Improving the Mechanical and Tribological Properties of NiTi Alloys by Combining Cryo-Rolling and Post-Annealing

作     者：Yong Wen Yan-Fei Wang Hao Ran Wei Wei Jun-Ming Zhang Chong-Xiang Huang Yong Wen;Yan-Fei Wang;Hao Ran;Wei Wei;Jun-Ming Zhang;Chong-Xiang Huang

作者机构：School of Aeronautics and AstronauticsSichuan UniversityChengdu 610065China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第2期

页      面：317-325页

核心收录：

学科分类：080503[工学-材料加工工程] 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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51931003) the China Postdoctoral Science Foundation(No.2020M680223) 

主　　题：NiTi alloy Phase transformation Strength and ductility Wear resistance Cryogenic rolling 

摘      要：By combining cryo-rolling and post-annealing treatments,the nanostructured NiTi alloy is produced.A diff erential scanning calorimetry measurement was used to test the eff ect of the preparation process on phase *** cryo-rolling changes the tensile fracture of NiTi alloy to a ductile ***,the recovered structure exhibits signifi cant strength improvement,while the tensile plasticity is still comparable to that of the coarse-grained *** optimized mechanical performance is due to the strengthening eff ect of refi ned microstructure and the high work hardening capability rendered by moderate dislocation ***-on-plate reciprocating dry-sliding wear test reveals that the nanostructured NiTi alloy also has enhanced wear resistance,which is primarily ascribed to the high content of residue martensite formed during *** results provide an eff ective route to optimize the mechanical and wear properties of NiTi alloys.