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OALib Journal期刊
ISSN: 2333-9721
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过共析钢在过冷奥氏体形变过程中的组织超细化
Keywords: 金属材料,过共析钢,过冷奥氏体,渗碳体
Abstract:
？用gleeble1500热模拟试验机进行单轴热压缩实验,研究了过共析钢在过冷奥氏体形变过程中的组织演变规律.结果表明:过冷奥氏体变形可以抑制网状渗碳体的形成,过冷奥氏体动态相变只得到珠光体组织,在继续变形过程中珠光体发生动态球化,得到超细化(α+θ)复相组织.提高形变温度使过冷度降低,阻碍过冷奥氏体动态相变的进行;而降低应变速率使变形时间延长,有利于过冷奥氏体动态相变和珠光体动态球化的进行,但得到的超细化复相组织较为粗大.
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