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Abstract

Failure analysis of steel welds may be divided into three categories. They include failures due to design deficiencies, weld-related defects usually found during inspection, and failures in field service. This chapter emphasizes the failures due to various discontinuities in the steel weldment. These include poor workmanship, a variety of hydrogen-assisted cracking failures, stress-corrosion cracking, fatigue, and solidification cracking in steel welds. Hydrogen-assisted cracking can appear in four common forms, namely underbead or delayed cracking, weld metal fisheyes, ferrite vein cracking, and hydrogen-assisted reduced ductility.

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J.H. Devletian, D. Van Dyke, 2008. "Failure Analysis of Steel Welds", Failure Analysis of Heat Treated Steel Components, Lauralice de C.F. Canale, Rafael A. Mesquita, George E. Totten

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