| 超细亚晶粒铝合金的强化机理 |
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| 引用本文： | 徐红星,程晓农,许晓静,宋刚,莫纪平. 超细亚晶粒铝合金的强化机理[J]. 江苏大学学报(自然科学版), 2011, 32(1): 51-55. DOI: 10.3969/j.issn.1671-7775.2011.01.011 |
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| 作者姓名： | 徐红星 程晓农 许晓静 宋刚 莫纪平 |
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| 作者单位： | 1. 江苏大学,材料科学与工程学院,江苏,镇江,212013
2. 江苏大学,机械工程学院,江苏,镇江,212013 |
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| 基金项目： | 江苏省自然科学基金重点资助项目(BK2007707); 江苏省科技成果转化专项基金资助项目(BA2005054) |
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| 摘 要： | 在室温下对经过时效处理的2024铝合金实施了等效应变为0.5的等通道转角挤压(ECAP)变形,将形变强化、时效强化和晶界细化强化有机结合,制备出超细亚晶粒铝合金,其硬度、屈服强度、伸长率分别约达100 HV,130 MPa和31%.分析探讨了超细亚晶粒2024铝合金的强化机理.研究结果表明,屈服强度的实测数值和理论计算...
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| 关 键 词： | 铝合金 超细亚晶粒 等通道转角变形 亚晶界强化 位错强化 |
Strengthening mechanism of ultra-fine sub-grained Al alloy |
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| Xu Hongxing,Cheng Xiaonong,Xu Xiaojing,Song Gang,Mo Jiping. Strengthening mechanism of ultra-fine sub-grained Al alloy[J]. Journal of Jiangsu University:Natural Science Edition, 2011, 32(1): 51-55. DOI: 10.3969/j.issn.1671-7775.2011.01.011 |
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| Authors: | Xu Hongxing Cheng Xiaonong Xu Xiaojing Song Gang Mo Jiping |
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| Affiliation: | Xu Hongxing1,Cheng Xiaonong1,Xu Xiaojing2,Song Gang1,Mo Jiping2(1.School of Materials Science and Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China,2.School of Mechanical Engineering,China) |
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| Abstract: | Equal-channel angular pressing(ECAP) of the 2024 Al alloy treated by overaging treatment was performed at room temperature with an imposed equivalent strain of 0.5.The hardness of 100 HV,yield strength of 130 MPa and elongation rate of 31% aluminum alloys were obtained for the ECAPed alloy.The strengthening mechanism was analysed.The results show that the yield strength of measured and calculated values agree very well.It is proved that the yield strength of 2024 aluminum alloy by overaging solution after E... |
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| Keywords: | aluminum alloy ultra-fine sub-grain equal-channel angular pressing sub-grain boundary strengthening dislocation strengthening |
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