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,2018,47(3):736~741.[wushuyan,jizesheng,huming,huangzhiqiu,tianchunying,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.]
固相再生AZ31B镁合金的组织与力学性能
投稿时间:2016-04-07  修订日期:2016-05-29
中文关键词:  固相再生  AZ31B镁合金  挤压温度  挤压比  力学性能
基金项目: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;
中文摘要:
      在不同的挤压温度和挤压比下,将AZ31B镁合金机加屑冷压后热挤压固结而再生镁合金。与铸锭挤压合金对比,从动态再结晶组织与屑间结合情况两个主要方面分析了加工工艺对再生合金力学性能的影响。随着挤压温度升高,再生合金的极限抗拉强度和延伸率先增加而后降低。随挤压温度升高,晶粒长大与屑间结合增强的相反作用共同导致了再生合金力学性能的变化。当挤压比从4:1 增加到 44:1,晶粒细化且屑间结合增强,使再生合金的抗拉强度增加。而当挤压比高于25:1时,由于显著的形变强化作用导致延伸率下降。
Microstructure and Mechanical properties of AZ31B magnesium alloy prepared by solid -state recycling
英文关键词:solid-state recycling  AZ31B magnesium alloy  extrusion temperature  extrusion ratio  mechanical property
英文摘要:
      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.
作者单位E-mail
武淑艳 佳木斯大学 材料科学与工程学院 wsy_hit@sina.com 
吉泽升 哈尔滨理工大学 wsy_hit@sina.com 
胡明 佳木斯大学 材料科学与工程学院  
黄志求 佳木斯大学 材料科学与工程学院  
田春英 佳木斯大学 材料科学与工程学院  
吴明忠 佳木斯大学 材料科学与工程学院  
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