In this work, hot isostatic pressing (HIP) is used to reduce interior defects, adjust the microstructure, and improve the tensile properties of cold-sprayed Ti6Al4V. Optical microscope and X-ray tomography were used to characterize pore morphologies and porosity evolution. XCT reconstructions show that fully dense Ti6Al4V alloy with an equiaxed microstructure were achieved. Tensile testing shows that strength and ductility were improved as well because of enhanced diffusion and resultant metallurgical bonding.

cold spraying, fracture morphology, hot isostatic pressing, pore morphology, tensile properties, titanium-aluminum-vanadium alloy
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2019
ASM International
Topics
Fracture analysis Alpha-beta titanium alloys Hot isostatic pressing Cold spray coating Tensile properties Porosity
Issue Section:
Cold Spray
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