材料科学
奥氏体
极限抗拉强度
微观结构
退火(玻璃)
TRIP钢
冶金
锰
延展性(地球科学)
马氏体
可塑性
无扩散变换
复合材料
蠕动
作者
Sudipta Mohapatra,Karabi Das,Siddhartha Das
标识
DOI:10.1016/j.matlet.2022.132211
摘要
• The austenite phase fraction of the S_60 specimen is higher as compared to others. • Adequate TRIP effect enhances better strength-ductility in the S_60 specimen. • Tensile properties of annealed specimens are affected by pre-existing martensite. The current investigation reports the influence of annealing time on the microstructure, mechanical properties and mechanical stability of austenite in a thermo-mechanically processed medium-Mn (Fe-3.92Al-6.78Mn-1.34Si-0.18C (wt.%)) steel. The specimen annealed at 750 °C for 60 min has better tensile properties than the 30 and 180 min annealed specimen. The combination of higher austenite fraction, higher transformation ratio of austenite and optimum recrystallized fraction lead to the better tensile properties of 60 min annealed specimen. Further, the lower mechanical stability of austenite promotes the transformation-induced plasticity (TRIP) effect, which improves the ductility of the 60 min annealed specimen.
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