High-temperature confocal laser scanning microscopy analysis of phase transformation of steels:a review  

作　　者：Li-bo Wang Xiang-liang Wan Cheng-yang Hu Guang Xu Guang-qiang Li 

机构地区：[1]Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan,430081,Hubei,China [2]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan,430081,Hubei,China

出　　处：《Journal of Iron and Steel Research International》2025年第2期353-363,共11页钢铁研究学报(英文版)

基　　金：support received from the National Natural Science Foundation of China(52274305,U20A20277);the Hubei Province key research and development project(2022BAA021).

摘　　要：High-temperature confocal laser scanning microscopy(HT-CLSM)is considered as a powerful tool for in situ observation of the phase transformation of steels at elevated temperatures.It breaks the limitation that conventional approaches on this aspect can only post-mortem the microstructure at room temperature.The working principle and major functions of HT-CLSM in initial are introduced and the utilization in details with HT-CLSM is summarized,including the behaviors of melting-solidifying,austenite reversion,as well as the austenite decomposition(formation of Widmanstätten,pearlite,acicular ferrite,bainite and martensite)in steels.Moreover,a serie of HT-CLSM images are used to explore the growth kinetic of phase at elevated temperatures with additional theoretical calculation models.Finally,the in situ HT-CLSM observations of phase transformation,combined with post-mortem electron backscatter diffraction analysis,is also summarized to elucidate the crystallographic evolution.

关 键 词：STEEL In situ observation HT-CLSM Microstructure Phase transformation 

分 类 号：TG1[金属学及工艺—金属学]