Influence of prior deformation temperature on strain induced martensite formation and its effect on the tensile strengthening behaviour of type 304 SS studied by XRDLPA

2021 ◽  
Vol 826 ◽  
pp. 141960
Author(s):  
C. Teena Mouni ◽  
Mahadevan S ◽  
Ravishankar C ◽  
Shaju K. Albert ◽  
C.R. Das ◽  
...  
Keyword(s):  
Deformation Temperature ◽  
Martensite Formation ◽  
Prior Deformation ◽  
Strain Induced Martensite ◽  
Type 304

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.

Strain induced martensite formation in PM nickel steels

2012 ◽  
Vol 55 (5) ◽  
pp. 348-353 ◽  
Author(s):  
B Tougas ◽  
C Blais ◽  
F Chagnon ◽  
S Pelletier
Keyword(s):  
Martensite Formation ◽  
Strain Induced Martensite

Modelling of the Influence of Prior Deformation of Austenite on the Martensite Formation in a Low-Alloyed Carbon Steel

2018 ◽  
Vol 941 ◽  
pp. 95-99
Author(s):  
Jessica Gyhlesten Back ◽  
Lars Erik Lindgren
Keyword(s):  
Plastic Deformation ◽  
Carbon Steel ◽  
Martensite Transformation ◽  
Austenite Phase ◽  
Experimental Result ◽  
Extended Version ◽  
Martensite Formation ◽  
Formation Model ◽  
Prior Deformation ◽  
Nucleation Sites

The current work aims at developing models supporting design of the rolling and quenching processes. This requires a martensite formation model that can account for effect of previous plastic deformation as well as evolution of stress and temperature during the quenching step. The effect of deformation prior to the cooling on the transformation is evaluated. The experimental result shows that prior deformation impedes the martensite transformation due to the mechanical stabilisation of the austenite phase. Larger deformation above 30 % reduces the effect of the mechanical stabilisation due to increase in martensite nucleation sites. The computed transformation curves, based on an extended version of the Koistinen-Marburger equation, agree well with experimental results for pre-straining less than 30 %.

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