ASM Failure Analysis Case Histories: Mechanical and Machine Components
Metallographic Characterization of Stress Corrosion Cracking in High Strength Bolts
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Published:2019
Abstract
Diagnosis of environmentally induced failures is greatly facilitated by metallographic analysis. As an example, a failure analysis of ASTM A574 material grade bolts is presented. The bolts served as bonnet screws in underground valves and failed due to stress-corrosion cracking. Metallographic methods were used to diagnose and provide solutions for the service failure. Included are photos showing crack propagation morphology and fracture surface appearance.
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Member Sign InS.H. Magner, W.N. Weins, Metallographic Characterization of Stress Corrosion Cracking in High Strength Bolts, ASM Failure Analysis Case Histories: Mechanical and Machine Components, ASM International, 2019, https://doi.org/10.31399/asm.fach.mech.c9001721
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