The Fatigue Of Powder Metallurgy Alloys

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The Fatigue of Powder Metallurgy Alloys

Author : A. J. McEvily
Publisher :
ISBN 13 :
Total Pages : 61 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 1985 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the important conditions in qualifying high strength powder metallurgy alloys is their resistance to fatigue crack propagation. The results of the present investigation indicate that the fatigue crack propagation resistance of high strength P/M aluminum alloys is equivalent to that of a comparable ingot metallurgy alloy in the near-threshold region. The ingot alloy exhibits a slightly lower crack growth rate in the intermediate region. However the higher strength of the P/M alloys (550 MPa YS, 600 MPa UTS) as compared to the ingot alloy (450 MPa, 550 MPa) results in a reduction of fracture toughness with the result that the crack growth rates at high (Delta) k levels are higher in the P/M alloys. If exactly equivalent tensile properties were present in both P/M and I/M materials perhaps this difference would not occur since nothing characterizable as a defect was found in the P/M alloys. A procedure for the analysis of the growth of short cracks from notches based upon crack closure considerations has also been formulated. Short crack behavior is important in establishing inspection intervals in retirement for cause applications, for example. The rate and extent at which crack closure develops in the wake of a newly formed crack can be used not only in the treatment of short crack behavior, but also to account for the notch size effect in fatigue as well as for fatigue notch sensitivity.

Advances in powder metallurgy

Author : N. Chawla
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128088680
Total Pages : 52 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Advances in powder metallurgy by : N. Chawla

Download or read book Advances in powder metallurgy written by N. Chawla and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sintered ferrous powder metallurgy (PM) components are replacing wrought alloys in many applications, owing to their low cost, high performance and ability to be processed to near-net shape. The fracture and fatigue behavior of these materials is very important. In this chapter the microstructure, tensile and fatigue behavior of sintered steels is reviewed.

A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys

Author : A. Lawley
Publisher :
ISBN 13 :
Total Pages : 93 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys by : A. Lawley

Download or read book A Fundamental Study of Fatigue in Powder Metallurgy Aluminum Alloys written by A. Lawley and published by . This book was released on 1981 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processing-microstructure-fatigue relationships have been examined in high-strength powder metallurgy aluminum alloys (Al-Cu, Mg, Zn, Co) in air and salt fog. Three phases were included: (i) The combined effects of cobalt level and processing mode on fatigue life and resistance to crack propagation; (ii) The role of plane-strain forging on fatigue life and crack propagation response; (iii) The combined effects of cobalt level and processing mode on strain-controlled low-cycle fatigue. While the interplay between processing history, alloy composition and orientation is complex, a basic understanding of the role of microstructure on the crack initiation and propagation stages of fatigue has been obtained. Direct comparisons of the corresponding fatigue response of counterpart ingot metallurgy alloys were included. In general, the P/M processed material exhibits superior resistance to fatigue crack initiation compared to the I/M form. However the relative crack growth rates in the P/M and to the I/M form. However the relative crack growth rates in the P/M and I/M materials depend on orientation and the level of delta K. (Author).

Powder Metallurgy in Design

Author : PEP (Professional Engineering Publishers)
Publisher : John Wiley & Sons
ISBN 13 : 1860583032
Total Pages : 100 pages
Book Rating : 4.8/5 (65 download)

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Book Synopsis Powder Metallurgy in Design by : PEP (Professional Engineering Publishers)

Download or read book Powder Metallurgy in Design written by PEP (Professional Engineering Publishers) and published by John Wiley & Sons. This book was released on 2000-06-08 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standardized processing routes for PM fabrication Powder Metallurgy in Design: Wear, Corrosion and Fatigue Resistance is an essential resource for anyone in the field. Powder metallurgy allows engineers to control the microstructure of the metal, resulting in materials more suitable for the fabrication of unique parts with unique properties — yet the process of formulating these metals is itself unique. This book standardizes and codifies the necessary processing routes, and helps engineers incorporate the potential of these products into the design stage of a project.

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

Powder Metallurgy of Superalloys

Author : G. H. Gessinger
Publisher : Elsevier
ISBN 13 : 148319244X
Total Pages : 363 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Powder Metallurgy of Superalloys by : G. H. Gessinger

Download or read book Powder Metallurgy of Superalloys written by G. H. Gessinger and published by Elsevier. This book was released on 2013-10-22 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder Metallurgy of Superalloys details the advancement of powder metallurgy in the context of producing superalloys. The book is comprised of nine chapters that cover the underlying principles of superalloys produced through powder metallurgy. The text first covers concerns in pre-alloyed dispersion-free powders, such as powder production and characterization; powder consolidation methods; and quality control and non-destructive evaluation of P/M superalloys. The next chapter talks about oxide-dispersion-strengthened superalloys. Next, the book discusses joining techniques for P/M superalloys and the practical applications of P/M superalloys. The title will be of great use to professionals in the materials manufacturing industry.

Powder Metallurgy Technology

Author : G. S. Upadhyaya
Publisher : Cambridge Int Science Publishing
ISBN 13 : 1898326401
Total Pages : 174 pages
Book Rating : 4.8/5 (983 download)

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Book Synopsis Powder Metallurgy Technology by : G. S. Upadhyaya

Download or read book Powder Metallurgy Technology written by G. S. Upadhyaya and published by Cambridge Int Science Publishing. This book was released on 1997 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Contents1 INTRODUCTION; 2 METAL POWDER PRODUCTION; 3 METAL POWDER CHARACTERISTICS; 4 METAL POWDER TRE-AMENT; 5 METAL POWDER COMPACT-ION; 6 SINTERING; 7 HOT CONSOLIDATION; 8 SECONDARY TREATMENT; 9 POWDER INJECTION MOULDING; 10 QUALITY CONTROL OF POWDER METALLURGY MATERIALS.

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:

Low Density, High Temperature Powder Metallurgy Alloys

Author : William E. Frazier
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.:/5 (38 download)

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Book Synopsis Low Density, High Temperature Powder Metallurgy Alloys by : William E. Frazier

Download or read book Low Density, High Temperature Powder Metallurgy Alloys written by William E. Frazier and published by . This book was released on 1991 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the powder metallurgy process of making high-temperature, low-density, high-performance alloys, particularly for use in the aerospace industry. The 16 papers, from a symposium in Detroit, October 1990, consider powder metallurgy alloy design, intermetallic alloys, metallic and intermetalli

Advances in powder metallurgy

Author : H. Danninger
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128088591
Total Pages : 71 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Advances in powder metallurgy by : H. Danninger

Download or read book Advances in powder metallurgy written by H. Danninger and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferrous powder metallurgy (PM) makes up the majority of powder metallurgy products with regard to tonnage. Improving performance is the main trend for pressed and sintered parts, in particular the introduction of cost-effective alloy elements such as Cr and Mn. Furthermore, much can be gained in ferrous PM by elaborate secondary operations. In metal injection moulding (MIM) products, there is a clear trend towards increasingly complex shapes and microsized parts. PM tool steels offer a much finer and fully isotropic microstructure compared to their wrought counterparts and the carbide content may be much higher, resulting in excellent application properties.

Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720

Author :
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720 by :

Download or read book Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720 written by and published by . This book was released on 2000 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721203802
Total Pages : 40 pages
Book Rating : 4.2/5 (38 download)

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Book Synopsis Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720 by : National Aeronautics and Space Administration (NASA)

Download or read book Assessment of Low Cycle Fatigue Behavior of Powder Metallurgy Alloy U720 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-16 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue lives of modem powder metallurgy disk alloys are influenced by variabilities in alloy microstructure and mechanical properties. These properties can vary as functions of variables the different steps of materials/component processing: powder atomization, consolidation, extrusion, forging, heat treating, and machining. It is important to understand the relationship between the statistical variations in life and these variables, as well as the change in life distribution due to changes in fatigue loading conditions. The objective of this study was to investigate these relationships in a nickel-base disk superalloy, U720, produced using powder metallurgy processing. Multiple strain-controlled fatigue tests were performed at 538 C (1000 F) at limited sets of test conditions. Analyses were performed to: (1) assess variations of microstructure, mechanical properties, and LCF failure initiation sites as functions of disk processing and loading conditions; and (2) compare mean and minimum fatigue life predictions using different approaches for modeling the data from assorted test conditions. Significant variations in life were observed as functions of the disk processing variables evaluated. However, the lives of all specimens could still be combined and modeled together. The failure initiation sites for tests performed at a strain ratio R(sub epsilon) = epsilon(sub min)/epsilon(sub max) of 0 were different from those in tests at a strain ratio of -1. An approach could still be applied to account for the differences in mean and maximum stresses and strains. This allowed the data in tests of various conditions to be combined for more robust statistical estimates of mean and minimum lives. Gabb, Tomothy P. and Bonacuse, Peter J. and Ghosn, Louis J. and Sweeney, Joseph W. and Chatterjee, Amit and Green, Kenneth A. Glenn Research Center NASA/TM-2000-209418, E-12061, NAS 1.15:209418

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:

Powder Metallurgy

Author : Erhard Klar
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Powder Metallurgy by : Erhard Klar

Download or read book Powder Metallurgy written by Erhard Klar and published by . This book was released on 1983 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Spectrum Fatigue Behaviour of Powder Metallurgy Aluminum Alloys

Author : G. V. Searich
Publisher :
ISBN 13 :
Total Pages : 275 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Spectrum Fatigue Behaviour of Powder Metallurgy Aluminum Alloys by : G. V. Searich

Download or read book Spectrum Fatigue Behaviour of Powder Metallurgy Aluminum Alloys written by G. V. Searich and published by . This book was released on 1991 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue crack growth behavior of three aluminum alloys was examined under constant amplitude and spectrum loading. The fatigue behavior of extrusions and hand forgings of second-generation powder metallurgy (PM) alloy CW67 (X7093) was compared to the fatigue behavior of extrusions of 7091 (a first-generation PM alloy) and 7075 (an ingot metallurgy alloy). Spectrum fatigue crack growth tests were performed using the FALSTAFF fighter spectrum as well as an actual fighter aircraft spectrum. Additionally, overload/underload fatigue crack growth tests were performed to correlate the constant amplitude and spectrum fatigue behaviors. For these tests, overload-induced crack jumps and crack growth retardation were measured. Tensile properties, fracture toughness, stress-life fatigue, and stress corrosion cracking were also evaluated. For the spectrum fatigue tests in particular, the crack growth behavior was correlated to the microstructure and fractography. In summary, the fine-grained PM alloys exhibited significantly higher strengths, toughness, and stress -life fatigue resistance than 7075, but markedly lower constant amplitude fatigue crack growth resistance. Under a tension-dominated FALSTAFF spectrum, PM alloys were generally inferior in crack growth resistance compared to IM alloys, which is consistent with constant amplitude fatigue behavior. However, in spectrums having more compressive loads, Fatigue, Fatigue Crack Growth, Spectrum Fatigue, Overload, FALSTAFF, Powder Metallurgy, Aluminum Alloys, CW67, X7093, 7091, 7075, Stress Corrosion, Fractography.

Fatigue Crack Initiation and Propagation in Ferrous Powder Metallurgy Alloys

Author : Steven J. Polasik
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis Fatigue Crack Initiation and Propagation in Ferrous Powder Metallurgy Alloys by : Steven J. Polasik

Download or read book Fatigue Crack Initiation and Propagation in Ferrous Powder Metallurgy Alloys written by Steven J. Polasik and published by . This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ferrous Powder Metallurgy

Author : Andrej Šalak
Publisher : Cambridge International Science Publishing
ISBN 13 :
Total Pages : 478 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Ferrous Powder Metallurgy by : Andrej Šalak

Download or read book Ferrous Powder Metallurgy written by Andrej Šalak and published by Cambridge International Science Publishing. This book was released on 1995 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the position of ferrous powder metallurgy, the author deals with the theoretical fundamentals and technical and technological aspects of the current state of knowledge in ferrous powder metallurgy so that special attention may be given to all factors influencing parts and materials with the required properties, form and dimensions, stressing their higher economic efficiency. The book also shows the extensive possibilities for further development of ferrous powder metallurgy and should therefore contribute to increasing the level of general and detailed knowledge of experts working in this area and should help in transition from fabrication of parts by conventional methods with all typical economic and ecological shortcomings to fabrication by powder metallurgy methods.