Mechanism of intergranular corrosion of 316L stainless steel in oxidizing acids

1980 ◽  
Vol 14 (11) ◽  
pp. 1175-1179 ◽  
Author(s):  
T.M. Devine ◽  
C.L. Briant ◽  
B.J. Drummond
Keyword(s):  
Stainless Steel ◽  
Intergranular Corrosion ◽  
316L Stainless Steel

Precipitation formation on ∑5 and ∑7 grain boundaries in 316L stainless steel and their roles on intergranular corrosion

2021 ◽  
pp. 116822
Author(s):  
Shao-Pu Tsai ◽  
Surendra Kumar Makineni ◽  
Baptiste Gault ◽  
Kaori Kawano-Miyata ◽  
Akira Taniyama ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Grain Boundaries ◽  
Intergranular Corrosion ◽  
316L Stainless Steel ◽  
Precipitation Formation

The Effect of Sigma Phase vs Chromium Carbides On the Intergranular Corrosion Of Type 316 and 316L Stainless Steel (Part 2—Laboratory Investigation)★

CORROSION ◽  
1959 ◽  
Vol 15 (5) ◽  
pp. 17-28 ◽  
Author(s):  
DONALD WARREN
Keyword(s):  
Stainless Steel ◽  
Intergranular Corrosion ◽  
Sigma Phase ◽  
316L Stainless Steel ◽  
Steel Part ◽  
Intergranular Attack ◽  
Acid Media ◽  
Chromium Carbides ◽  
Type 316L ◽  
Stainless Steel Part

Abstract A laboratory study was made of the intergranular corrosion behavior of Types 316 and 316L stainless steel in 14 different acid environments. Included were nitric, nitric-hydrofluoric, acetic, citric, sulfuric, lactic, oxalic, formic and phosphoric acids. Results of this study showed that sensitized or welded Type 316L had excellent resistance to intergranular attack in all of the acid media except nitric. This was true despite the presence of a continuous network of sigma phase in the grain boundaries of the sensitized steel. In contrast, Type 316 having a continuous grain boundary network of chromium carbides underwent severe intergranular corrosion in 12 of the 14 environments studied. 3.2.2

Study on Intergranular Corrosion of Sensitized 316L Stainless Steel

2013 ◽  
Vol 331 ◽  
pp. 391-395
Author(s):  
Yong Quan Li ◽  
Wen Jie Bai ◽  
Shao Qing Pu ◽  
Xu Meng Xie ◽  
Quan Duan
Keyword(s):  
Stainless Steel ◽  
Intergranular Corrosion ◽  
316L Stainless Steel ◽  
Rapid Development ◽  
Large Degree ◽  
Development Stage ◽  
Small Degree ◽  
Inspection Method ◽  
Time Extension ◽  
Material Grain Size

The results of experimental study on intergranular corrosion of sensitized 316L stainless steel by mass loss measurement and metallographic inspection method through boiling nitric acid experiments show that: the intergranular corrosion behavior of sensitized 316L stainless steel is mainly divided into three stages: initiation stage, stable stage and rapid development stage, the corrosion rate added with the experimental time extension; the degree of intergranular corrosion has a direct relationship with material grain size, large grain regions have a small degree of intergranular corrosion; and small grain regions have a large degree of intergranular corrosion, even leading to pitting corrosion.

Microscopic Analysis of Intergranular Corrosion of 316L Stainless Steel

2014 ◽  
Vol 487 ◽  
pp. 185-188
Author(s):  
Li Chan Li ◽  
Meng Yu Chai ◽  
Wen Jie Bai ◽  
Quan Duan
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Base Metal ◽  
Intergranular Corrosion ◽  
Nuclear Power ◽  
316L Stainless Steel ◽  
Welding Process ◽  
Microscopic Analysis ◽  
Material Failure ◽  
Intergranular Corrosion Resistance

316L stainless steel is a common material in nuclear power equipments. Intergranular corrosion is a hidden and destructive mode of material failure. It is important to study the intergranular corrosion behavior of the 316L to ensure the safety of nuclear power equipments. A series of research has been conducted on properties of 316L including the microstructure of the base metal and the weldment and that under the condition of intergranular corrosion. Through the experiments, an intuitive understanding of the microstructure of the base metal and the weldment has been established. Moreover, the intergranular corrosion resistance can be reflected by the condition of grain separation on metallograph. In resistance of intergranular corrosion, by comparison, the heat affected zone was the worst and the weld joint performed quite well. Thus, the heat effect in welding process must be controlled to improve the intergranular corrosion resistance of the equipment.

The effect of sub-grain structure on intergranular corrosion of 316L stainless steel fabricated via selective laser melting

2019 ◽  
Vol 243 ◽  
pp. 157-160 ◽  
Author(s):  
Cheng Man ◽  
Zhiwei Duan ◽  
Zhongyu Cui ◽  
Chaofang Dong ◽  
Decheng Kong ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Selective Laser Melting ◽  
Intergranular Corrosion ◽  
316L Stainless Steel ◽  
Grain Structure ◽  
Laser Melting
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