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Hot-compression behavior of Al alloy 5182
  • ISSN号:2095-2899
  • 期刊名称:JOURNAL OF CENTRAL SOUTH UNIVERSITY
  • 时间:0
  • 页码:2073-2080
  • 分类:TG146.21[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学] TG146.22[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构:[1]School of Materials Science and Engineering, Central South University, Changsha 410083, China
  • 相关基金:Project(50905188) supported by the National Natural Science Foundation; Project(2012CB619500) supported by Key Basic Research Program of China
  • 相关项目:多晶铝晶粒内不均匀塑性变形研究及其数值模拟
中文摘要:

Hot-compression of aluminum alloy 5182 was carried out on a Gleeble-1500 thermo-simulator at deformation temperatureranging from 350 °C to 500 °C and at strain rate from 0.01 s 1to 10 s 1with strain range from 0.7 to 1.9. The microstructures andmacro-textures evolution under different conditions were investigated by polarized optical microscopy and X-ray diffraction analysis,respectively. The basic trend is that the hot-compression stress increases with the decrease of temperature and increase of strain rate,which is revealed and elucidated in terms of Zener-Hollomon parameter in the hyperbolic sine equation with the hot-deformationactivation energy of 143.5 kJ/mol. An empirical constitutive equation is proposed to predict the hot-deformation behavior underdifferent conditions. As deformation temperature increases up to 400 °C, at strain rate over 1 s 1, dynamic recrystallization (DRX)occurs. Cube orientation {100} 001 is detected in the recrystallized sample after hot-compression.

英文摘要:

Hot-compression of aluminum alloy 5182 was carried out on a Gleeble- 1500 thermo-simulator at deformation temperature ranging from 350 ℃ to 500 ℃ and at strain rate from 0.01 s^-1 to 10 s^-1 with strain range from 0.7 to 1.9. The microstructures and macro-textures evolution under different conditions were investigated by polarized optical microscopy and X-ray diffraction analysis, respectively. The basic trend is that the hot-compression stress increases with the decrease of temperature and increase of strain rate, which is revealed and elucidated in terms of Zener-Hollomon parameter in the hyperbolic sine equation with the hot-deformation activation energy of 143.5 kJ/mol. An empirical constitutive equation is proposed to predict the hot-deformation behavior under different conditions. As deformation temperature increases up to 400 ℃, at strain rate over 1 s^-1, dynamic recrystallization (DRX) occurs. Cube orientation { 100} (001) is detected in the recrystallized sample after hot-compression.

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期刊信息
  • 《中南大学学报:英文版》
  • 主管单位:教育部
  • 主办单位:中南大学
  • 主编:黄伯云
  • 地址:湖南长沙中南大学校本部
  • 邮编:410083
  • 邮箱:jcsu@csu.edu.cn
  • 电话:0731-88836963
  • 国际标准刊号:ISSN:2095-2899
  • 国内统一刊号:ISSN:43-1516/TB
  • 邮发代号:42-316
  • 获奖情况:
  • 2006、2008、2010“中国高校精品科技期刊”2009...
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  • 被引量:334