Intergranular Corrosion Behavior of Low-Nickel and 304 Austenitic Stainless Steels

2016 ◽  
Vol 25 (9) ◽  
pp. 3615-3626 ◽  
Author(s):  
Ankur V. Bansod ◽  
Awanikumar P. Patil ◽  
Abhijeet P. Moon ◽  
Nilay N. Khobragade
Keyword(s):  
Corrosion Behavior ◽  
Stainless Steels ◽  
Intergranular Corrosion ◽  
Austenitic Stainless Steels

Influence of Impurities on Intergranular Corrosion of Extra High Purity Austenitic Stainless Steels

2009 ◽  
Author(s):  
Ikuo Ioka ◽  
Jun Suzuki ◽  
Takafumi Motoka ◽  
Kiyoshi Kiuchi ◽  
Junpei Nakayama
Keyword(s):  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Stainless Steels ◽  
High Purity ◽  
Intergranular Corrosion ◽  
Active Sites ◽  
Degradation Mechanism ◽  
Austenitic Stainless Steels ◽  
Hno3 Solution ◽  
Nuclear Fuel Reprocessing Plant

An intergranular corrosion is observed in austenitic stainless steels exposed to high temperature, concentrated nitric acid (HNO3) solution with highly oxidizing ions. It is an important degradation mechanism of austenitic stainless steels for use in a nuclear fuel reprocessing plant. The intergranular corrosion is caused by the segregation of impurities to grain boundaries and the resultant formation of active sites. Extra High Purity (EHP™) austenitic stainless steel was developed with conducting the new multiple refined melting in order to suppress the total harmful impurities less than 100ppm. The intergranular corrosion behavior of EHP alloys with various impurities was examined in boiling HNO3 solution with highly oxidizing ions to find a correlation between the intergranular corrosion and the impurities of EHP alloys. A good correlation was confirmed between the degree of intergranular corrosion and the corrosion rate. The relationships between the corrosion rate and the impurities content of EHP alloys was determined using a multiple regression analysis. The influence on corrosion rate became small in order of B, P, Si, C, S and Mn. It was important to control B in intergranular corrosion behavior of EHP alloys.

Study on the Intergranular Corrosion of Cold Worked Austenitic Stainless Steels

1986 ◽  
Vol 8 ◽  
pp. 593-604 ◽  
Author(s):  
Gianni Rondelli ◽  
B. Mazza ◽  
Tommaso Pastore ◽  
Bruno Vicentini
Keyword(s):  
Stainless Steels ◽  
Intergranular Corrosion ◽  
Austenitic Stainless Steels ◽  
Cold Worked

scholarly journals Crevice Corrosion Behavior of Nitrogen Bearing Austenitic Stainless Steels

1999 ◽  
Vol 48 (3) ◽  
pp. 169-175 ◽  
Author(s):  
Alberto A. Ono ◽  
Tadashi Shinohara ◽  
Shigeo Tsujikawa
Keyword(s):  
Corrosion Behavior ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
Austenitic Stainless Steels

CARTECH 347

Alloy Digest ◽  
2021 ◽  
Vol 70 (9) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
Intergranular Corrosion ◽  
Austenitic Stainless Steels ◽  
Heat Treating ◽  
Intermittent Heating ◽  
Technology Corporation ◽  
Carpenter Technology Corporation

Abstract CarTech 347 is a niobium+tantalum stabilized austenitic stainless steel. Like Type 321 austenitic stainless steel, it has superior intergranular corrosion resistance as compared to typical 18-8 austenitic stainless steels. Since niobium and tantalum have stronger affinity for carbon than chromium, carbides of those elements tend to precipitate randomly within the grains instead of forming continuous patterns at the grain boundaries. CarTech 347 should be considered for applications requiring intermittent heating between 425 and 900 °C (800 and 1650 °F). This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1339. Producer or source: Carpenter Technology Corporation.

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