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Fracture Resistance Of Aluminum Alloys
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Book Synopsis Fracture Resistance of Aluminum Alloys by : John Gilbert Kaufman
Download or read book Fracture Resistance of Aluminum Alloys written by John Gilbert Kaufman and published by ASM International. This book was released on 2001-01-01 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Kaufman prevents this summary of data on the fracture characteristics of aluminum alloys, broadly based on a publication by Alcoa in 1964, Fracture Characteristics of Aluminum Alloys. Coverage includes tensile properties as indicators of fracture behavior; notched-bar impact and related tests for toughness; notch toughness and sensitivity; tear resistance; fracture toughness; the interrelation of fracture characteristics; toughness at subzero and elevated temperatures; subcritical crack growth; and metallurgical considerations in fracture resistance. Most of the data is presented in only the English/engineering units, contrary to normal ASM International and Aluminum Association, Inc. policies. The author's credentials are not stated. c. Book News Inc
Book Synopsis Influencing Parameters on the Fracture Resistance of Aluminum Alloys by : Joseph Sigmund Wycech
Download or read book Influencing Parameters on the Fracture Resistance of Aluminum Alloys written by Joseph Sigmund Wycech and published by . This book was released on 1971 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Purchase Expectations for Fracture Resistance of 7000-series Aluminum Airframe Alloys by : William E. Anderson
Download or read book Design and Purchase Expectations for Fracture Resistance of 7000-series Aluminum Airframe Alloys written by William E. Anderson and published by . This book was released on 1974 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: When an airframe component breaks suddenly, under conditions well within the design envelope, the occurrence is usually termed brittle fracture. This report uses an analytical scheme which combines data from several different sources in order to provide diagrams of fracture resistance versus thickness for a number of 'standard' yield strength levels. By using such diagrams, limited data on a new alloy or heat treatment may be compared, and the impact on designs where fracture resistance is important may be assessed. The data background employed in the analysis consisted of both iron- and aluminum-base airframe materials. However, this report focuses largely on the 7000-series aluminum alloys. Minimum expected behavior has been developed for this series of aluminum alloys by examining fracture toughness, yield strength, and thickness effect in accordance with the analytical scheme described.
Book Synopsis The Significance of Material Ductility to the Fracture Resistance of Steel and Aluminum Alloys by : Karl Sieradzki
Download or read book The Significance of Material Ductility to the Fracture Resistance of Steel and Aluminum Alloys written by Karl Sieradzki and published by . This book was released on 1976 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aluminum-Lithium Alloys by : S.P. Lynch
Download or read book Aluminum-Lithium Alloys written by S.P. Lynch and published by Elsevier Inc. Chapters. This book was released on 2013-09-20 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminium-Lithium (Al–Li) alloys have been of interest since the 1950s when they were first used on a military aircraft. Having lithium as the main alloying element in Al alloys is attractive since (i) each 1 wt% Li reduces the density by ~3% and increases modulus by ~5%, and (ii) high strengths can be achieved by precipitation-hardening. During the 1980s, extensive research and development was carried out on alloys with high lithium contents (>2 wt%≡~8 at%) such as AA 8090 (Al 2.4 Li 1.2 Cu 0.7 Mg 0.12 Zr) (wt%). The mechanical properties of these ‘second-generation’ Al–Li alloys, however, did not match those of conventional Al (-Zn)-Mg-Cu alloys, and the lower fracture toughness of these alloys (for equivalent strengths was a particular problem. Thus, 2nd generation Al–Li alloys did not see widespread use. The experience with 2nd generation Al–Li alloys led to the development of ‘3rd generation’ alloys with lower Li contents (0.75–1.7 wt%), and some of these alloys have a better overall balance of properties, including fracture toughness, than the best available conventional Al alloys. These 3rd generation Al–Li alloys should therefore see extensive use in future civil and military aircraft. This chapter on fracture toughness and fracture modes of aerospace Al–Li alloys outlines why fracture toughness is important for aerospace structures and components, and summarises testing procedures and terminologies in regard to plane-strain and plane-stress fracture toughness. The relationships between fracture toughness/fracture modes and microstructural features such as grain morphology, constituent particles, impurity phases, matrix precipitates, grain-boundary precipitates, and grain boundary segregation, are then discussed. Proposed explanations for the low fracture toughness of 2nd generation Al–Li alloys, associated with low-energy intergranular and transgranular shear fractures, are discussed in some depth, followed by a summary of the alloy-design principles behind the development of 3rd generation Al–Li alloys with a much improved resistance to low-energy fracture modes. Quantitative data for fracture toughness of 2nd and 3rd generation Al–Li alloys in comparison with conventional Al alloys are provided, showing that 3rd generation Al–Li alloys have outstanding combinations of toughness and strength combined with reduced densities. The superior toughness of 3rd generation Al–Li alloys compared with 2nd generation alloys is reflected in the differences in fracture-surface topography and fracture path. The chapter concludes with a summary of the current and proposed uses of 3rd generation Al–Li alloys in aircraft structures and components
Book Synopsis The Microstructure and Plane Strain Fracture Toughness of High Strength Aluminum Alloys by : Peter John Guest
Download or read book The Microstructure and Plane Strain Fracture Toughness of High Strength Aluminum Alloys written by Peter John Guest and published by . This book was released on 1967 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elevated Temperature Effects on Fatigue and Fracture by : Robert S. Piascik
Download or read book Elevated Temperature Effects on Fatigue and Fracture written by Robert S. Piascik and published by ASTM International. This book was released on 1997 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture Extension Resistance of Aluminum Alloys in Thin Sections by : Ralph W. Judy
Download or read book Fracture Extension Resistance of Aluminum Alloys in Thin Sections written by Ralph W. Judy and published by . This book was released on 1973 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dynamic Tear (DT) test was developed to characterize the fracture resistance properties of structural metals over the entire range of strength and fracture properties. Ratio Analysis Diagram (RAD) procedures based on use of the DT test have been developed as a framework for determining the significance of fracture resistance data in terms of structural design papameters. However, DT test methods have been used primarily for thick-section materials (1.0 in. and thicker); hence no standard method for measuring fracture properties of thin-section ductile materials presently exists. This report is concerned with the extension of DT test methods to include thin-section materials in the RAD analysis system. The test materials were four thin-section aluminum alloys. A technique of laminating specimens was developed to prevent specimen buckling. Methods for comparing thin-section material properties to previously established data for aluminum alloys in thicker sections on the RAD format are also discussed. (Author).
Book Synopsis Crack Resistance Properties of High Strength Aluminum Alloys by : Carl M. Carman
Download or read book Crack Resistance Properties of High Strength Aluminum Alloys written by Carl M. Carman and published by . This book was released on 1965 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fracture toughness of both commercial and high purity aluminum alloys of the 7000 and 2000 series was determined by means of the center notched sheet specimen. The instability conditions described here give reproducible and well defined values of fracture toughness. For the very high strength aluminum alloys, the four inch wide specimen is sufficiently large to give accurate values of fracture toughness. Both the compliance and photographic method give the same value of fracture toughness, provided the proper experimental conditions are met. The testing conditions for the 2000 series of aluminum alloys do not conform to the normal requirements for simple fracture mechanics analysis, but the data may be analyzed within the framework of a refined instability model. The fracture toughness of the 2000 series of aluminum alloys is greater than the fracture toughness of the 7000 series. Reduction of iron and silicon contents results in an upgrading of the fracture toughness for both 7075-T6 and 2024-T4 aluminum alloys. Quantitative fractography gives some insight into the mechanisms which may be responsible for the upgrading of the fracture toughness. (Author).
Book Synopsis Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys by : Benjamin Floyd Brown
Download or read book Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys written by Benjamin Floyd Brown and published by . This book was released on 1972 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study on the Fracture Toughness of Aluminum Alloys by : Jamil Mohamad Sabri Jarrah
Download or read book A Study on the Fracture Toughness of Aluminum Alloys written by Jamil Mohamad Sabri Jarrah and published by . This book was released on 1991 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aluminum-Lithium Alloys by : N Eswara Prasad
Download or read book Aluminum-Lithium Alloys written by N Eswara Prasad and published by Butterworth-Heinemann. This book was released on 2013-09-20 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because lithium is the least dense elemental metal, materials scientists and engineers have been working for decades to develop a commercially viable aluminum-lithium (Al-Li) alloy that would be even lighter and stiffer than other aluminum alloys. The first two generations of Al-Li alloys tended to suffer from several problems, including poor ductility and fracture toughness; unreliable properties, fatigue and fracture resistance; and unreliable corrosion resistance. Now, new third generation Al-Li alloys with significantly reduced lithium content and other improvements are promising a revival for Al-Li applications in modern aircraft and aerospace vehicles. Over the last few years, these newer Al-Li alloys have attracted increasing global interest for widespread applications in the aerospace industry largely because of soaring fuel costs and the development of a new generation of civil and military aircraft. This contributed book, featuring many of the top researchers in the field, is the first up-to-date international reference for Al-Li material research, alloy development, structural design and aerospace systems engineering. - Provides a complete treatment of the new generation of low-density AL-Li alloys, including microstructure, mechanical behavoir, processing and applications - Covers the history of earlier generation AL-Li alloys, their basic problems, why they were never widely used, and why the new third generation Al-Li alloys could eventually replace not only traditional aluminum alloys but more expensive composite materials - Contains two full chapters devoted to applications in the aircraft and aerospace fields, where the lighter, stronger Al-Li alloys mean better performing, more fuel-efficient aircraft
Book Synopsis Processing and properties of advanced aluminum alloys by : John A. Wert
Download or read book Processing and properties of advanced aluminum alloys written by John A. Wert and published by . This book was released on 1989 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project has as its focus microstructure control for improving fracture resistance of advanced aluminum alloys. Our progress report is divided into two major parts: Part I which is concerned with the quench sensitivity of the Al-Li-Cu-Mg alloy 2090 and the effect of quench rate on fracture behavior, and Part II which is concerned with the recovery and recrystallization mechanisms that occur in an alloy having a high density of dispersoid particles. The grain size of aluminum alloys can affect both strength and deformation behavior and often controls the degree of superplasticity during elevated temperature deformation. (jes).
Book Synopsis Fracture Toughness of Aluminum Alloys Under Corrosive Conditions by : William Edwin Wood
Download or read book Fracture Toughness of Aluminum Alloys Under Corrosive Conditions written by William Edwin Wood and published by . This book was released on 1970 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow and Fracture Properties of Aluminum Alloys Potentially Useful for Small Arms Cartridge Cases by : E. J. Ripling
Download or read book Flow and Fracture Properties of Aluminum Alloys Potentially Useful for Small Arms Cartridge Cases written by E. J. Ripling and published by . This book was released on 1973 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most useful laboratory measure for evaluating fracture resistance is the fracture toughness which must also be measured at the rates and temperatures that simulate service. Since cartridge case materials are very thin, fracturing occurs under a condition of plane stress rather than plane strain. Measurements of dynamic yield strength have been made by numerous investigators. Dynamic measurements of plane stress fracture toughness, on the other hand, have not been made prior to this program. Consequently, it was necessary to develop a method for measuring this property on thin sheets in a fashion such that dynamic loading would be possible. Tensile and fracture toughness tests of each material were made at rise times (time required to increase the load from zero to its critical value). The critical value of load was the 0.2 percent offset yield stress for tensile testing, and the plateau (or equilibrium) value of the critical stress intensity factor for toughness testing. All of the alloys were tested in the longitudinal and the long transverse direction, and early in the program tests were also made for each rate and direction at test temperatures of -70, +70 and +165F.
Book Synopsis Aluminum Alloy Castings by : John Gilbert Kaufman
Download or read book Aluminum Alloy Castings written by John Gilbert Kaufman and published by ASM International. This book was released on 2004-01-01 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: J. G. (Gil) Kaufman is currently president of his consulting company, Kaufman Associates.
Book Synopsis Tension Properties of Aluminum Alloys in the Presence of Stress-raisers by : A. W. Dana
Download or read book Tension Properties of Aluminum Alloys in the Presence of Stress-raisers written by A. W. Dana and published by . This book was released on 1949 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of circumferential notches on the fracturing characteristics of 24S-T aluminum-alloy tensile test bars were investigated. Two variations in notch contour, namely, notch radius and notch depth, were studied. In addtion, two different surface conditions. were investigated.
