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材料工程  2013, Vol. 0 Issue (1): 16-20    DOI: 10.3969/j.issn.1001-4381.2013.01.004
  工艺 本期目录 | 过刊浏览 | 高级检索 |
新型高强Al-Zn-Mg-Cu合金的热变形行为和热加工图
陶乐晓1, 臧金鑫2, 张坤2, 陈慧琴1
1. 太原科技大学 材料科学与工程学院,太原 030024;
2. 北京航空材料研究院,北京 100095
Hot Deformation Behavior and Processing Map for New Al-Zn-Mg-Cu Alloy
TAO Le-xiao1, ZANG Jin-xin2, ZHANG Kun2, CHEN Hui-qin1
1. School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;
2. Beijing Institute of Aeronautical Materials,Beijing 100095,China
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摘要 采用热力模拟实验方法进行热压缩变形实验,研究了一种新型Al-Zn-Mg-Cu高强铝合金铸态组织在变形温度为300~450℃,应变速率为10-3~10s-1,压缩变形量为50%条件下的热变形行为,建立了该合金的热加工图。变形温度和应变速率对该合金流变应力的影响显著;实验参数条件下,该合金流变应力曲线呈现稳态动态回复型曲线特征。热加工图和组织分析表明:当应变较小时(ε=0.1),合金具备铸态组织特征,合适的热加工参数:350~450℃,应变速率10-3~10-2s-1;当应变较大时(ε=0.5),合金具备锻态组织特征,较佳的热加工参数:300~450℃,应变速率10-3~10-1s-1
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陶乐晓
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关键词 Al-Zn-Mg-Cu合金流变应力动态回复热加工图    
Abstract:The hot deformation behavior of a new Al-Zn-Mg-Cu high strength alloy was investigated by hot compression tests conducted on thermo-mechanical simulation experimental method at 300-450℃, strain rate 10-3-10s-1 and 50% height reduction. The processing maps of the alloy were established. Both of temperature and strain rate have a dramatic effect on flow stresses. The flow stress curves of the alloy present the features of steady-state dynamic recovery curve at the test conditions. The results of processing maps and microstructures show that the parameter range of 350-450℃ and 10-3-10-2s-1 is suitable to smaller strain(ε=0.1)casting structure features; and the parameter range of 300-450℃ and 10-3-10-1s-1 is suitable to larger strain(ε=0.5)forging structure features.
Key wordsAl-Zn-Mg-Cu alloy    flow stress    dynamic recovery    processing map
收稿日期: 2012-01-16      出版日期: 2013-01-20
中图分类号: 

TG146.2

 
  TG113.26

 
基金资助:

国家自然科学基金资助项目(51175361);山西省留学人员科研资助项目(2011-074)

通讯作者: 陈慧琴(1968-),女,博士,教授,博士生导师,联系地址:山西省太原市万柏林区窊流路66号太原科技大学(030024)     E-mail: chen_huiqin@126.com
作者简介: 陶乐晓(1987-),男,硕士,从事高强铝合金热加工工艺的研究,联系地址:江苏省苏州市工业区沈浒路200号(215026),E-mail:taolexiao0223@163.com
引用本文:   
陶乐晓, 臧金鑫, 张坤, 陈慧琴. 新型高强Al-Zn-Mg-Cu合金的热变形行为和热加工图[J]. 材料工程, 2013, 0(1): 16-20.
TAO Le-xiao, ZANG Jin-xin, ZHANG Kun, CHEN Hui-qin. Hot Deformation Behavior and Processing Map for New Al-Zn-Mg-Cu Alloy. Journal of Materials Engineering, 2013, 0(1): 16-20.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.01.004      或      http://jme.biam.ac.cn/CN/Y2013/V0/I1/16
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