Microstructure and martensitic transformation in quaternary NiTiHfV alloy

作     者：Aleksandr V.SHUITCEV Yi REN Ze-zhong ZHANG Roman N.VASIN Bin SUN Li LI Yun-xiang TONG Aleksandr V.SHUITCEV;任艺;张泽中;Roman N.VASIN;孙斌;李莉;佟运祥

作者机构：International Joint Laboratory of Advanced Nanomaterials of Heilongjiang ProvinceCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Frank Laboratory of Neutron PhysicsJoint Institute for Nuclear Research141980DubnaRussia Center of Testing and AnalysisCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China 

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

年 卷 期：2024年第34卷第10期

页      面：3282-3294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(Nos.52201207 52271169) 

主　　题：shape memory alloys NiTiHfV H-phase Laves phase martensitic transformation 

摘      要：The effect of age hardening on the microstructure,martensitic transformation behavior,and shape memory properties of the(Ni_(50)Ti_(30)Hf_(20))_(95)V_(5)alloy was investigated by scanning electron microscopy,transmission electron microscopy,X-ray diffraction,differential scanning calorimetry,microhardness,and bending *** results demonstrate a significant influence of V addition on the microstructure of the alloy.V addition leads to the formation of a(Ni,V)_(2)(Ti,Hf)-type Laves phase,which coexists with B19 martensite at room *** at 550℃results in precipitation hardening due to the formation of nano-scale orthorhombic H-phase,with the peak hardness observed after 3 h of *** alloy at peak hardness state exhibits higher transformation strain and lower unrecovered strain compared to the solution-treated *** aged sample achieves a maximum transformation strain of 1.56%under 500 MPa.