Influence of post ageing on creep behaviour of aluminized Ni-based single crystal superalloy prepared by low-activity high-temperature

被引：8

作者：

Latief, F. H. ^{[1
]}

Kakehi, K. ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Mech Engn, Hachioji, Tokyo 1920397, Japan

来源：

VACUUM | 2014年 / 109卷

关键词：

Ni-based superalloys; Ageing; Creep; Coatings; Microstructure; NICKEL; MICROSTRUCTURES; DEFORMATION; EVOLUTION; PHASE;

D O I：

10.1016/j.vacuum.2014.07.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of post ageing treatment on creep behaviour of aluminide coating prepared by low-activity high-temperature on a Ni-based single crystal superalloy was investigated. The results showed that the aluminide coating reduced the creep behaviour of Ni-based single crystal superalloy. The decrease in creep behaviour may be due to the change in microstructures after aluminizing treatment. However, the post ageing treatment at low temperature has successfully improved the creep behaviour of aluminized Ni-based single crystal superalloy. The increase in creep behaviour of aluminized Ni-based single crystal superalloy after post ageing treatment was due to the formation of fine spherical carbides which are distributed in the substrate of Ni-based single crystal superalloy. These fine spherical carbides are able to hinder the dislocation movement and suppress the amount of topologically close-packed phase. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：157 / 161

页数：5

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