Evolution of Microstructure and Mechanical Properties of NiCoCrAlY Coatings After High-Current Pulsed Electron Beam Irradiation

被引：1
作者：
Tian, Miao [1 ,5 ]
Li, Yuxin [1 ,2 ]
Chen, Bowen [1 ]
Wei, Shouzhen [1 ]
Wang, Jianhong [1 ]
Cai, Jie [2 ]
Peng, Lv [3 ]
Duan, Ruibin [4 ]
机构：
[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China
[2] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
[3] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
[4] North Univ China, Sch Mech Engn, Taiyuan 030051, Peoples R China
[5] North Univ China, Taiyuan, Peoples R China
来源：
MATERIALS TRANSACTIONS | 2023年 / 64卷 / 05期
基金：
中国国家自然科学基金;
关键词：
HCPEB; laser cladding; NiCoCrAlY coating; surface modification; microstructure; mechanical property; LOW-ALLOY STEEL; ENHANCEMENT; BEHAVIOR; HARDNESS; HCPEB; PHASE;
D O I：
10.2320/matertrans.MT-M2022182
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, the NiCoCrAlY coating prepared by laser cladding was modified by a high-current pulsed electron beam technique. Scanning electron microscopy and X-ray diffraction analysis were used to characterize the microstructure and composition of the coatings before and after irradiation, and then the changes in mechanical properties were revealed by comparing the hardness and friction properties of the two coatings. The results showed that the pulsed irradiation purified the coating surface, formed an evaporative recondensation layer and a plastic deformation layer, and produced a dense remelting layer with a thickness of 3-4 mu m. The remelted layer led to an increase in the hardness of the irradiated coating and a decrease in the friction coefficient and wear. The pulsed irradiation effectively improved the mechanical properties of the coatings. [doi:10.2320/matertrans.MT-M2022182]
引用
收藏
页码：1043 / 1051
页数：9
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