Building-Up Process of Cold-Sprayed Al5056/In718 Composite Coating
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JTTEE5 24:579–586 DOI: 10.1007/s11666-014-0205-z 1059-9630/$19.00 ASM International
Building-Up Process of Cold-Sprayed Al5056/In718 Composite Coating M. Yu, H. Chen, W.-Y. Li, X.K. Suo, and H.L. Liao (Submitted August 1, 2014; in revised form November 18, 2014) A composite model was established to demonstrate the building-up process of the Al5056/In718 composite coating and to reveal a strengthened deformation of the Al5056 particle from the In718 particle. Results show that the building-up process of the Al5056/In718 composite coating is combined with the intercollision between the Al5056 particles and the In718 particleÕs impact on the Al5056 particles. The addition of In718 particle induced an extra deformation of the Al5056 particles, induced by the kinetic energy of the In718 particles.
Keywords
Al5056/In718 composite coating, cold spraying, microstructure, simulation
1. Introduction Cold spraying (CS) is a new and emerging coating technology. During the process of CS, the sprayed powder particles are accelerated to a high velocity normally ranging from 300 to 1200 m/s in a supersonic jet flow and impinge upon the substrate or already deposited coating in a solid state (Ref 1, 2). The temperature of the gas stream is always lower than the melting point of the powder during CS, and the resultant coating is formed based on an intensive plastic deformation of cold-sprayed particles, induced by the high-velocity impact (Ref 3). Solid-state deposition eliminates the deleterious effects of high temperatures and favorably promotes the use of CS for many industrial applications (Ref 4). One of cold-spray applications is to prepare a particlereinforced metal matrix composite coating, which is composed of deformed matrix particles and a reinforcement phase (Ref 5, 6). So far, composite coatings such as metal-metal (Al-Ti, Fe-Al, W-Cu, Al-Ni, Zn-Al, Cu-Cr, Al-Cu, etc.), metal and ceramics (Al-Al2O3, Al-SiC, AlTiN, Ti-SiC, Ni-Al2O3, Ni-B4C, Cu-Al2O3, Ti-SiC, etc.)
M. Yu, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Peoples Republic of China and LERMPS, Universite´ de Technologie de Belfort-Montbe´liard, Site de Se´venans, 90010 Belfort Cedex, France; and H. Chen, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Peoples Republic of China; W.-Y. Li, State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, XiÕan 710072, Peoples Republic of China; and X.K. Suo and H.L. Liao, LERMPS, Universite´ de Technologie de Belfort-Montbe´liard, Site de Se´venans, 90010 Belfort Cedex, France. Contact e-mail: [email protected]. edu.cn and [email protected]
Journal of Thermal Spray Technology
and metal-intermetallic (Al/Mg17Al12, Al-FeSiBNbCu, Mo/Terfenol-D, Fe-SmFe2, etc.) have been successfully prepared by CS (Ref 7-11). The addition of the reinforcement in the composite coating can improve the coating deposition efficiency (Ref 12), the compactness of
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