scholarly journals Correction to: Transitional Behavior for Dynamic Recrystallization in Nuclear Grade 316H Stainless Steel during Hot Deformation

2021 ◽  
Author(s):  
Zhiguo Wang ◽  
Fei Gao ◽  
Weina Zhang ◽  
Guangming Cao ◽  
Zhenyu Liu
Keyword(s):  
Stainless Steel ◽  
Dynamic Recrystallization ◽  
Hot Deformation ◽  
Nuclear Grade ◽  
Transitional Behavior

scholarly journals Effect of Nitrogen Content on Hot Deformation Behavior and Grain Growth in Nuclear Grade 316LN Stainless Steel

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Ming-wei Guo ◽  
Zhen-hua Wang ◽  
Ze-an Zhou ◽  
Shu-hua Sun ◽  
Wan-tang Fu
Keyword(s):  
Stainless Steel ◽  
Dynamic Recrystallization ◽  
Strain Rate ◽  
Grain Growth ◽  
Strain Rate Sensitivity ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Rate Sensitivity ◽  
Processing Maps ◽  
Hot Deformation Behavior

316LN stainless steel with 0.08%N (08N) and 0.17%N (17N) was compressed at 1073–1473 K and 0.001–10 s−1. The hot deformation behavior was investigated using stress-strain curve analysis, processing maps, and so forth. The microstructure was analyzed through electron backscatter diffraction analysis. Under most conditions, the deformation resistance of 17N was higher than that of 08N. This difference became more pronounced at lower temperatures. The strain rate sensitivity increased with increasing temperature for types of steel. In addition, the higher the N content, the higher the strain rate sensitivity. Hot deformation activation energy increased from 487 kJ/mol to 549 kJ/mol as N concentration was increased from 0.08% to 0.17%. The critical strain for initiation of dynamic recrystallization was lowered with increasing N content. In the processing maps, both power dissipation ratio and unstable region increased with increasing N concentration. In terms of microstructure evolution, N promoted dynamic recrystallization kinetic and decreased dynamic recrystallization grain size. The grain growth rate was lower in 17N than in 08N during heat treatment. Finally, it was found that N favored twin boundary formation.

scholarly journals Investigation on Dynamic Recrystallization Behavior of Martensitic Stainless Steel

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Facai Ren ◽  
Fei Chen ◽  
Jun Chen
Keyword(s):  
Stainless Steel ◽  
Dynamic Recrystallization ◽  
Hot Deformation ◽  
Martensitic Stainless Steel ◽  
Flow Curves ◽  
Hollomon Parameter ◽  
Temperature Range ◽  
Characteristic Points ◽  
Dynamic Recrystallization Behavior ◽  
Recrystallized Grain Size

The hot deformation behavior of X20Cr13 martensitic stainless steel was studied using the hot compression flow curves corresponding to the temperature range of 900–1150°C under strain rates from 0.01 to 10 s−1. A new mathematical model to estimate the flow stress under hot deformation conditions up to the peak of the flow curves was developed. The critical strains for initiation of dynamic recrystallization were also derived by the developed model. Furthermore, the effects of Zener-Hollomon parameter on the characteristic points of the flow curves were studied using the power law relation. The deformation activation energy obtained for this steel was 359.4 kJ/mol in the temperature range from 900°C to 1150°C. At the same time, the Avrami kinetic equation of dynamic recrystallization for X20Cr13 steel and the recrystallized grain size model were also established. Good agreement was obtained between the predictions and the experimental values.

Sign in / Sign up

Export Citation Format

Share Document