Residual stress development in cold sprayed Al, Cu and Ti coatings

被引：146

作者：

Suhonen, T. ^{[1
]}

Varis, T. ^{[1
]}

Dosta, S. ^{[2
]}

Torrell, M. ^{[2
]}

Guilemany, J. M. ^{[2
]}

机构：

[1] VTT Tech Res Ctr Finland, Espoo 02044, Finland

[2] Univ Barcelona, CPT, E-08028 Barcelona, Spain

来源：

ACTA MATERIALIA | 2013年 / 61卷 / 17期

关键词：

Cold spraying; Residual stresses; Aluminium; Copper; Titanium; BOND COATS; MICROSTRUCTURE;

D O I：

10.1016/j.actamat.2013.06.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Residual stresses play an important role in the formation and performance of thermal spray coatings. A curvature-based approach where the substrate coating system deflection and temperature are monitored throughout the coating deposition process was used to determine residual stress formation during cold spray deposition of Al, Cu and Ti coatings. The effect of substrate material (carbon steel, stainless steel and aluminium) and substrate pre-treatment (normal grit blasting, grit blasting with the cold spray system and grinding for carbon steel substrate) were studied for all coating materials with optimized deposition parameters. Mainly compressive stresses were expected because of the nature of cold spraying, but also neutral as well as tensile stresses were formed for studied coatings. The magnitudes of the residual stresses were mainly dependent on the substrate/coating material combination, but the surface preparation was also found to have an effect on the final stress stage of the coating. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：6329 / 6337

页数：9

共 22 条

[1] Neutron diffraction residual strain measurements in nanostructured hydroxyapatite coatings for orthopaedic implants [J].