Q460大规格铁塔用角钢变形抗力研究  

Study on Deformation Resistance of Q460 Angle Steel for Iron Tower

作　　者：段宝美 宋卓斐[1] 冯润明[2] 刘太新[2] 尹绍江[2] 

机构地区：[1]河北联合大学教育部重点实验室,河北唐山063009 [2]唐山钢铁集团有限责任公司,河北唐山063009

出　　处：《热加工工艺》2013年第24期64-65,共2页Hot Working Technology

基　　金：国家自然基金项目(51074062)资助项目;河北省科技厅项目(12212122D)

摘　　要：利用Gleebe-3500热模拟试验机研究了Q460大规格铁塔用角钢的变形抗力变化规律,并建立了数学模型。结果显示,在各变形速度下真应力均随变形温度的升高而降低;当变形速率为0.1s-1时,从900℃开始就发生较为明显的动态再结晶;当应变速率增加到1以及10、30 s-1时,在试验的各温度下均表现为动态回复机制。The deformation resistance of Q460 for iron tower angle steel was investigated by Gleebe-3500,and then,the mathematical model was established.The results show that in all speeds,true stress decreases with deformation temperature increasing.When the deformation rate is 0.1/s,the obvious dynamic recrystallization happens from 900℃.When strain rate increases to 1/s and 10/s,30/s,in all testing temperatures generate dynamic recovery.

关 键 词：Q460 角钢 变形抗力 数学模型 

分 类 号：TG113.25[金属学及工艺—物理冶金]