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Effects of Surface Roughness on Bonding Behavior of Cold Spray Ti6Al4V Coatings

[+] Author Affiliations
Wen Sun, Adrian Wei Yee Tan, Erjia Liu

Nanyang Technological University, Singapore, Singapore

Iulian Marinescu

Rolls-Royce Singapore Pte Ltd, Singapore, Singapore

Paper No. MSEC2017-2753, pp. V002T01A001; 6 pages
doi:10.1115/MSEC2017-2753
From:
  • ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
  • Volume 2: Additive Manufacturing; Materials
  • Los Angeles, California, USA, June 4–8, 2017
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5073-2
  • Copyright © 2017 by ASME

abstract

In this study, a penitential additive manufacturing method - cold spray was used to deposit Ti6Al4V powders onto Ti6Al4V substrates with different surface roughness by using a high pressure cold spray system. The coating quality was good with limited porosity and without phase transition. Interface bonding behavior between coating and substrate was studied, which indicated that smoother substrate surface would increase the bonding strength. Bending test showed that all the coated samples started to delaminate before substrate failure and smoother surface samples could resist higher stress than the rougher surface samples.

Copyright © 2017 by ASME

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