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The study of preparation process of spray formed 7075/Al–Si bimetallic gradient composite plate

Published online by Cambridge University Press:  02 May 2017

Lei Yu ,
Fuyang Cao ,
Liguo Hou ,
Yandong Jia ,
Hongxian Shen ,
Haichao Li ,
Zhiliang Ning ,
Dawei Xing  and
Jianfei Sun
Lei Yu
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Fuyang Cao
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Liguo Hou
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yandong Jia
Affiliation:
Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China
Hongxian Shen
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Haichao Li
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Zhiliang Ning
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Dawei Xing
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Jianfei Sun*
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
*
a) Address all correspondence to this author. e-mail: jfsun@hit.edu.cn
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Abstract

To determine the spray forming process parameters of 7075/Al–Si bimetallic gradient composite plate with two gas atomizers, a calculation model of the plate has been established by using the finite element software ANSYS. The effects of different motion trajectory, advance speed, swing cycle and spray center distance on shape, and silicon distribution of deposited plate have been simulated by the APDL programming language. The results show that a smooth and uniform surface is obtained when motion trajectory is in a regular jaggies mode. The deposited plate varies from platform to stepped shape with a center distance increasing from 20 mm to 50 mm; meanwhile, the width of the transition zone decreases gradually. As the period increases to 8 s, the silicon distribution of each layer presents a jagged fluctuation. Both the thickness of the deposited plate and the width of the transition zone decrease as the advance speed increases, except the silicon distribution. Finally, the modeling and simulation of the co-spray formed 7075/Al–Si bimetallic gradient composite plate are validated by experimental investigations and the simulation results are in good agreement with the actual results.

Keywords

spray forminggradient materialsimulationAPDL
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 16 , 28 August 2017 , pp. 3109 - 3116
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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