Recrystallization on Interface between NiCoCrAlYTa Coating and Nickel-Based Super-Alloy

被引：0
|
作者：
Liang Xinghua [1 ,2 ]
Zhou Kesong [2 ]
Liu Min [2 ]
Deng Changguang [2 ]
机构：
[1] Guangdong Univ Technol, Coll Mat & Energy, Guangzhou 510081, Guangdong, Peoples R China
[2] Guangzhou Res Inst Nonferrous Met, Guangzhou 510650, Guangdong, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷 / 03期
关键词：
heat treatment; peening; NiCoCrAlYTa coating; Ni-based single crystal super-alloys; recrystallization;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The NiCoCrAlYTa coating was prepared on Ni-based single crystal super-alloys by low pressure plasma spraying (LPPS). The influences of heat treatment and pre-peening on the interface recrystallization of NiCoCrAlYTa coating and nickel-based super-alloy substrate were investigated by X-ray, SEM, BES and EPXMA. It was found that cellular recrystallization occurred at the diffusion area of samples adopting the vacuum heat treatment at the temperature of 1080 degrees C, while no recrystallization appeared at the temperatures of 1000 degrees C and 850 degrees C. Recrystallization was also observed in the sample subjected by pre-peening with more than 0.2 MPa, followed toy 1080 degrees C, 6 It heat treatment and 850 degrees C, 24 h aging treatment, while no recrystallization was observed in the sample subjected by no pre-peening followed by above mentioned heat treatment. The results revealed that element Ta aggregated within cellular grains and that inter-diffusion took place and Ta-rich phases (Ni2Ta, Cr2Ta) were formed at the interface through heat treatment.
引用
收藏
页码：545 / 549
页数：5
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