Effect of Post-Weld Heat Treatment on Mechanical and Electrochemical Properties of Gas Metal Arc-Welded 316L (X2CrNiMo 17-13-2) Stainless Steel

被引：0
|
作者：
F. Muhammad
A. Ahmad
A. Farooq
W. Haider
机构：
[1] University of Engineering and Technology,Department of Metallurgical and Materials Engineering
[2] University of the Punjab,Corrosion Control Research Cell, Department of Metallurgy and Materials Engineering, CEET
[3] Central Michigan University,School of Engineering and Technology
来源：
Journal of Materials Engineering and Performance | 2016年 / 25卷
关键词：
AISI 316L (X2CrNiMo 17-13-2); gas metal arc welding; post-weld heat treatment; potentiodynamic polarization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In the present research work, corrosion behavior of post-weld heat-treated (PWHT) AISI 316L (X2CrNiMo 17-13-2) specimens joined by gas metal arc welding is compared with as-welded samples by using potentiodynamic polarization technique. Welded samples were PWHT at 1323 K for 480 s and quenched. Mechanical properties, corrosion behavior and microstructures of as-welded and PWHT specimens were investigated. Microstructural studies have shown grain size refinement after PWHT. Ultimate tensile strength and yield strength were found maximum for PWHT samples. Bend test have shown that PWHT imparted ductility in welded sample. Fractographic analysis has evidenced ductile behavior for samples. Potentiodynamic polarization test was carried out in a solution composed of 1 M H2SO4 and 1 N NaCl. Corrosion rate of weld region was 127.6 mpy, but after PWHT, it was decreased to 13.12 mpy.
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页码：4283 / 4291
页数：8
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