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Microstructure formation mechanism and properties of a Mg-3Sn-1Mn (wt%) magnesium alloy processed by a novel semisolid continuous shearing and rolling process

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Abstract

A novel semisolid Continuous Shearing and Rolling (CSR) process for producing a Mg-3Sn-1Mn (wt%) alloy strip is developed, and the microstructure formation mechanism and properties of the Mg-3Sn-1Mn (wt%) alloy processed by this process are investigated. At a casting temperature of 690°C and a roll speed of 0.052 m·s−1, a Mg-3Sn-1Mn (wt%) alloy strip with a cross section size of 4×160 mm was produced by the proposed process. Under strong cooling and shearing actions, eruptive nucleation, direct globular grain growth and dendrite arm breakage took place during the process, which caused formations of fine spherical grains. The grain size and roundness of the Mg-3Sn-1Mn (wt%) alloy strip increased with increasing increments of the casting temperature. In this perspective, roll speed obviously affects grain shape. The ultimate tensile strength and elongation of the Mg-3Sn-1Mn (wt%) alloy strip reached 205.93 MPa and 7.2%.

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Authors and Affiliations

  1. College of Materials and Metallurgy, Northeastern University, Shenyang, 110004, China

    Ren Guo Guan, Zhan Yong Zhao, Chao Lian & Tong Cui

  2. Department of Materials Science and Engineering, Pohang University of Science and Technology, 790-784, Pohang, Korea

    Chong Soo Lee

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  1. Ren Guo Guan
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  2. Zhan Yong Zhao
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  3. Chao Lian
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  4. Tong Cui
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  5. Chong Soo Lee
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Correspondence to Ren Guo Guan.

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Guan, R.G., Zhao, Z.Y., Lian, C. et al. Microstructure formation mechanism and properties of a Mg-3Sn-1Mn (wt%) magnesium alloy processed by a novel semisolid continuous shearing and rolling process. Met. Mater. Int. 19, 33–38 (2013). https://doi.org/10.1007/s12540-013-1006-5

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  • DOI: https://doi.org/10.1007/s12540-013-1006-5

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