Effect of Nitrogen Content on the Tensile and Stress Corrosion Cracking Behavior of AISI Type 316LN Stainless Steels

被引：6

作者：

Poonguzhali, A. ^{[1
]}

Anita, T. ^{[1
]}

Sivaibharasi, N. ^{[1
]}

Shaikh, H. ^{[2
]}

Dayal, R. K. ^{[3
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Corros Sci & Technol Div, Kalpakkam 603102, Tamil Nadu, India

[2] Mohamed Sathak AJ Coll Engn, Chennai 603103, Tamil Nadu, India

[3] VIT Univ, Sch Mech & Bldg Sci, Chennai 600048, Tamil Nadu, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2014年 / 67卷 / 02期

关键词：

Type 316LN stainless steel; Slow strain rate testing; Constant load testing; Stress ratio; Crack propagation rate; WELD METAL; SENSITIZATION; CHLORIDE; DEFORMATION; GROWTH;

D O I：

10.1007/s12666-013-0330-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This paper deals with the effect of nitrogen on the tensile and stress corrosion cracking (SCC) behavior of type 316LN stainless steel. Yield stress (YS) and ultimate tensile stress (UTS) increased while the ductility [% total elongation (% TE)] decreased with increasing nitrogen content. Evaluation by conventional assessment parameters, such as ratios of UTS, % TE and SCC susceptibility index, derived by SCC testing using the slow strain rate testing (SSRT) technique indicated an improvement in SCC resistance on increasing the nitrogen content. However, crack growth rates, calculated from ratios of fracture stress from the SSRT tests in liquid paraffin and boiling 45 % magnesium chloride in SSRT tests, and the constant load tests at loads corresponding to 20 % YS in boiling 45 % magnesium chloride conclusively established that the SCC resistance of type 316LN stainless steel decreased with increasing nitrogen content.

引用

页码：177 / 184

页数：8

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