Tensile behavior of ultrafine-grained low carbon medium manganese steel by intercritical annealing treatment

2020 ◽  
Vol 27 (12) ◽  
pp. 1433-1445
Author(s):  
Sohail Ahmad ◽  
Zheng Han ◽  
Li-ming Fu ◽  
Huan-rong Wang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Intercritical Annealing ◽  
Annealing Treatment ◽  
Tensile Behavior ◽  
Manganese Steel ◽  
Low Carbon ◽  
Ultrafine Grained ◽  
Medium Manganese Steel

Formation of an Ultrafine-Grained Austenite-Containing Microstructure from a Cold-Rolled Medium-Manganese Steel Processed Using Intercritical Annealing

2013 ◽  
Vol 762 ◽  
pp. 31-37 ◽  
Author(s):  
Han Dong ◽  
Wen Quan Cao ◽  
Jie Shi
Keyword(s):  
Volume Fraction ◽  
Intercritical Annealing ◽  
Grain Structure ◽  
Manganese Steel ◽  
High Angle ◽  
Annealing Behavior ◽  
Misorientation Distribution ◽  
Ultrafine Grained ◽  
Medium Manganese Steel ◽  
Cold Rolled

The behavior of 60% cold-rolled medium-manganese steel (0.1C5Mn) during intercritical annealing, has been examined using various techniques. Microstructural observations showed a slight coarsening of the subgrain/grain structure during intercritical annealing, without any apparent change in the misorientation distribution. In addition, the formation of ultrafine austenite grains took place mainly at high-angle boundaries and rarely at low angle boundaries, suggesting a heterogeneous austenite nucleation process in this steel. The results indicated that the annealing behavior of cold rolled medium manganese steels is controlled by the extensive recovery of the ferrite phase and formation of austenite phase with an austenite volume fraction of ~20%. It was proposed that the segregation of manganese and carbon to high-angle boundaries promoted austenite nucleation and growth, as such segregation decreases the Gibbs energy of austenite.

The Novel Combination of Strength and Ductility in 0.4C‐7Mn‐3.2Al Medium Manganese Steel by Intercritical Annealing

2019 ◽  
Vol 90 (12) ◽  
pp. 1900228 ◽  
Author(s):  
Chao Lv ◽  
YanHua Wang ◽  
Xingmin Huang ◽  
Lei Zhang ◽  
QinQin Fu ◽  
...  
Keyword(s):  
Intercritical Annealing ◽  
Manganese Steel ◽  
The Novel ◽  
Medium Manganese Steel ◽  
Strength And Ductility
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