Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Effect of Thermal Energy of In-Flight Particles on Impacting Behavior for NiTiZrSiSn Bulk Metallic Glass during Kinetic Spraying

비행입자의 열 에너지에 따른 NiTiZrSiSn 벌크 비정질 분말의 적층 거동

  • Yoon, Sang-Hoon (Kinetic spray coating laboratory, Division of Materials Science & Engineering, College of Engineering, Hanyang University) ;
  • Kim, Soo-Ki (Kinetic spray coating laboratory, Division of Materials Science & Engineering, College of Engineering, Hanyang University) ;
  • Lee, Chang-Hee (Kinetic spray coating laboratory, Division of Materials Science & Engineering, College of Engineering, Hanyang University)
  • 윤상훈 (한양대학교 신소재공학부 저온 분사 코팅 연구실) ;
  • 김수기 (한양대학교 신소재공학부 저온 분사 코팅 연구실) ;
  • 이창희 (한양대학교 신소재공학부 저온 분사 코팅 연구실)
  • Published : 2007.06.30
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Abstract

Mechanical and thermomechanical properties of the bulk metallic glass (BMG) are so unique that the deformation behavior is largely dependent on the temperature and the strain rate. Impacting behavior of NiTiZrSiSn bulk metallic glass powder during kinetic spraying was investigated in this study. Considering the impact behavior of the BMG, the kinetic spraying system was modified and attached the powder preheating system to make the transition from the inhomogeneous deformation to the homogeneous deformation of impacting BMG particle easy BMG splat formation is considered from the viewpoint of the adiabatic shear instability. It is suggested that the impact behavior of bulk metallic glass particle is determined by the competition between fracture and deformation. The bonding of the impacting NiTiZrSiSn bulk amorphous particle was primarily caused by the temperature-dependent deformation and fracture (local liquid formation) behavior.

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