Effect of rheo-diecast process on the mechanical properties of A390 alloy by serpentine channel

Kunhyok Ri; Wei-min Mao; Zhi-kai Zheng; Myongsik Kim; Yongho Sin

doi:10.1007/s12613-016-1337-6

Volume 23 Issue 10

Oct. 2016

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International Journal of Minerals, Metallurgy and Materials > 2016 > 23(10): 1177-1186. > DOI: 10.1007/s12613-016-1337-6

Kunhyok Ri, Wei-min Mao, Zhi-kai Zheng, Myongsik Kim, and Yongho Sin, Effect of rheo-diecast process on the mechanical properties of A390 alloy by serpentine channel, Int. J. Miner. Metall. Mater., 23(2016), No. 10, pp.1177-1186. https://doi.org/10.1007/s12613-016-1337-6

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Effect of rheo-diecast process on the mechanical properties of A390 alloy by serpentine channel

Kunhyok Ri^1,2),
Wei-min Mao^1), ,,
Zhi-kai Zheng¹⁾,
Myongsik Kim²⁾ and
Yongho Sin²⁾

Author Affilications

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
School of Material Engineering, Pyongyang Machinery University, Pyongyang, 999093, Democratic People's Republic of Korea

Funds:

This work was financially supported by the National Basic Research Program Priorities of China (No. 2011CB606300) and the National Natural Science Foundation of China (No. 5077400).

Received: 10 April 2016; Revised: 19 May 2016; Accepted: 24 May 2016; Available Online: 09 June 2021

Graphical Abstract

Abstract

Abstract

In this paper, the effects of rheo-diecast process parameters and T6 heat treatment on the microstructure and mechanical properties of the rheo-diecasting (RDC) semi-solid A390 alloy prepared through pure copper serpentine channel were investigated. The results indicate that the mechanical properties of the RDC samples change with the pouring temperature and injection pressure. In this case, a lower pouring temperature results in better tensile strength and elongation of the RDC A390 alloy; however, the tensile strength and elongation decrease when the pouring temperature decreases to 660°C. Higher injection pressures result in the improved mechanical properties of the RDC A390 alloy. To some extent, T6 heat treatment improves the tensile strength and ductility of the RDC A390 alloy compared to those of the non-heat treated alloy. However, when the pouring temperature and injection pressure are greater than 670°C and 70 MPa, respectively, the mechanical properties are sharply diminished.
- aluminum alloys,
- diecasting,
- rheo-casting,
- microstructure,
- mechanical properties

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