First-Principle Calculation on Critical Velocity for Cu and Al Cold-Spray Bonding

13 Pages Posted: 5 Oct 2020

See all articles by Chengsong Zhang

Chengsong Zhang

Osaka University - Joining and Welding Research Institute

Qian Wang

Osaka University - Joining and Welding Research Institute

Xiaotao Luo

Xi'an Jiaotong University (XJTU) - State Key Laboratory for Mechanical Behavior of Materials

Ninshu Ma

Osaka University - Joining and Welding Research Institute

Abstract

The first-principles calculation with a newly developed high-efficient computing method was firstly applied to prediction of critical velocity for Cu/Al cold-spray bonding without any empirical parameters. An excellent agreement between predicted values and experimental values was obtained. The bonding mechanism of cold-spray was clarified by analyzing the atomic response in displacement during cold-spray process. A mixed bonding mechanism of adiabatic shear instability and pressure-release was confirmed. The computing method could be popularized to extensive applications in critical velocity prediction.

Keywords: Critical velocity, Cold-spray, bonding mechanism, First-Principles Calculation

Suggested Citation

Zhang, Chengsong and Wang, Qian and Luo, Xiaotao and Ma, Ninshu, First-Principle Calculation on Critical Velocity for Cu and Al Cold-Spray Bonding. Available at SSRN: https://ssrn.com/abstract=3688748 or http://dx.doi.org/10.2139/ssrn.3688748

Chengsong Zhang (Contact Author)

Osaka University - Joining and Welding Research Institute ( email )

1-1 Yamadaoka
Suita
Osaka, 565-0871
Japan

Qian Wang

Osaka University - Joining and Welding Research Institute

1-1 Yamadaoka
Suita
Osaka, 565-0871
Japan

Xiaotao Luo

Xi'an Jiaotong University (XJTU) - State Key Laboratory for Mechanical Behavior of Materials

Xi'an
China

Ninshu Ma

Osaka University - Joining and Welding Research Institute

1-1 Yamadaoka
Suita
Osaka, 565-0871
Japan

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