采用单向拉伸测试方法, 研究了应变速率(0.001 7, 0.01, 0.1 s-1)对室温下经90°等通道转角挤压变形1道次工业纯钛室温拉伸性能的影响, 并分析了其断口形貌。结果表明: 当应变速率由0.001 7 s-1升至0.1 s-1时, 挤压后工业纯钛的断裂伸长率由17.9%减至14.9%, 抗拉强度由780 MPa增至926 MPa, 应变硬化指数由0.07降低到0.04; 拉伸断口均为韧窝型韧性断口, 且随应变速率的增加韧窝深度变浅。
所属栏目
试验研究高等学校博士学科点专项科研基金资助项目(20116120110012); 陕西省教育厅专项科研基金资助项目(12JK0430)
收稿日期
2012/10/192013/5/7
作者单位
刘晓燕:西安建筑科技大学冶金工程学院, 西安710055
赵西成:西安建筑科技大学冶金工程学院, 西安710055
杨西荣:西安建筑科技大学冶金工程学院, 西安710055
张凯:西安建筑科技大学冶金工程学院, 西安710055
解晨:西安建筑科技大学冶金工程学院, 西安710055
备注
刘晓燕(1980-), 女, 内蒙古鄂托克旗人, 讲师, 博士研究生。
引用该论文:
LIU Xiao-yan,ZHAO Xi-cheng,YANG Xi-rong,ZHANG Kai,XIE Chen.Effect of Strain Rate on Tensile Properties of Commercial Pure Titanium Processed by ECAP at Room Temperature with a 90° Die[J].Materials for mechancial engineering,2013,37(8):5～8
刘晓燕,赵西成,杨西荣,张凯,解晨.应变速率对室温下90°等通道转角挤压变形工业纯钛拉伸性能的影响[J].机械工程材料,2013,37(8):5～8
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