期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 211, 期 10, 页码 1650-1657出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2011.05.003
关键词
Ultrasonic additive manufacturing; Adiabatic heating; Thermal transients; Dynamic recrystallisation; Welding; Bonding
资金
- Ohio Department of Development
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1034729] Funding Source: National Science Foundation
Dynamic recrystallisation at interfaces has been suggested as the bonding mechanism in the joining of metallic tapes, during very high power ultrasonic additive manufacturing. To understand the reasons for such occurrence of dynamic recrystallization, thermal transients from the interface regions were recorded during processing of aluminum alloy (3003 and 6061 series) and 11 000 copper tapes under similar conditions. Measurements in 3003 Al were also carried out for different processing parameters. Measured peak temperatures were seen to increase with increase in shear strength of the material and ultrasonic vibration amplitude. The observations have been rationalized based on interfacial heating at asperities due to adiabatic plastic deformation. (C) 2011 Elsevier B.V. All rights reserved.
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