室温压缩AZ31镁合金的再结晶动力学
Recrystallization Kinetics of Cold Compressed AZ31 Magnesium Alloy
摘 要
首先对AZ31镁合金进行室温压缩,然后在不同温度和保温时间下进行退火,对其组织演变和再结晶动力学进行了研究.结果表明:可以用JMAK方程对其再结晶晶粒体积分数和时间的关系进行描述;初步计算出其再结晶激活能为85.1 kJ·mol-1左右;在300,350,400,450,500 ℃退火时的再结晶完成时间分别约为1 599,380,112,40,16 min.
再结晶
动力学
激活能
AZ31 magnesium alloy
recrystallization
kinetics
activation energy
Abstract
The cold compression of AZ31 Mg-base alloy was conducted and followed by annealing at different temperatures for different holding times.Microstructure evolution and kinetics of static recrystallization was studied.The results show that the relationship between annealing time and volume fraction of the static recrystallization can be described by the JMAK equation.The activation energy was calculated to be about 85.1 kJ·mol-1 preliminarily.And the time for static recrystallization completion at 300,350,400,450,500 ℃ was 1 599,380,112,40,16 min respectively.
中图分类号 TG146.2
所属栏目 试验研究
基金项目 国家“973”计划资助项目(2007CB613700);国家“十一五”科技支撑计划资助项目(2006BAE04B03);国家大学生创新性实验资助项目
收稿日期 2007/11/1
修改稿日期 2008/5/7
网络出版日期
作者单位点击查看
备注李楠(1987-),女,河北张家口人,本科生.
引用该论文: LI Lan,LIU Tian-mo,LIU Yu,HE Shun,SUN Chao-yong. Recrystallization Kinetics of Cold Compressed AZ31 Magnesium Alloy[J]. Materials for mechancial engineering, 2008, 32(11): 10～12
李楠,刘天模,刘宇,贺舜,孙朝勇. 室温压缩AZ31镁合金的再结晶动力学[J]. 机械工程材料, 2008, 32(11): 10～12
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参考文献
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【3】刘楚明,刘子娟,朱秀荣,等.镁及镁合金动态再结晶研究进展[J].中国有色金属学报,2006,16(1):1-4.
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【5】张娅,马春江,卢晨.变形镁合金的塑性变形机制与动态再结晶[J].轻合金加工技术,2003,31(7):35-37.
【6】Doherty R D,Hughes D A,Humphreys F J,et al.Current issues in recrystallization:a review[J].Materials Science and Engineering A,1997,238:219-226.
【7】Avrami M.Kinetics of phase change I-General theory[J].J Che Phys,1939,7:1103-1115.
【8】Avrami M.Kinetics of phase change Ⅱ-Transformation time relations for random distribution of nuclei[J].J Che Phys,1940,8:212-223.
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【11】窦晓峰,鹿守理,赵辉.Q235低碳钢静态再结晶模型的建立[J].北京科技大学学报,1999,21(1):20-23.
【12】徐光,徐楚韶,赵嘉蓉.Ti-IF钢多道次变形静态再结晶研究[J].钢铁钒钛,2005,26(4):39-41.
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