新型低成本钛合金的热变形行为研究  

Hot Deformation Behavior of a Novel Low-cost Titanium Alloy

作　　者：胡金宝 牟义强 张洺川 姚楠 王枫 覃美玲 徐勤思 Hu Jinbao;Mu Yiqiang;Zhang Mingchuan;Yao Nan;Wang Feng;Qin Meiling;Xu Qinsi(Department of Civil Aviation,Shenyang Aerospace University;Panzhihua Wuyue Technology Co.,Ltd.)

机构地区：[1]沈阳航空航天大学民用航空学院 [2]攀枝花市午跃科技有限公司

出　　处：《特种铸造及有色合金》2023年第8期1132-1136,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51871220);辽宁省自然科学基金资助项目(LACT-007)。

摘　　要：针对一种新型低成本钛合金Ti-5Al-1.5Mo-1.8Fe在应变速率范围为0.0002~0.2 s^(-1),变形温度在1123~1273 K之间,工程应变量为50%条件下的热变形行为进行了研究。根据真应力-真应变曲线分析变形参数对流变应力的影响,建立了该合金的Arrhenius本构模型。基于动态材料学模型,给出Ti-5Al-1.5Mo-1.8Fe合金在真应变为0.92下的加工图,以优化相应的工艺参数。The hot deformation behavior of a novel low-cost titanium alloy Ti-5Al-1.5Mo-1.8Fe in the strain rate range of 0.0002~0.2 s^(-1) and temperature range of 1123~1273 K was evaluated at 50% of deformation degree.The effects of deformation parameters on flow stress of the alloy was analyzed according to the true stress-strain curves,and the constitutive equation was established.On the basis of the dynamic material mode,the processing maps of Ti-5Al-1.5Mo-1.8Fe alloy were constructed at the strain of 0.92 to optimize the corresponding parameters.

关 键 词：低成本钛合金 热变形行为 本构方程 加工图 

分 类 号：TG146.23[一般工业技术—材料科学与工程]