Stress Corrosion Evaluation of Titanium Alloys Using Ductile Fracture Mechanics Technology

Stress Corrosion Evaluation of Titanium Alloys Using Ductile Fracture Mechanics Technology

Author: DR. Anderson

Publisher:

Published: 1984

Total Pages: 16

ISBN-13:

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The objective of this investigation was to assess the feasibility of using J-integral fracture mechanics test techniques to quantify the stress corrosion characteristics of a titanium alloy in seawater. A series of elastic compliance J-integral tests were performed with 1TCT (modified compact tension) specimens of Ti-7Al-2Cb-1Ta in air and under conditions where the crack tip was exposed to seawater. A complementary series of single edge notched cantilever beam tests were performed in natural flowing seawater. Results showed that the stress corrosion susceptibility of this alloy was clearly identifiable in J-integral tests using the JI-R curve extrapolation method. The linear elastic crack initiation thresholds obtained with compact specimens under monotonically increasing load bracketed test results obtained with dead-weight-loaded cantilever beam specimens. For this alloy, the stress corrosion cracking microfracture process was identical in stagnant and fresh-flowing seawater.


Stress Corrosion Cracking

Stress Corrosion Cracking

Author: V S Raja

Publisher: Elsevier

Published: 2011-09-22

Total Pages: 817

ISBN-13: 0857093762

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The problem of stress corrosion cracking (SCC), which causes sudden failure of metals and other materials subjected to stress in corrosive environment(s), has a significant impact on a number of sectors including the oil and gas industries and nuclear power production. Stress corrosion cracking reviews the fundamentals of the phenomenon as well as examining stress corrosion behaviour in specific materials and particular industries. The book is divided into four parts. Part one covers the mechanisms of SCC and hydrogen embrittlement, while the focus of part two is on methods of testing for SCC in metals. Chapters in part three each review the phenomenon with reference to a specific material, with a variety of metals, alloys and composites discussed, including steels, titanium alloys and polymer composites. In part four, the effect of SCC in various industries is examined, with chapters covering subjects such as aerospace engineering, nuclear reactors, utilities and pipelines. With its distinguished editors and international team of contributors, Stress corrosion cracking is an essential reference for engineers and designers working with metals, alloys and polymers, and will be an invaluable tool for any industries in which metallic components are exposed to tension, corrosive environments at ambient and high temperatures. Examines the mechanisms of stress corrosion cracking (SCC) presenting recognising testing methods and materials resistant to SCC Assesses the effect of SCC on particular metals featuring steel, stainless steel, nickel-based alloys, magnesium alloys, copper-based alloys and welds in steels Reviews the monitoring and management of SCC and the affect of SCC in different industries such as petrochemical and aerospace


Slow Strain Rate Testing for the Evaluation of Environmentally Induced Cracking

Slow Strain Rate Testing for the Evaluation of Environmentally Induced Cracking

Author: R. D. Kane

Publisher: ASTM International

Published: 1993

Total Pages: 298

ISBN-13: 0803118708

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In order to predict when and how a material will crack under environmental conditions, engineers used to subject it to pressure for a long time, up to a year in cases; about 20 years ago, a testing method was developed that slowly but inexorably increases the pressure, which seems to cut down the ti