| 1420Al-Li合金冷轧板材的各向异性 |
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| 引用本文： | 钟利萍,郑子樵,李锡武,吴迎学,黄兰平.1420Al-Li合金冷轧板材的各向异性[J].金属热处理,2005,30(8):13-18. |
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| 作者姓名： | 钟利萍 郑子樵 李锡武 吴迎学 黄兰平 |
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| 作者单位： | 中南林学院,工业学院,湖南,长沙,410004;中南大学,材料科学与工程学院,湖南,长沙,410083;中南大学,粉末冶金国家重点实验室,湖南,长沙,410083 |
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| 基金项目： | 国家科技攻关计划项目(计国防95-YS-006) |
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| 摘 要： | 通过热处理、拉伸性能测试、金相及电镜观察分析,研究了1420Al-Li合金冷轧薄板的各向异性。结果表明,该合金在力学性能及拉伸断裂特征方面均具有明显的各向异性。经过不同的热处理,合金的各向异性程度不同:固溶水冷样比空冷样的最大强度高,各向异性程度也较明显;空冷样σb各向异性程度随时效时间延长稍有增加。合金呈现明显的各向异性是由于其较高程度的轧制变形组织和时效析出相δ′等因素综合作用的结果。
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| 关 键 词： | 1420Al-Li合金 热处理 力学性能 各向异性 断裂行为 |
| 文章编号： | 0254-6051(2005)08-0013-06 |
| 修稿时间： | 2005年3月16日 |
Anisotropy of 1420 Al-Li Alloy Cold-rolled Sheet |
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| ZHONG Li-ping,ZHENG Zi-qiao,LI Xi-wu,WU Ying-Xue,HUANG Lan-ping.Anisotropy of 1420 Al-Li Alloy Cold-rolled Sheet[J].Heat Treatment of Metals,2005,30(8):13-18. |
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| Authors: | ZHONG Li-ping ZHENG Zi-qiao LI Xi-wu WU Ying-Xue HUANG Lan-ping |
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| Affiliation: | ZHONG Li-ping~1,ZHENG Zi-qiao~2,LI Xi-wu~2,WU Ying-xue~1,HUANG Lan-ping~3 |
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| Abstract: | Anisotropy of 1420 Al-Li alloy cold-rolled sheet were studied by means of heat treatment,tensile test as well as OM and SEM observation.The result indicates that the alloy is obviously anisotropic in mechanical properties and tensile fracture.Anisotropy extents of the alloy through various heat treatment are different.The specimens after solid solution and quenched in water have higher strength and anisotropy extents than that of samples quenched in air when the aging time are the same;and the anisotropy extent of the specimens quenched in air will increase slightly with the aging time increasing.Anisotropy of 1420 Al-Li alloy is due to its highly deformed microstructure and precipitate as well as their interaction. |
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| Keywords: | 1420 Al-Li alloy heat treatment mechanical properties anisotropy fracture behavior |
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