Geometric dynamic recrystallization of austenitic stainless steel through linear plane-strain machining

2020 ◽  
Vol 100 (9) ◽  
pp. 1102-1128 ◽  
Author(s):  
Yaakov Idell ◽  
Jörg Wiezorek ◽  
Giovanni Facco ◽  
Andreas Kulovits ◽  
M. Ravi Shankar
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Dynamic Recrystallization ◽  
Plane Strain

Structural Changes in a 304-Type Austenitic Stainless Steel Processed by Multiple Hot Rolling

2011 ◽  
Vol 409 ◽  
pp. 730-735 ◽  
Author(s):  
Zhanna Yanushkevich ◽  
Andrey Belyakov ◽  
Rustam Kaibyshev
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Dynamic Recrystallization ◽  
Grain Boundaries ◽  
Hot Rolling ◽  
Structural Changes ◽  
The Other ◽  
Dynamic Processes ◽  
Mean Size ◽  
The Mean

The microstructure evolution and the dynamic processes of grain refinement in a 304-type austenitic stainless steel during multiple calibre hot rolling at temperatures of 700-1000°C were studied. The structural changes are characterized by the elongation of original grains towards the rolling axis and the development of new fine grains, the mean size of which decreases with decreasing the deformation temperature. During multiple rolling at 1000°C, the new grains resulted from the development of discontinuous dynamic recrystallization involving a bulging of frequently corrugated grain boundaries. On the other hand, the new grain boundaries leading to remarkable refinement of original microstructure were developed at temperatures below 800°C as a result of continuous strain-induced reactions.

Kinetics of dynamic recrystallization in Ti-modified 15Cr–15Ni–2Mo austenitic stainless steel

2013 ◽  
Vol 432 (1-3) ◽  
pp. 9-15 ◽  
Author(s):  
A. Sarkar ◽  
A. Marchattiwar ◽  
J.K. Chakravartty ◽  
B.P. Kashyap
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Dynamic Recrystallization ◽  
Kinetics Of

Recrystallization in 304 Austenitic Stainless Steel

2004 ◽  
Vol 467-470 ◽  
pp. 1163-1168 ◽  
Author(s):  
A. Dehghan-Manshadi ◽  
Hossein Beladi ◽  
Matthew R. Barnett ◽  
Peter D. Hodgson
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Dynamic Recrystallization ◽  
Grain Boundaries ◽  
Peak Stress ◽  
Peak Strain ◽  
High Angle ◽  
Initial Nucleation ◽  
304 Austenitic Stainless Steel ◽  
Hot Torsion

A 304 austenitic stainless steel was deformed using hot torsion to study the evolution of dynamic recrystallization (DRX). The initial nucleation of dynamically recrystallization occurred by the bulging of pre-existing high angle grain boundaries at a strain much lower than the peak strain. At the peak stress, only a low fraction of the prior grain boundaries were covered with new DRX grains. Beyond the peak stress, new DRX grains formed layers near the initial DRX and a necklace structure was developed. Several different mechanisms appeared to be operative in the formation of new high angle boundaries and grains. The recrystallization behaviour after deformation showed a classic transition from strain dependent to strain independent softening. This occurred at a strain beyond the peak, where the fraction of dynamic recrystallization was only 50%.

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