In this paper Cu and Ti coatings were deposited by cold spray process. The influence of heat treatment temperature on the coating microstructure and mechanical property were investigated. The experiment results show that heat treatment temperature give significant influence on Cu coating microstructure. The Cu coating with stress-strain characteristic comparable to the bulk material can be obtained at the heat treatment temperature of 500°C. However, the Ti coatings exhibit no significant change on the stress-strain characteristics against the heat treatment temperature although the coating microstructure changed. The different effects of heat treatment to the Cu and Ti coating mechanical property were discussed by combining the change of coating microstructure.
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