scholarly journals Effect of martensitic phase transformation on the behavior of 304 austenitic stainless steel under tension

2016 ◽  
Vol 649 ◽  
pp. 174-183 ◽  
Author(s):  
H. Wang ◽  
Y. Jeong ◽  
B. Clausen ◽  
Y. Liu ◽  
R.J. McCabe ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Phase Transformation ◽  
Austenitic Stainless Steel ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation ◽  
304 Austenitic Stainless Steel

Phase Transformation and Annealing Behavior of SUS 304 Austenitic Stainless Steel Deformed by High Pressure Torsion

2010 ◽  
Vol 654-656 ◽  
pp. 334-337 ◽  
Author(s):  
Innocent Shuro ◽  
Minoru Umemoto ◽  
Yoshikazu Todaka ◽  
Seiji Yokoyama
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Phase Transformation ◽  
Austenitic Stainless Steel ◽  
Volume Fraction ◽  
High Pressure Torsion ◽  
Two Phase ◽  
Annealing Behavior ◽  
304 Austenitic Stainless Steel ◽  
Deformed State

SUS 304 austenitic stainless steel was subjected to severe plastic deformation (SPD) by the method of high pressure torsion (HPT). From a fully austenitic matrix (γ), HPT resulted in phase transformation to give a two phase structure of austenite (γ) and martensite (α') by the transformation γα'. The phase transformation was accompanied by an increase in hardness (Hv) from 1.6 GPa in the as annealed form to 5.4 GPa in the deformed state. Subsequent annealing in temperature range 250oC to 450oC resulted in an increase in both α' volume fraction and hardness (6.4 GPa). Annealing at 600oC resulted in a decrease in α' volume fraction hardness.

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