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《Hot Working Technology》 2009-11
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Research Development About SPD Extrusion Technology of Wrought Magnesium Alloys with High Performance

ZHANG Dingfei1,2, LIU Jiehui2, HU Hongjun2, TAN Xiaoming2 (1. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China; 2. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China)  
The wrought magnesium with high performance has been studied and used broadly in recent years. The qualified billets of wrought magnesium are supplied by SPD technology. The latest developments of the SPD technologies of magnesium alloys are introduced, such as the ECAE, CEC, S-type lateral extrusion and HRE are briefly described. Three types of mechanism of grain refinement for SPD are analyzed, including recrystallization, twin refining and shear-zone refining. Existing problems and challenges are indicated and the solutions are proposed.
【Fund】: 国家973项目(2007CB613700);; 国家十一五科技支撑计划项目(2006BAE04B03);; 重庆市自然科学基金重点项目(CSTC2005BA4015);; 重庆市科技攻关重大专项(CSTC2005CF4001)
【CateGory Index】: TG376
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