蔡大勇,董海锋,廖波,关玉佐,陈礼斌,史东日

• 1:亚稳材料制备科学与技术国家重点实验室燕山大学
• 2:唐山钢铁股份有限公司

摘要(Abstract)：

采用Gleeble3500热模拟试验机研究5种微合金化低碳钢的动态应变时效行为。结果表明,在应变量0.1时,试验中的A(0.011C-0.45Cr-0.054Ti)钢、C(0.013C-0.54Cr-0.096Ti-0.004B)钢及E(0.007C-0.31Cr-0.068Ti)钢的流变应力在300~400℃出现一个峰值,在试验给定的温度和应变速率范围内,试验钢出现了明显的动态应变时效现象。与之对比,B(0.011C-0.50Cr-0.085Ti)钢及D(0.013C-0.37Cr-0.086Ti)钢的流变应力随着形变温度的升高而单调下降,没有发现明显的动态应变时效现象。可见,适量微合金化元素Cr、Ti、B的加入,可使低碳钢的动态应变时效效应大大降低,应变速率敏感性减小。

关键词(KeyWords)： 低碳钢;铁素体轧制;微合金化;动态应变时效

Abstract:

Keywords:

基金项目(Foundation): 河北省自然科学基金资助项目(E2007000374)

作者(Author): 蔡大勇,董海锋,廖波,关玉佐,陈礼斌,史东日

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