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武淑艳,吉泽升,胡明,黄志求,田春英,吴明忠.固相再生AZ31B镁合金的组织与力学性能[J].稀有金属材料与工程(英文),2018,47(3):736~741.[wushuyan,jizesheng,huming,huangzhiqiu,tianchunying and wumingzhong.Microstructure and Mechanical properties of AZ31B magnesium alloy prepared by solid -state recycling[J].Rare Metal Materials and Engineering,2018,47(3):736~741.]
Microstructure and Mechanical properties of AZ31B magnesium alloy prepared by solid -state recycling
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Received:April 07, 2016  Revised:May 29, 2016
Key words: solid-state recycling  AZ31B magnesium alloy  extrusion temperature  extrusion ratio  mechanical property
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目);黑龙江省自然科学基金;黑龙江省教育厅项目;
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wushuyan,jizesheng,huming,huangzhiqiu,tianchunying and wumingzhong  
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      Machined chips of AZ31B magnesium alloy were consolidated by cold pressing and then hot extruding under different processing temperatures and extrusion ratios. Being compared with ingot extruding alloy, the influences of processing technology on mechanical properties were analyzed from two main aspects that involving the dynamic recrystallization microstructure and the bonding condition between chips. With the increasing extrusion temperature, the ultimate tensile strength and elongation to failure of the recycled alloys firstly increase and then decrease. The combined action of grain growth and improvement of the bonding between chips with the increasing extrusion temperature results in the variations of mechanical properties of the recycled alloy. With the increasing extrusion ratio from 4:1 to 44:1, grain is refined, and the bonding between chips is enhanced. This contribute to the increased ultimate tensile strength of recycled alloy. Whereas elongation to failure decrease when extrusion ratio is higher than 25:1 due to the significant deformation strengthening.