Metals | |
Martensite Transformation and Mechanical Properties of Polycrystalline Co-Ni-Al Alloys with Gd Doping | |
Huan Liu1  Hong Li2  Jia Ju3  Yan Kang3  Zhuang Liu3  Liguo Shuai4  Chen Yan5  | |
[1] College of Mechanics and Materials, Hohai University, Nanjing 211100, China;Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huaian 223003, China;Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, China;School of Mechanical Engineering, Southeast University, Nanjing 211189, China;Zhongtian Alloy Technology CO., Ltd., Nantong 226010, China; | |
关键词: Co-Ni-Al alloy; ferromagnetic shape memory alloy; martensite transition; mechanical properties; Gd; | |
DOI : 10.3390/met8100848 | |
来源: DOAJ |
【 摘 要 】
In order to improve the mechanical properties and phase transition temperature, the influence of Gd doping on the microstructure, phase transition temperature and mechanical properties of Co35Ni32Al33 alloy was investigated. The results show that the γ+β phase was observed in the microstructure of the sample with less Gd doping and the γ phase+martensite was found with more Gd content. The phase transition temperature apparently increases with Gd doping and the phase transition temperature goes over room temperature when the Gd is 3 at.% or more. With increasing Gd doping, more γ phase appears in the sample which results in decrease in hardness. The compressive strength decreases from 2274 to 1630 MPa and the ductility increase from 4.2 to 12.9% with increasing Gd content.
【 授权许可】
Unknown