王程明,安治国,海岩

• 1:河钢集团钢研总院

摘要(Abstract)：

采用Gleeble 3800热模拟试验机,对高铁刹车盘用CrMoV钢在应变速率0.01～1 s~(-1)和变形温度850～1150℃下进行热压缩变形试验;分析了其流变曲线;并基于流变数据建立了其热变形方程和热加工图;用光学显微镜观察了其不同条件下的显微组织。结果表明,在高温、低应变速率条件下CrMoV钢为动态再结晶型,如1150℃、0.01 s~(-1),在低温、高应变速率条件下CrMoV钢为动态回复型,如950℃、1 s~(-1);CrMoV钢的热变形激活能为406.7781 kJ/mol;建议最佳的工艺参数范围为变形温度1080～1140℃,应变速率0.01～0.1 s~(-1)。

关键词(KeyWords)： 刹车盘钢;热压缩;动态再结晶;热加工图

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王程明,安治国,海岩

DOI: 10.13289/j.issn.1009-6264.2018-0517

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