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		两步贝氏体转变对中碳微纳结构钢韧性的影响
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			Influence of Two-Step Bainite Transformation on Toughness in Medium-Carbon Micro/Nano-Structured Steel
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| 图2. 中碳钢一步和两步贝氏体转变组织的SEM像 | 
| Fig.2. SEM images of medium-carbon steel for one-step (a, c, e) and two-step (b, d, f) bainitic transformations (RA/M—mixture of retained austenite and martensite, RA—retained austenite, BF—bainitic ferrite;area of dashed lines in Figs.2c and d show block RA/M) | 
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