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Author : W. F. Gerhold
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (957 download)
Download or read book Test Methods for Evaluating the Stress Corrosion Behavior of Aluminum Alloys written by W. F. Gerhold and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. H. Haynie
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.3/5 (91 download)
Download or read book Stress-corrosion Cracking of Aluminum Alloys written by F. H. Haynie and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report deals with the stress-corrosion cracking of aluminum alloys, and it represents an effort by DMIC to expand on the information contained in DMIC Memorandum 202, 'Stress-Corrosion Cracking of Aluminum Alloys', dated February 15, 1965. DMIC Report 228 begins by presenting a comprehensive definition of stress-corrosion cracking. This is followed by sections dealing with (1) the historical development and growth in awareness of the problem, (2) the mechanisms involved, and (3) the theory of stress-corrosion cracking. A section on experimental techniques is presented. These techniques include test methods used to determine the susceptibility of alloys to stress-corrosion cracking, as well as more refined methods of studying the fundamental mechanisms of the problem. Different evaluation methods, applicable to obtaining the different objectives of stress-corrosion testing, are also presented. All of the foregoing serve as background to the sections on stress-corrosion-cracking behavior of aluminum alloys and preventive measures. (Author).
Author : Vinod S. Agarwala
Publisher : ASTM International
ISBN 13 : 0803114354
Total Pages : 227 pages
Book Rating : 4.8/5 (31 download)
Download or read book New Methods for Corrosion Testing of Aluminum Alloys written by Vinod S. Agarwala and published by ASTM International. This book was released on 1992 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluates the usefulness of the current standards on exfoliation and corrosion testing of aluminum alloys and their applicability to new requirements and advanced alloys. The 13 papers, from an international symposium in San Francisco, May 1990, discuss whether the existing standards should be revis
Author : JW. Coursen
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (125 download)
Download or read book Evaluating Stress-Corrosion Crack-Propagation Rates in High-Strength Aluminum Alloys with Bolt Loaded Precracked Double-Cantilever-Beam Specimens written by JW. Coursen and published by . This book was released on 1976 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Propagation rates for stress-corrosion cracking (SCC) of high-strength aluminum alloys determined with mechanically precracked double-cantilever-beam (DCB) specimens provide a quantitative means of comparing the resistance to SCC of alloys and tempers. For relatively resistant materials however, the rates can be markedly influenced by test conditions and interpretation of the crack-growth data. This paper describes a relatively simple, accelerated testing method for determining SCC velocities that rank the SCC behavior of aluminum alloys in the same order as SCC propagation rates in a seacoast or industrial atmosphere. Practical difficulties associated with this test method, however, warrant further evaluation to justify this as a primary method of testing.
Author : Joseph R. Davis
Publisher : ASM International
ISBN 13 : 1615030514
Total Pages : 228 pages
Book Rating : 4.6/5 (15 download)
Download or read book Corrosion of Weldments written by Joseph R. Davis and published by ASM International. This book was released on 2006-01-01 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion failures of industrial components are commonly associated with welding. The reasons are many and varied. For example, welding may reduce the resistance to corrosion and environmentally assisted cracking by altering composition and microstructure, modifying mechanical properties, introducing residual stress, and creating physical defects. This book details the many forms of weld corrosion and the methods used to minimize weld corrosion. Chapters on specific alloys groups--carbon and alloy steels, stainless steels, high-nickel alloys, and nonferrous alloys--describe both general welding characteristics and the metallurgical factors that influence corrosion behavior. Corrosion problems associated with dissimilar metal weldments are also examined. Case histories document corrosion problems unique to specific industries including oil and gas, chemical processing, pulp and paper, and electric power. Special challenges caused by high-temperature environments are discussed. Commonly used methods to monitor weld corrosion and test methods for evaluation of intergranular, pitting, crevice, stress-corrosion cracking, and other forms of corrosion are also reviewed.
Author : Joseph R. Davis
Publisher : ASM International
ISBN 13 : 9781615032389
Total Pages : 338 pages
Book Rating : 4.0/5 (323 download)
Download or read book Corrosion of Aluminum and Aluminum Alloys written by Joseph R. Davis and published by ASM International. This book was released on 1999-01-01 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : American Society for Testing and Materials
Publisher : New York : J. Wiley
ISBN 13 :
Total Pages : 904 pages
Book Rating : 4.3/5 (91 download)
Download or read book Handbook on Corrosion Testing and Evaluation written by American Society for Testing and Materials and published by New York : J. Wiley. This book was released on 1971 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : HB. Romans
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (125 download)
Download or read book Atmospheric Stress Corrosion Testing of Aluminum Alloys written by HB. Romans and published by . This book was released on 1968 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are given for stress corrosion studies carried out on a number of aluminum alloys. Testing was done at Aruba, Netherlands Antilles, Kure Beach, N. C., and Richmond, Va. These sites provided environments that ranged from tropical marine to mild industrial. Failure times are compared with laboratory and service results. One aim was to study the effect of prolonged aging at ambient temperatures. In aluminum-magnesium alloys this aging may produce a metallurgical structure which makes these alloys subject to stress corrosion cracking. Specimens aged at higher temperatures do show this response in laboratory and atmospheric tests. From these accelerated data, Arrhenius plots predict these alloys should become susceptible within two to five years if aged at ambient temperatures. However, test results do not bear this out. It is possible to draw erroneous conclusions from only one type of test. For at least one alloy, the rate of failure is much more rapid in the atmosphere than in an accelerated laboratory test. This has been attributed to an interaction between specimens tested in a communal solution. In conclusion, either a laboratory or an atmospheric test is, in itself, insufficient to characterize the stress corrosion behavior of an engineering material. These two tests give data that are complimentary instead of supplementary. Both types are necessary to evaluate the potential hazards of a material having some degree of stress corrosion susceptibility.
Author : EH. Gillespie
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (125 download)
Download or read book Slow Strain-Rate Stress Corrosion Testing of Aluminum Alloys written by EH. Gillespie and published by . This book was released on 1979 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of the slow strain-rate stress corrosion technique for testing aluminum alloys is discussed. This technique is compared to the more frequently used statically loaded, alternate immersion test technique used for evaluating the susceptibility of aluminum alloys to stress corrosion cracking (SCC). Aluminum alloys (2124 and 7075), each in three conditions with differing susceptibilities to SCC, were tested by both the statically loaded alternate immersion test and the slow strain-rate technique. The results of these tests are compared and the slow strain-rate test is shown to be a viable, rapid technique for determining the SCC susceptibility of aluminum alloys.
Author :
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.:/5 (317 download)
Download or read book The Stress-corrosion Behavior of Al-Li-Cu Alloys: A Comparison of Test Methods written by and published by . This book was released on 1982 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. A. Kelsey
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (125 download)
Download or read book Evaluation of Various Techniques for Stress Corrosion Testing Welded Aluminum Alloys written by R. A. Kelsey and published by . This book was released on 1967 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the development of high-strength, weldable aluminum alloys it is necessary to determine the resistance to stress corrosion cracking of experimental combinations of parent plate and filler alloys. Several types of specimen and methods of loading have been studied to evaluate techniques suitable for rapid screening of alloys and for demonstrating the serviceability of alloys. Stress corrosion tests have been conducted in 3.5 per cent sodium chloride by alternate immersion and in seacoast and industrial atmospheres, comparing beam and tension specimens. The beam specimens were loaded by constant deformation, and tension specimens were loaded both by constant deformation and by constant load. Welded specimens designed to investigate the effect of residual welding stresses upon both butt welds and fillet welds also are included.
Author : Robert Baboian
Publisher : ASTM International
ISBN 13 :
Total Pages : 887 pages
Book Rating : 4./5 ( download)
Download or read book Corrosion Tests and Standards written by Robert Baboian and published by ASTM International. This book was released on 2005 with total page 887 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 340 pages
Book Rating : 4.:/5 (317 download)
Download or read book A Study of Environmental Characterization of Conventional and Advanced Aluminum Alloys for Selection and Design. Phase 2: The Breaking Load Test Method written by and published by . This book was released on 1984 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. N. Williams
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.3/5 (91 download)
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).
Author : L. Schra
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (125 download)
Download or read book Further Evaluation of Automated Stress Corrosion Ring (ASCOR) Testing of Aluminum Alloys written by L. Schra and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1991 a simple automated stress corrosion testing method called the ASCOR (automated stress corrosion ring) test was developed to test aluminum alloys according to ASTM Practice for Evaluating Stress Corrosion Cracking Resistance of Metals and Alloys by Alternate Immersion in 3.5% Sodium Chloride Solution (G 44) and using direct stressing as in ASTM Practice for Preparation and Use of Direct Tension Stress-Corrosion Test Specimens (G 49). The present investigation concentrated on evaluating two aspects of the test method: • The SCC initiation criterion (2% load decrease). • The possibility of defining a threshold stress for micro SCC growth in addition to that for macro SCC growth.
Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel
Publisher :
ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.E/5 ( download)
Download or read book Specialists Meeting on Stress Corrosion Testing Methods written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel and published by . This book was released on 1972 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : RJ. Bucci
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book Damage-Based Assessment of Stress Corrosion Performances Among Aluminum Alloys written by RJ. Bucci and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: At Alcoa Laboratories the breaking load test was developed to provide a more discriminating accelerated laboratpry practice for rating stress corrosion cracking (SCC) performances of relatively resistant aluminum materials. The method involves residual strength measurements from tensile bar specimens previously exposed to sustained tensile stress in a corrosive medium. The degree of SCC degradation is measured by comparing the specimen postexposure strength with the original tensile strength (no exposure); the greater the strength loss, the more harmful the attack. In contrast to the more traditional pass/fail life testing approaches, the breaking load method enables numerical differentiation among materials and precludes long waiting periods for specimens to fail in the environment. In addition, the breaking load method provides descriptors amenable to flaw size and probabilistic fracture mechanics interpretations, thereby enabling expression of SCC ratings in meaningful terms of crack initiation and growth kinetics. Conventionally used descriptors of SCC behavior (e.g., time to failure, percent survival, threshold stress, KIscc) are influenced to varying degrees by both the strength and toughness of the test material and the conditions of the testing (e.g., specimen geometry and loading method). The damage-based evaluation of breaking load data is advantageous in that potential biases in SCC performance ratings caused by material property differences and specimen size effects can be normalized.
