Low temperature nitriding mechanisms of austenitic stainless steels in N2 Roux, T., Saker, A., Leroy, C., Frantz, C. and Michel, H. Proc. 9th International Congress on Heat Treatment and Surface Engineering and 5th French Open International Conference on Heat Treatment, Nice-Acropolis, France (26–28 Sept. 1994) 291–299 (in French)

1996 ◽  
Vol 18 (1) ◽  
pp. 60
Keyword(s):  
Heat Treatment ◽  
Low Temperature ◽  
Stainless Steels ◽  
Surface Engineering ◽  
Austenitic Stainless Steels ◽  
International Congress ◽  
International Conference

Strain-induced martensite effects on transgranular carbide precipitation in type 304 stainless steels

1991 ◽  
Vol 49 ◽  
pp. 604-605
Author(s):  
A.H. Advani ◽  
L.E. Murr ◽  
D. Matlock
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Deformation Twin ◽  
Austenitic Stainless Steels ◽  
Carbide Precipitation ◽  
Strain Induced Martensite ◽  
Type 304

Thermomechanically induced strain is a key variable producing accelerated carbide precipitation, sensitization and stress corrosion cracking in austenitic stainless steels (SS). Recent work has indicated that higher levels of strain (above 20%) also produce transgranular (TG) carbide precipitation and corrosion simultaneous with the grain boundary phenomenon in 316 SS. Transgranular precipitates were noted to form primarily on deformation twin-fault planes and their intersections in 316 SS.Briant has indicated that TG precipitation in 316 SS is significantly different from 304 SS due to the formation of strain-induced martensite on 304 SS, though an understanding of the role of martensite on the process has not been developed. This study is concerned with evaluating the effects of strain and strain-induced martensite on TG carbide precipitation in 304 SS. The study was performed on samples of a 0.051%C-304 SS deformed to 33% followed by heat treatment at 670°C for 1 h.

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