Metallurgical characterization and determination of residual stresses of coatings formed by thermal spraying

被引：11
|
作者：
Laribi, M
Vannes, AB
Mesrati, N
Treheux, D
机构：
[1] Ecole Natl Polytech, Dept Met, Algiers, Algeria
[2] Ecole Cent Lyon, UMR CNRS 5621, F-69131 Ecully, France
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2003年 / 12卷 / 02期
关键词：
adhesion; coatings; extensometry; interface; layer removal; metallography; microhardness; residual stresses;
D O I：
10.1361/105996303770348348
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work presents an experimental determination of residual stresses in 35CrMo4 (Euronorm) low alloyed steel substrates with thermally sprayed coatings. Two different materials were separately deposited. The first one consisted of a blend of two superalloys: Cr-Ni steel and Cr-Mn steel, designated 55E and 65E, respectively. The second material was molybdenum. In a first part, basic characteristics of the deposited layers (metallographic analysis, hardness, and adhesion) are presented. In a second part, the determination of the residual stresses, in both substrate and thermal sprayed layers is performed using an extensometric method in combination with a simultaneous progressive electrolytic polishing. The influence of a nickel-aluminum (80:20%) bond-coat and/or a post-annealing at 850 degreesC in air for 1 h is studied.
引用
收藏
页码：234 / 239
页数：6
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