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http://dx.doi.org/10.14775/ksmpe.2018.17.3.016

A Study of the Heat Treatment Effect on the Fatigue Crack Growth Behavior in Dissimilar Weld Metal Joints of SA508 Low-Carbon Steel and AISI316 Austenitic Stainless Steel  

Kim, Chung-Seok (Department of Materials Science and Engineering, Chosun University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.17, no.3, 2018 , pp. 16-21 More about this Journal
Abstract
The effect of heat treatment on the fatigue crack growth behavior in welded joints between the heat-affected zone (HAZ) of SA 508 Cl.3 low-alloy steel and HAZ of AISI 316L stainless steel is investigated. When the crack propagates across SA 508 Cl.3 or AISI 316L SS and HAZ into the weldment, the fatigue crack growth rate (FCGR) in the HAZ region does not change or decrease despite the increase in stress intensity factor ${\Delta}K$. The residual stress at the HAZ region is more compressive than that at the base Δ materials and weldment. The effect of the welding residual stress on the crack growth behavior is determined by performing a residual stress relief heat treatment at $650^{\circ}C$ for 1h and subsequent furnace cooling. The FCG behavior in the HAZ region in the as-welded specimen and the residual stress relief heat-treated specimen is discussed in terms of the welding residual stress.
Keywords
Heat Treatment; Fatigue; Crack Growth; Dissimilar Weld;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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