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논문 기본 정보

자료유형
학술저널
저자정보
Jun Zhao (Chongqing University) Jie Fu (Chongqing University) Bin Jiang (Chongqing University) Aitao Tang (Chongqing University) Haoran Sheng (Shanghai Aerospace Equipment Manufactory) Tianhao Yang (Shanghai Aerospace Equipment Manufactory) Guangsheng Huang (Chongqing University) Dingfei Zhang (Chongqing University) Fusheng Pan (Chongqing University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.6
발행연도
2021.1
수록면
1,403 - 1,415 (13page)

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In this study, Mg-xLi (x = 0, 1, 2, 3 and 5 wt%) alloys have been extruded to examine the role of Li content on microstructuresand tensile properties. The results revealed that Li addition increased the grain size and led to the formation of the transversedirection (TD)-split texture. These were mainly attributed to the promoted DRX process and the increased activity of prismatic〈a〉 slip during extrusion. Tensile tests revealed that the elongation of Mg-5Li sheet reached ~ 22.4% along the ED. Moreover, it exhibited a higher elongation of ~ 27.3%, three times than pure Mg, along the TD. During tension along the ED,with increasing Li content, more prismatic 〈a〉 slip and preferable intergranular strain coordination ability to accommodatethe plastic strain, leading to the enhanced room-temperature ductility. In contrast, more basal 〈a〉 slips and extension twinswere also activated along the TD, which further contributed to the enhanced ductility. Therefore, the ductility of Mg sheetsat room temperature gradually improved with Li addition due to the combining effects of basal 〈a〉 slip, prismatic 〈a〉 slip,extension twin and preferable intergranular strain coordination ability.

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