Khodabakhshi, F. and Marzbanrad, B. and L. H., Shah and Jahed, H. and Gerlich, A. P. (2017) Friction-Stir Processing of a Cold Sprayed AA7075 Coating Layer on the AZ31B Substrate: Structural Homogeneity, Microstructures and Hardness. Surface and Coatings Technology, 331. pp. 116-128. ISSN 0257-8972. (Published)
|
PDF
fkm-2017-lhshah-Friction-stir processing of a cold sprayed1.pdf Download (67kB) | Preview |
Abstract
In this study, the cold gas dynamic spraying (CGDS) process was employed to modify the surface of AZ31B magnesium alloy with an aluminum-zinc alloy (AA7075). Friction-stir processing (FSP) was subsequently applied as a solid-state localized surface modification technique to improve the structure and integrity of the cold sprayed layer, by enhancing densification, homogeneity, and microstructural features of the as-deposited material. The structure of precipitates and grains were also refined due to the applied severe plastic deformation during FSP, which ultimately affects the indentation hardness resistance of the processed AZ31B-AA7075 bi-metallic structure. Microscopy indicated slight grain coarsening within the AZ31B substrate occurred simultaneously with refinement of the AA7075 coating, along with significant hardness improvements of ~ 80% and 30% respectively for each region in terms of Vickers hardness after FSP.
| Item Type: | Article |
|---|---|
| Additional Information: | I.F.: 2.589 Categories: MATERIALS SCIENCE, COATINGS & FILMS - SCIE (Q1); PHYSICS, APPLIED - SCIE (Q2); |
| Uncontrolled Keywords: | Aluminum; Magnesium; Dissimilar welding; Intermetallic compound; Design guideline |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Faculty/Division: | Faculty of Mechanical Engineering |
| Depositing User: | Mr. Luqman Hakim Ahmad Shah |
| Date Deposited: | 28 Nov 2017 03:44 |
| Last Modified: | 18 May 2018 04:04 |
| URI: | http://umpir.ump.edu.my/id/eprint/19199 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |