A Fundamental Study Of Fatigue In Powder Metallurgy Aluminum Alloys

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A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys

Author : M. J. Koczak
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys by : M. J. Koczak

Download or read book A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys written by M. J. Koczak and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue response in high strength powder metallurgy aluminum alloys is being evaluated; the primary objective is to establish and understand processing-microstructure-fatigue integrity relationships. The program includes stress-controlled low and high cycle response and a determination of crack propagation rates in both air and saline environments. In scope, there are two concurrent phases of research; in one, the combined effects of powder processing mode and cobalt level (0, 0.4, 0.8%) on fatigue are examined while in the other, cobalt level is kept constant (0.4%) but the powder alloy is processed to give differing but known/controlled levels of deformation (material flow) by forging. S-N curves for axial fatigue (R equal to 0.1) in air reveal a strong influence of processing mode on life in alloys containing cobalt. Anisotropy in fatigue response is observed for each condition of cobalt level and processing mode examined; the degree of anisotropy is a function of processing mode if cobalt is present.

Fatigue of Sintered Materials

Author : Srečko Glodež
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1527570304
Total Pages : 188 pages
Book Rating : 4.5/5 (275 download)

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Book Synopsis Fatigue of Sintered Materials by : Srečko Glodež

Download or read book Fatigue of Sintered Materials written by Srečko Glodež and published by Cambridge Scholars Publishing. This book was released on 2021-05-26 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder Metallurgy (PM) is a general term which represents all techniques to produce solid-metal-based products from powders. PM (sintered) components are used widely in the engineering practice, particularly in the automotive industry. When determining the load capacity of dynamically loaded machine parts and structures made of sintered materials, the fatigue behaviour of critical areas should be considered, including crack initiation and the crack propagation period. In this book, the theoretical background of both PM-technology for producing sintered parts and the fatigue phenomenon of dynamically loaded components are described in detail. In the application part, some aspects of the Fe- and Al-powder morphology and its influence on the basic characteristics of sintered products are analysed, before the fatigue behaviour of diffusion alloyed Cu-Ni-Mo sintered steel is presented, considering the additional heat treatment effects on the fatigue strength. Furthermore, the fatigue analysis of sintered gears is also investigated. In that respect, this book represents a significant contribution to the database of the fatigue phenomenon of sintered machine parts and structural components.

Fatigue of High Strength Powder Metallurgy Aluminum Alloy

Author : Mario Rafalin
Publisher :
ISBN 13 :
Total Pages : 468 pages
Book Rating : 4.:/5 (782 download)

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Book Synopsis Fatigue of High Strength Powder Metallurgy Aluminum Alloy by : Mario Rafalin

Download or read book Fatigue of High Strength Powder Metallurgy Aluminum Alloy written by Mario Rafalin and published by . This book was released on 1981 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Constant Amplitude Fatigue Study of an Aluminum Powder Metallurgy Alloy

Author : JS. Santner
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis A Constant Amplitude Fatigue Study of an Aluminum Powder Metallurgy Alloy by : JS. Santner

Download or read book A Constant Amplitude Fatigue Study of an Aluminum Powder Metallurgy Alloy written by JS. Santner and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three test conditions were chosen to conduct multiple constant amplitude fatigue tests on a powder metallurgy (P/M) aluminum alloy. These test conditions were chosen to produce mean target fatigue lives near 1, 50, and 200 kilocycles. A statistical rule was used to select specimens for fractographic examination. Two product forms, a forging and an extrusion, were tested in both the L and L-T orientation. The forging has approximately an 8% lower yield strength and a 20% higher reduction in area than the extrusion. At the 1-kilocycle target fatigue life, the more ductile forging has a statistically better fatigue performance. Beyond 10 kilocycles, the higher strength extrusion appears to have a longer life, although this was not statistically verified. It is suspected this is because of the increased variance at these longer fatigue lives. Further testing is required to verify this point. Additional testing of the extrusion showed that if the data are fitted to a Weibull model, the P/M extrusion has a vastly different failure rate than reported for ingot metallurgy (I/M) products. A decreasing failure rate for the P/M extrusion was verified with a nonparametric test. The difference in failure rates may be related to the finer grain size and constituent particle size found in P/M aluminum products. Additional study is needed to verify this hypothesis.

High-strength Powder Metallurgy Aluminum Alloys

Author : Michael J. Koczak
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.:/5 (44 download)

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Book Synopsis High-strength Powder Metallurgy Aluminum Alloys by : Michael J. Koczak

Download or read book High-strength Powder Metallurgy Aluminum Alloys written by Michael J. Koczak and published by . This book was released on 1982 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1028 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Mechanisms of Corrosion Fatigue in High Strength I/M (Ingot Metallurgy) and P/M (Powder Metallurgy) Aluminum Alloys

Author : R. P. Wei
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Mechanisms of Corrosion Fatigue in High Strength I/M (Ingot Metallurgy) and P/M (Powder Metallurgy) Aluminum Alloys by : R. P. Wei

Download or read book Mechanisms of Corrosion Fatigue in High Strength I/M (Ingot Metallurgy) and P/M (Powder Metallurgy) Aluminum Alloys written by R. P. Wei and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: High strength aluminum alloys are employed extensively in the primary structure of current and projected Air Force and civilian aircraft. The service lives and reliability of these aircrafts depend to a great extent on the corrosion fatigue resistance of the structure alloys. Significant efforts are underway to develop powder metallurgy (P/M) alloys that would provide improved corrosion fatigue resistance along with improvements in other mechanical properties. The objective of this study is to understand the chemical and metallurgical aspects of environmental assisted fatigue crack growth (or corrosion fatigue) that can serve (1) as a basis for guiding the development of new and improved alloys, and (2) as a basis for developing rational design procedures for service life predictions. A coordinated fracture mechanics, surface chemistry and materials science approach is used. The research is being performed by Lehigh University with technical support by McDonnell Douglas Research Laboratories. (Author).

Technical Abstract Bulletin

Author :
Publisher :
ISBN 13 :
Total Pages : 1048 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Technical Abstract Bulletin by :

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Fatigue of Powder Metallurgy Alloys

Author : A. J. McEvily
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis The Fatigue of Powder Metallurgy Alloys by : A. J. McEvily

Download or read book The Fatigue of Powder Metallurgy Alloys written by A. J. McEvily and published by . This book was released on 1984 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental work on the fatigue crack growth characteristics of high strength P/M (Powder Metallurgy) aluminum alloys has been extended, with particular attention given to crack closure in the near threshold region as a function of R. It has been conclusively shown that the R-dependence of the threshold level is directly related to closure. In the absence of closure as in ultra-fine grained material the threshold level is independent of the R-ratio. Experimental work has been initiated on the growth of fatigue cracks under variable amplitude loading conditions. An approach to deal with topics such as the anomalous growth of short cracks, the non-propagation of cracks from notches, fatigue notch sensitivity, and the notch size-effect in fatigue has been developed. A comparison of the fatigue behavior of powder metallurgy and ingot metallurgy products has been initiated. Thus far out work indicates that P/M products can be produced which are free from manufacturing defects which might degrade fatigue properties of these high strength aluminum alloys. The fatigue properties are responsive to grain size, fracture toughness, and the degree of closure developed.

Environmental Corrosion-fatigue Behavior of Aluminum Alloys

Author : D. N. Williams
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Environmental Corrosion-fatigue Behavior of Aluminum Alloys by : D. N. Williams

Download or read book Environmental Corrosion-fatigue Behavior of Aluminum Alloys written by D. N. Williams and published by . This book was released on 1970 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of environment on fatigue behavior are quite intimately related to such test variables as stress intensity, cyclic frequency, and temperature. The effect of these variables has been shown to be quite complex. However, a consistent pattern of behavior is beginning to emerge which, it is hoped, will lead to a considerably changed understanding of the corrosion-fatigue process. It is considered probable that an increased understanding of the corrosion-fatigue process will also contribute measureably to an improved understanding of general fatigue processes. Material variables such as composition, directionality of properties, and microstructure, have important effects on corrosion-fatigue behavior of aluminum alloys. However, it appears that these variables, at least in gaseous environments, may be important largely because of their effects on the mechanical behavior of aluminum alloys. On the other hand, studies in seawater suggest that these variables become increasingly important as the corrosive nature of the environment increases. This memorandum discusses in detail the effects of both test variables and material variables on corrosion fatigue. In addition, current theories of corrosion-fatigue mechanisms are outlined, and several methods of preventing corrosion fatigue are suggested. (Author).

Fatigue of Metals

Author : P. G. Forrest
Publisher : Elsevier
ISBN 13 : 1483160734
Total Pages : 436 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Fatigue of Metals by : P. G. Forrest

Download or read book Fatigue of Metals written by P. G. Forrest and published by Elsevier. This book was released on 2013-10-22 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue of Metals provides a general account of the failure of metals due to fatigue, a subject of great practical importance in the field of engineering and metallurgy. The book covers a wide range of topics on the study of the fatigue of metals. The text presents in the first three chapters the characteristics and detection of fatigue fractures; methods of fatigue testing; and the fatigue strengths of different materials. The resistance of materials to fatigue under complex stress; the determination and effects of stress concentration; influence of surface treatment on fatigue strength; and effects of corrosion and temperature are also studied in detail. In relation to the previous chapters of fatigue information, a chapter is devoted to engineering design to prevent fatigue. The last two chapters provide a brief historical survey of the developments of the study of the mechanism of fatigue and fatigue of non-metallic materials such as wood, plastic, rubber, glass, and concrete. Mechanical engineers, designers, metallurgists, researchers, and students will find the book as a good reference material.

Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781724083333
Total Pages : 26 pages
Book Rating : 4.0/5 (833 download)

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Book Synopsis Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy by : National Aeronautics and Space Adm Nasa

Download or read book Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-27 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue crack growth (FCG) research conducted in the near threshold regime has identified a room temperature creep crack growth damage mechanism for a fine grain powder metallurgy (PM) aluminum alloy (8009). At very low DK, an abrupt acceleration in room temperature FCG rate occurs at high stress ratio (R = Kmin/Kmax). The near threshold accelerated FCG rates are exacerbated by increased levels of Kmax (Kmax less than 0.4 KIC). Detailed fractographic analysis correlates accelerated FCG with the formation of crack-tip process zone micro-void damage. Experimental results show that the near threshold and Kmax influenced accelerated crack growth is time and temperature dependent. Piascik, Robert S. and Newman, John A. Langley Research Center NASA/TM-2002-211676, L-18180, NAS 1.15:211676, ARL-TR-2728

A Study of Spectrum Fatigue Crack Propagation in Two Aluminum Alloys. 2: Influence of Microstructures

Author : Jack Telesman
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis A Study of Spectrum Fatigue Crack Propagation in Two Aluminum Alloys. 2: Influence of Microstructures by : Jack Telesman

Download or read book A Study of Spectrum Fatigue Crack Propagation in Two Aluminum Alloys. 2: Influence of Microstructures written by Jack Telesman and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy

Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy by :

Download or read book Accelerated Near-Threshold Fatigue Crack Growth Behavior of an Aluminum Powder Metallurgy Alloy written by and published by . This book was released on 2002 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Titanium Powder Metallurgy

Author : Ma Qian
Publisher : Butterworth-Heinemann
ISBN 13 : 0128009101
Total Pages : 649 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Titanium Powder Metallurgy by : Ma Qian

Download or read book Titanium Powder Metallurgy written by Ma Qian and published by Butterworth-Heinemann. This book was released on 2015-02-10 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium Powder Metallurgy contains the most comprehensive and authoritative information for, and understanding of, all key issues of titanium powder metallurgy (Ti PM). It summarizes the past, reviews the present and discusses the future of the science and technology of Ti PM while providing the world titanium community with a unique and comprehensive book covering all important aspects of titanium powder metallurgy, including powder production, powder processing, green shape formation, consolidation, property evaluation, current industrial applications and future developments. It documents the fundamental understanding and technological developments achieved since 1937 and demonstrates why powder metallurgy now offers a cost-effective approach to the near net or net shape fabrication of titanium, titanium alloys and titanium metal matrix composites for a wide variety of industrial applications. Provides a comprehensive and in-depth treatment of the science, technology and industrial practice of titanium powder metallurgy Each chapter is delivered by the most knowledgeable expert on the topic, half from industry and half from academia, including several pioneers in the field, representing our current knowledge base of Ti PM. Includes a critical review of the current key fundamental and technical issues of Ti PM. Fills a critical knowledge gap in powder metal science and engineering and in the manufacture of titanium metal and alloys

Study on Effects of Powder and Flake Chemistry and Morphology on the Properties of Al-Cu-Mg-X-X-X Powder Metallurgy Advanced Aluminum Alloys

Download Study on Effects of Powder and Flake Chemistry and Morphology on the Properties of Al-Cu-Mg-X-X-X Powder Metallurgy Advanced Aluminum Alloys PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Study on Effects of Powder and Flake Chemistry and Morphology on the Properties of Al-Cu-Mg-X-X-X Powder Metallurgy Advanced Aluminum Alloys by :

Download or read book Study on Effects of Powder and Flake Chemistry and Morphology on the Properties of Al-Cu-Mg-X-X-X Powder Metallurgy Advanced Aluminum Alloys written by and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advancements in Powder Metallurgy: Processing, Applications, and Properties

Author : Rajendrachari, Shashanka
Publisher : IGI Global
ISBN 13 : 166849387X
Total Pages : 329 pages
Book Rating : 4.6/5 (684 download)

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Book Synopsis Advancements in Powder Metallurgy: Processing, Applications, and Properties by : Rajendrachari, Shashanka

Download or read book Advancements in Powder Metallurgy: Processing, Applications, and Properties written by Rajendrachari, Shashanka and published by IGI Global. This book was released on 2024-02-27 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advancements in Powder Metallurgy: Processing, Applications, and Properties addresses a critical issue in academic scholarship by providing a comprehensive resource that has been lacking in the field. Existing books often fall short by merely covering the basics of powder preparation, sintering methods, and general applications, leaving scholars with a limited understanding of the subject. This knowledge gap has hindered innovative research and slowed the progress of metallurgy and mechanical engineering. However, with this groundbreaking book, the tide is turning. The book brings together twenty-one chapters authored by renowned pioneers in the field, delving deep into the realm of mechanical alloying. It covers the evolution of this technique, various alloy preparation methods, their advantages and limitations, and the synthesis of nanostructured materials. Unlike other resources, this volume goes beyond the basics and comprehensively covers the fabrication of a wide range of alloys, including biomaterials, hybrid nanomaterials, smart materials, super alloys, and ceramic materials, all achieved through the transformative process of mechanical alloying. By consolidating essential information in one resource, Advancements in Powder Metallurgy: Processing, Applications, and Properties fills a significant gap in the existing literature. It equips academic scholars and engineering students with the necessary knowledge to unlock the full potential of mechanical alloying and make meaningful contributions to the field. With its emphasis on simplicity and accessibility, this book promises to inspire a new wave of research, reignite interest in metallurgy and mechanical engineering, and empower scholars to explore novel applications and contribute to the advancements in this field.