文献类型：期刊文献

英文题名：A review of the thermal stability of metastable austenite in steels: Martensite formation

作者：Li, Yong[1];San Martin, David[2];Wang, Jinliang[1,3];Wang, Chenchong[1];Xu, Wei[1]

机构：[1]Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China;[2]Ctr Nacl Invest Met CENIMCSIC, Mat Res Grp, Avda Gregorio Amo 8, E-28040 Madrid, Spain;[3]Guangdong Ocean Univ, Sch Mech & Power Engn, Zhanjiang 524088, Peoples R China

年份：2021

卷号：91

起止页码：200

外文期刊名：JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000697677400010)、、EI(收录号：20212010363867)、Scopus(收录号：2-s2.0-85105811610)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (Nos. 51961130389 and U1808208) and the National Key Research and Development Program (No. 2017YFB0304402) .

语种：英文

外文关键词：Austenite; Thermal stability; Martensitic transformation; Kinetic models

外文摘要：Metastable austenite plays a critical role in achieving improved combinations of high strength and high ductility/toughness in the design of advanced high-strength steels (AHSS). The thermal stability of metastable austenite determines the transformation characteristics of AHSS and thus primarily determines the microstructure evolution during complex processes, e.g., the quenching and partitioning process, to achieve the desirable microstructure. This study provides a review of the thermal stability of austenite and its influence on martensitic transformation from both experimental and theoretical modeling perspectives. From the experimental perspective, factors affecting the thermal stability are analyzed, the relative sensitivities are compared, and their corresponding mechanisms are discussed. From the theoretical modeling perspective, the most representative kinetic models that describe athermal and isothermal martensitic transformation are reviewed. The advantages, shortcomings, and applicability of each model are discussed. The systematic review of both experimental and theoretical aspects reveals critical factors in tailoring the stability of metastable austenite and, therefore, provides guidance for the design of advanced steels. (c) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals.