Affiliation:
1. Collaborative Innovation Center of Iron and Steel Common Technology University of Science and Technology Beijing Beijing 100083 China
2. Beijing Shougang Co., Ltd. Beijing 100041 China
Abstract
Herein, high‐strength medium Mn steel is obtained by intercritical annealing and quenching processes. Experimental steel with a chemical composition of Fe–0.2C–8.0Mn–1.6Si–1.3Al (wt%) is treated. The microstructures of the obtained samples comprise ferrite/martensite and retained austenite (RA) phases. The partitioning behavior of carbon and manganese during the intercritical annealing process is simulated using DICTRA. The sample annealed at 700 °C for 10 min has the best mechanical properties, with a product of strength and elongation as high as 47.25 GPa%. The deformation response of the RA is studied. The γ→α′ transformation mainly occurs in the early stage of deformation, whereas the γ→ε→α′ transformation mainly occurs in the later stage of deformation. The stress is mainly distributed at the deformed martensite and RA, and most of the stress is concentrated at the low‐angle grain boundary. During the deformation process, both the Kurdjumov–Sachs interface and the Nishiyama–Wasserman interface between the RA and deformed martensite decrease, but the Kurdjumov–Sachs interface decreases more obviously.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献