Effect of Cyclic Thermal Process on Ultrafine Grain Formation in AISI 304L Austenitic Stainless Steel

2009 ◽  
Vol 40 (13) ◽  
pp. 3226-3234 ◽  
Author(s):  
B. Ravi Kumar ◽  
B. Mahato ◽  
Sailaja Sharma ◽  
J.K. Sahu
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Thermal Process ◽  
Ultrafine Grain ◽  
Aisi 304L ◽  
Grain Formation

Influence of Annealing Process on Recrystallisation Behaviour of a Heavily Cold Rolled AISI 304L Stainless Steel on Ultrafine Grain Formation

2012 ◽  
Vol 715-716 ◽  
pp. 334-339 ◽  
Author(s):  
B. Ravi Kumar ◽  
J.K. Sahu ◽  
S.K. Das
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Thermal Process ◽  
Austenitic Stainless Steels ◽  
Ultrafine Grain ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Aisi 304L Stainless Steel ◽  
Grain Formation ◽  
Cold Rolled

AISI 304L austenitic stainless steel was cold rolled to 90% with and no inter-pass cooling to produced 89% and 43% of deformation induced martensite respectively. The cold rolled specimens were annealed by isothermal and cyclic thermal process. The microstructures of the cold rolled and annealed specimens were studied by the electron microscope. The observed microstructural changes were correlated with the reversion mechanism of martensite to austenite and strain heterogeneity of the microstructure. The results indicated possibility of ultrafine austenite grain formation by cyclic thermal process for austenitic stainless steels those do not readily undergo deformation induced martensite. Keywords: Austenitic stainless steel, Grain refinement, Cyclic thermal process, Ultrafine grain

Progress of Recrystallisation in Cold Rolled Austenitic Stainless Steel during Cyclic Thermal Process

2011 ◽  
Vol 702-703 ◽  
pp. 627-630
Author(s):  
B. Ravi Kumar
Keyword(s):  
Retained Austenite ◽  
Thermal Process ◽  
Annealing Treatment ◽  
Ultrafine Grain ◽  
Electron Backscattered Diffraction ◽  
Aisi 304L ◽  
Grain Formation ◽  
Strain Induced Martensite ◽  
Cold Rolled ◽  
Evolution Of Microstructure

The present study aims to understand the evolution of microstructure leading to nano/ultrafine grain formation during cyclic thermal process. A commercial grade of AISI 304L austenitic SS was cold rolled which resulted in a creation of a dual microstructure having strain induced martensite (43%) and heavily deformed retained austenite. The dual phase microstructure was subjected to cyclic thermal annealing process at 825 °C. The events occurring in; a) retained austenite and b) reverted austenite formed by phase reversion of strain induced martensite, during annealing treatment, were studied by the Electron backscattered diffraction (EBSD). The study revealed recrystallisation process of the two austenite grains, which resulted into ultrafine grain formation during cyclic thermal process.

Effect of annealing temperature on nano/ultrafine grain of Ni-free austenitic stainless steel

2014 ◽  
Vol 592 ◽  
pp. 77-82 ◽  
Author(s):  
P. Behjati ◽  
A. Kermanpur ◽  
A. Najafizadeh ◽  
H. Samaei Baghbadorani
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Annealing Temperature ◽  
Ultrafine Grain

scholarly journals Comprehensive study of deuterium-induced effects in austenitic stainless steel AISI 304L

2019 ◽  
Vol 44 (23) ◽  
pp. 12228-12238 ◽  
Author(s):  
Andreas Röhsler ◽  
Oded Sobol ◽  
Wolfgang E.S. Unger ◽  
Thomas Böllinghaus
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Aisi 304L ◽  
Steel Aisi ◽  
Stainless Steel Aisi ◽  
Comprehensive Study
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