变形速率对含磷高强无间隙原子钢高温变形行为的影响
Effect of Deformation Rate on Deformation Behavior of High Strength IF Steel Containing P at High Temperature
摘 要
采用Gleeble 3800型热模拟试验机测定了含磷高强无间隙原子钢(IF钢)在变形温度为950,850 ℃,单道压缩变形量为50%,变形速率为0.01,0.1,1,10 s-1时的应力应变曲线,对其变形行为进行了分析.结果表明：应变速率为10 s-1,变形量为50%时,应力-应变曲线仅为动态回复型,不因温度的变化而改变类型;当变形温度为950 ℃时,变形速率越高,铁素体晶粒越大;而当变形温度为850 ℃时,这种差别比较小.说明在变形速率不太高的情况下,变形温度是影响奥氏体或铁素体晶粒尺寸的主要因素.
热模拟
变形速率
应力-应变曲线
high-strength IF steel
thermal simulation
strain rate
strain-stress curve
Abstract
High-strength IF steel with P addition was studied.The strain-stress curves were measured using Gleeble 3800 thermal mechanical simulator at strain rates of 0.01,0.1,1,10 s-1 with 50% reduction and at deformation temperatures of 950 ℃ and 850 ℃.The single pass compression test shows that the mode of stress-strain curves is dynamic recovery with strain rate 10 s-1 and 50% reduction,and it do not change with temperature.The grain is large with the strain rate increasing at deformation temperature of 950 ℃,but difference is small at deformation temperature of 850 ℃.The deformation temperature is the main factor which affects the grain size of austenite or ferrite when the strain rate is not changed largely.
中图分类号 TG142
所属栏目
基金项目 国家自然科学基金资助项目(50504007)
收稿日期 2005/12/22
修改稿日期 2006/3/22
网络出版日期
作者单位点击查看
备注刘英义(1965-),女,辽宁盖州人,工程师.
引用该论文: LIU Ying-yi,ZHANG Hong-mei,JIANG Qi-wu. Effect of Deformation Rate on Deformation Behavior of High Strength IF Steel Containing P at High Temperature[J]. Materials for mechancial engineering, 2007, 31(1): 23～25
刘英义,张红梅,蒋奇武. 变形速率对含磷高强无间隙原子钢高温变形行为的影响[J]. 机械工程材料, 2007, 31(1): 23～25
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参考文献
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