Haidong Sun a, Yuhui Wang a, Zuohua Wang a, Ning Liu b, Yan Peng a, Xiujuan Zhao c, Ruiming Ren c, Hongwang Zhang a,*( )
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Fig. 2.. Optical micrographs of the starting and the quenched samples. (a, b): Fe-0.2C steel, (c, d): Fe-0.8C steel. Dotted line in (b) encloses martensite packets (indicated by the thick lines) and blocks within a prior austenite grain.
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