普碳钢Q235的应力-应变曲线研究  

Research on the Stress-strain Curve of Plain Carbon Steel Q235

作　　者：吕学星 李锋[1] 曹旭东[1] 赵树民[1] 

机构地区：[1]山东泰山钢铁集团有限公司,山东莱芜271100

出　　处：《山东冶金》2007年第1期41-42,共2页Shandong Metallurgy

摘　　要：利用Gleeble3500热模拟试验机,分析了普碳钢Q235在不同温度和不同变形速率条件下的应力-应变曲线特征,结果表明,在775～875℃温度范围内,变形将诱发相变,峰值应力随温度的降低而降低,随应变速率增加而增加,因此,在该范围内进行低温轧制不会导致轧制力的明显增加。The stress-strain curve of plain carbon steel Q235 at the conditions of different temperature and different deformation velocity is made by Gleeble3500 thermal simulation testing machine and its characteristic is analyzed. The results show that in 775 - 875℃ temperature range, the distortion will induce the phase transition, the peak value stress will reduce with the temperature fall and increase with the deformation velocity increase. Therefore, low temperature rolling in this temperature range will not result in obvious increase of the roll force.

关 键 词：Q235 应力-应变曲线 变形温度 变形速率 峰值应力 

分 类 号：TG142.31[一般工业技术—材料科学与工程]