U76CrRE稀土钢轨连续冷却曲线和组织性能研究
发布时间：2018-11-23 19:51
【摘要】：用Formastor-F型热膨胀仪测定了U76CrRE钢的CCT曲线;研究了冷却速率对钢组织和硬度的影响。结果表明,U76CrRE钢发生珠光体转变的临界冷速为2.00℃/s;当冷速小于等于2.00℃/s时,得到的组织为珠光体和少量铁素体;当冷速大于2.00℃/s时,转变产物中出现马氏体;实验钢的硬度随冷速的增加而增大。U76CrRE稀土钢轨在温度略高于522℃进行等温转变时可获得片间距细小的珠光体组织,硬度可满足热处理钢轨的性能要求。
[Abstract]:The CCT curve of U76CrRE steel was measured by Formastor-F thermal expansion instrument, and the effect of cooling rate on the microstructure and hardness of U76CrRE steel was studied. The results show that the critical cooling rate of pearlite transformation in U76CrRE steel is 2.00 鈩，
本文编号：2352534
[Abstract]:The CCT curve of U76CrRE steel was measured by Formastor-F thermal expansion instrument, and the effect of cooling rate on the microstructure and hardness of U76CrRE steel was studied. The results show that the critical cooling rate of pearlite transformation in U76CrRE steel is 2.00 鈩，
本文编号：2352534
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