C-Mn钢的热塑性一直是材料学界的研究热点之一,但是产生热塑性恶化的机制一直不清楚.为了认识C-Mn钢热塑性恶化的产生机制,根据热循环引起的非平衡偏聚理论,分析了大量国内外关于C-Mn钢的热塑性试验数据,包括塑性槽的产生,塑性回复现象,高温拉伸试验过程中固溶处理温度与试验温度之间的温差效应,冷却速率对热塑性的影响以及孔洞的形成.数据分析和计算结果表明:C-Mn钢的热塑性恶化是由于杂质元素的非平衡偏聚引起的.
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