Study on Fabrication of AA4032/AA6069 Cladding Billet Using Direct Chill Casting Process

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• 作者：Xing Han ; Haitao Zhang ; Bo Shao ; Lei Li…
• 关键词：bonding strength ; casting ; cladding billet ; diffusion ; numerical simulation
• 刊名：Journal of Materials Engineering and Performance
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：25
• 期：4
• 页码：1317-1326
• 全文大小：2,651 KB
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• 作者单位：Xing Han (1)
  Haitao Zhang (1)
  Bo Shao (1)
  Lei Li (1)
  Xuan Liu (1)
  Jianzhong Cui (1)
  
  1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang, 110819, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Characterization and Evaluation Materials
  Materials Science
  Tribology, Corrosion and Coatings
  Quality Control, Reliability, Safety and Risk
  Engineering Design
  
• 出版者：Springer New York
• ISSN：1544-1024

文摘

AA4032/AA6069 cladding billet in size of φ130 mm/φ110 mm was prepared by the modified direct chill casting process, and the parametric effect on casting performance was investigated using numerical simulation. Microstructures, elements distribution, and mechanical properties of the bonding interface were examined. The results show that metallurgical bonding interface can be obtained with the optimal parameters: the casting speed of 130 to 140 mm/min, the internal liquid level height of 50 to 60 mm, and the contact height of 40 to 50 mm. The metallurgical bonding interface is free of any discontinuities due to the fact that the alloying elements diffused across the interface and formed Ni-containing phase. Tensile strength of the cladding billet reaches 225.3 MPa, and the fracture position was located in AA6069 side, suggesting that the interface bonding strength is higher than the strength of AA6069. The interfacial shearing strength is 159.3 MPa, indicating excellent metallurgical bonding.