High temperature tensile properties of directionally solidified Ni-43Ti-4Al-2Nb-2Hf alloy

作     者：Jiang, Dongwen Zheng, Lijing Zhou, Lei Pan, Liwen Tang, Xiaoxia Zhang, Hu 

作者机构：School of Materials Science and EngineeringBeijing University of Aeronautics and AstronauticsBeijing 100191China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2012年第31卷第4期

页      面：328-331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：supported by the National Natural Science Foundation of China (No. 51101003) 

主　　题：NiTi-Al based alloy directional solidification heat treatment tensile prosperity 

摘      要：By liquid metal cooling(LMC) process,the Ni-43Ti-4Al-2Nb-2Hf(%,atomic fraction) alloy was directionally solidified(DS).The microstructure and tensile properties at room and elevated temperature were *** was found that the DS process significantly improves the room temperature tensile strength,increasing by 70% compared with the as-cast *** appropriate heat treatment(HT),the average tensile strength reaches above 1900 MPa,nearly twice of the as-cast *** 800 and 900 ℃,the tensile strengths are about 308 and 169 MPa,respectively.