Simultaneously improving strength and ductility through laminate structure design in Mg–8.0Gd–3.0Y-0.5Zr alloys
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2021年第12期
论文作者：Jing Li Mengjie Zhao Li Jin Fenghua Wang Shuai Dong Jie Dong
摘 要：The laminate structure was applied to improve the mechanical properties of Mg-8.0 Gd-3.0 Y-0.5 Zr alloys.Two types of laminate structures only with different distribution positions of fine grains were produced by friction-stir processing. Results show that the trilayer structure sample exhibits an excellent strengthductility synergy compared to the homogenous structure and bilayer structure. The enhanced mechanical properties are resulted from the hetero-deformation induced（HDI） stress strengthening and strain hardening which would be enhanced by increasing the quantity of interface. These observations suggest a crucial role of the number of interfaces in designing the laminate structure.
Jing Li，Mengjie Zhao，Li Jin，Fenghua Wang，Shuai Dong，Jie Dong
National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
摘 要：The laminate structure was applied to improve the mechanical properties of Mg-8.0 Gd-3.0 Y-0.5 Zr alloys.Two types of laminate structures only with different distribution positions of fine grains were produced by friction-stir processing. Results show that the trilayer structure sample exhibits an excellent strengthductility synergy compared to the homogenous structure and bilayer structure. The enhanced mechanical properties are resulted from the hetero-deformation induced（HDI） stress strengthening and strain hardening which would be enhanced by increasing the quantity of interface. These observations suggest a crucial role of the number of interfaces in designing the laminate structure.
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