Sensitization control in AISI 316L(N) austenitic stainless steel: Defining the role of the nature of grain boundary

被引：50
|
作者：
Parvathavarthini, N. [1 ]
Mulki, S. [2 ]
Dayal, R. K. [1 ]
Samajdar, I. [2 ]
Mani, K. V. [3 ]
Raj, Baldev [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Corros Sci & Technol Div, Mat Dev & Characterisat Grp, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India
[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Mumbai 400076, Maharashtra, India
[3] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
来源：
CORROSION SCIENCE | 2009年 / 51卷 / 09期
关键词：
Stainless steel; Polarization; Intergranular corrosion; CORROSION BEHAVIOR; INTERGRANULAR CORROSION; CHARACTER-DISTRIBUTION; CARBIDE PRECIPITATION; CHLORIDE MEDIA; 304-STAINLESS-STEEL; COPPER; CU; POLARIZATION; RESISTANCE;
D O I：
10.1016/j.corsci.2009.05.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two grades of AISI 316L(N) austenitic stainless steels differing only in copper content (0.083 and 0.521 wt.%), showed remarkable difference in resistance to sensitization and susceptibility to intergranular corrosion. Different thermal treatments were carried out with an overall objective of altering the nature of the grain boundary. An attempt was made to correlate the degree of sensitization (DOS) with various microstructural parameters such as grain size and grain boundary nature. No clear trend could be established between the individual parameters and DOS. Effective grain boundary energy (EGBE), which is a combined parameter showed clear trend with DOS. The presence of 0.521 wt.% of copper brings down EGBE remarkably leading to improved resistance to sensitization. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2144 / 2150
页数：7
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