scholarly journals Austenite Stability and Deformation Behavior in Medium Mn Steel Processed by Cyclic Quenching ART Heat Treatment

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7132
Author(s):  
Chunquan Liu ◽  
Fen Xiong ◽  
Guanni Liu ◽  
Yong Wang ◽  
Yuxin Cao ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Retained Austenite ◽  
Tensile Fracture ◽  
Trip Effect ◽  
Austenite Grain Size ◽  
Austenite Stability ◽  
Retained Austenite Stability ◽  
Medium Mn Steel ◽  
Cyclic Quenching ◽  
Mn Steel

This study investigated the austenite stability and deformation behavior of cyclic quenching-austenite reverse transformation processed Fe-0.25C-3.98Mn-1.22Al-0.20Si-0.19Mo-0.03Nb medium Mn steel. A number of findings were obtained. Most importantly, the extent of the TRIP effect was mainly determined by an appropriately retained austenite stability rather than its content. Simultaneously, chemical elements were the key factors affecting austenite stability, of which Mn had the greatest impact, while the difference of retained austenite grain size and Mn content resulted in different degrees of retained austenite stability. Additionally, there were still large amounts of strip and granular-retained austenite shown in the microstructure of the CQ3-ART sample after tensile fracture, revealing that the excessively stable, retained austenite inhibited the generation of an extensive TRIP effect.

Effect of retained austenite stability on cyclic deformation behavior of low‐alloy transformation‐induced plasticity steels

2019 ◽  
Vol 42 (5) ◽  
pp. 1085-1099 ◽  
Author(s):  
Peter I. Christodoulou ◽  
Alexis T. Kermanidis ◽  
Gregory N. Haidemenopoulos ◽  
Daniel Krizan ◽  
Kyriaki Polychronopoulou
Keyword(s):  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Retained Austenite ◽  
Transformation Induced Plasticity ◽  
Austenite Stability ◽  
Retained Austenite Stability

The effect of retained austenite stability on high speed deformation behavior of TRIP steels

2006 ◽  
Vol 12 (1) ◽  
pp. 13-19 ◽  
Author(s):  
I. D. Choi ◽  
D. M. Kim ◽  
S. J. Kim ◽  
D. M. Bruce ◽  
D. K. Matlock ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Retained Austenite ◽  
High Speed ◽  
Trip Steels ◽  
Austenite Stability ◽  
Retained Austenite Stability ◽  
High Speed Deformation

scholarly journals A Novel Cyclic-Quenching-ART for Stabilizing Austenite in Nb–Mo Micro-Alloyed Medium-Mn Steel

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1090 ◽  
Author(s):  
Chunquan Liu ◽  
Qichun Peng ◽  
Zhengliang Xue ◽  
Chengwei Yang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Retained Austenite ◽  
Volume Fraction ◽  
Total Elongation ◽  
Practical Significance ◽  
Strengthening Effect ◽  
Medium Mn Steel ◽  
Cyclic Quenching ◽  
Mn Steel

In the context of obtaining an excellent elongation and tensile-strength combination in the third generation of advanced high strength steel, we emphasized the practical significance of adjusting the retained austenite fraction and stability in medium-Mn steel to obtain better mechanical properties. A novel cyclic quenching and austenite reverse transformation (CQ-ART) was used to obtain a large retained austenite content in Fe-0.25C-3.98Mn-1.22Al-0.20Si-0.19Mo-0.03Nb (wt.%) Nb–Mo micro-alloyed medium-Mn steel. The results show that after twice cyclic quenching and ART, the alloy exhibited optimum comprehensive properties, characterized by an ultimate tensile strength of 838 MPa, a total elongation of 90.8%, a product of strength and elongation of 76.1 GPa%, and the volume fraction of austenite of approximately 62 vol.%. The stability of retained austenite was significantly improved with the increasing of the number of cyclic quenching. Moreover, the effects of CQ-ART on the microstructure evolution, mechanical properties, C/Mn partitioning behavior, and austenite stability were investigated. Further, the strengthening effect of microalloying elements Nb–Mo was also discussed.

Evolution of microstructure and deformation behavior in Al–Ni added medium-Mn steel processed through intercritical / cold rolling and annealing

2021 ◽  
pp. 141852
Author(s):  
Biraj Kumar Sahoo ◽  
Vikas Chandra Srivastava ◽  
Avanish Kumar Chandan ◽  
Harpreet Singh Chhabra ◽  
Sandip Ghosh Chowdhury
Keyword(s):  
Cold Rolling ◽  
Deformation Behavior ◽  
Medium Mn Steel ◽  
Cold Rolling And Annealing ◽  
Evolution Of Microstructure ◽  
Mn Steel

Improving strength–ductility synergy in medium Mn steel by combining heterogeneous structure and TRIP effect

2021 ◽  
pp. 111661
Author(s):  
Xiliang Zhang ◽  
Rui Teng ◽  
Tao Liu ◽  
Yindong Shi ◽  
Zheng Lv ◽  
...  
Keyword(s):  
Heterogeneous Structure ◽  
Trip Effect ◽  
Medium Mn Steel ◽  
Mn Steel

Effect of Retained Austenite Stability on Mechanical Properties of Bainitic Rail Steel

2014 ◽  
Vol 1004-1005 ◽  
pp. 198-202 ◽  
Author(s):  
Kai Kai Wang ◽  
Zhun Li Tan ◽  
Gu Hui Gao ◽  
Xiao Lu Gui ◽  
Bing Zhe Bai
Keyword(s):  
Mechanical Properties ◽  
Impact Toughness ◽  
Retained Austenite ◽  
Rail Steel ◽  
High Impact ◽  
Good Thermal Stability ◽  
Austenite Stability ◽  
Retained Austenite Stability ◽  
Close Relationship ◽  
The Stability

Retained austenite has an important effect on strength and toughness of 20Mn2SiCrMo bainitic rail steel. In this work, the stability of retained austenite and mechanical properties have been studied. The results show that impact toughness of experimental steel has close relationship with the stability of retained austenite. When tempered at lower than 350°C, retained austenite owns good thermal stability, corresponding to relatively high impact toughness.

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