A high strength Mg-6Zn-1Y-1Ce alloy prepared by hot extrusion |
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| Authors: | Wenpeng Yang Xuefeng Guo |
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| Affiliation: | 1701. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, China
2701. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an, 710048, China
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| Abstract: | Microstructures and tensile properties of Mg-6Zn-1Y-1Ce alloy extruded in a temperature range between 300 °C and 400 °C were investigated. The yield strength of the material increased as the extrusion temperature decreased due to grain refinement. The yield strengths and grain sizes of extruded samples met Hall-Petch equation. The microstructure of the alloy extruded at 300 °C had a bimodal grain size distribution with an average grain size of 2.7 μm and showed a yield strength of 327 MPa with an elongation of 9%. The fine-grained microstructures were attributed to the dynamic recrystallization and the pinning effect of fine strengthening particles. |
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