Microstructural evolution during hot and cold deformation of Ti-36Nb-2Ta-3Zr-0.35O alloy

作     者：张卫东 刘咏 吴宏 刘彬 陈紫瑾 汤慧萍 Wei-dong ZHANG;Yong LIU;Hong WU;Bin LIU;Zi-jin CHEN;Hui-ping TANG

作者机构：中南大学粉末冶金国家重点实验室长沙410083 西北有色金属研究院金属多孔材料国家重点实验室西安710012 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2016年第26卷第5期

页      面：1310-1316页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(2014CB644002)supported by the National Key Fundamental Research and Development Project of China Project(51301203)supported by the National Natural Science Foundation of China Project(2015CX004)supported by the Innovation-driven Plan in Central South University,China supported by the Outstanding Graduate Project of Advanced Non-ferrous Metal Structural Materials and Manufacturing Collaborative Innovation Center,China 

主　　题：gum metal hot forge cold swage microstructure dislocation-free stress-induced martensitic transformation 

摘      要：The Ti-36Nb-2Ta-3Zr-0.350 （mass fraction, %） （TNTZO） alloy was produced by cold isostatic pressing and sintering from elemental powders, followed by hot and cold deformation. The effects of deformation process on microstructures and mechanical properties were investigated using the SEM, TEM, OM and the universal material testing machine. Results show that the alloy can be easily hot forged and cold swaged due to the fine-grained microstructure. Only after cold swaging by 85%, the alloy shows the typical ＂marble-like＂ structure. And thecold deformation is accompanied by stress-induced a＂ phase transformations. Moreover, both the strength and the ductility of the alloy are significantly improved by hot and cold working.