| 热处理对2519铝合金接头组织及性能的影响 |
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| 引用本文： | 洪张飞,国旭明,杨成刚,张劲松,张亚东.热处理对2519铝合金接头组织及性能的影响[J].材料研究学报,2006,20(2):171-175. |
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| 作者姓名： | 洪张飞 国旭明 杨成刚 张劲松 张亚东 |
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| 作者单位： | 1. 中国科学院金属研究所,沈阳,110016
2. 沈阳科仪视讯系统工程有限公司,沈阳,110003 |
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| 摘 要： | 研究了焊后时效及固溶＋时效热处理对2519铝合金焊接接头组织和力学性能的影响．结果表明，时效处理后，处于欠时效态的焊缝析出强化相增加，硬度升高，而过时效态的热影响区软化区组织和硬度没有明显变化，焊接接头的强度略微提高，塑性下降．固溶＋时效处理后，焊缝中网状共晶减少，焊缝和热影响区软化区内的析出相形态变为细小的针状，且数量增加，焊缝金属硬度明显提高，热影响区的软化现象消失，焊接接头的强度和塑性显著增加．
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| 关 键 词： | 金属材料 2519铝合金 焊接接头 焊后热处理 |
| 文章编号： | 1005-3093(2006)02-0171-05 |
| 收稿时间： | 12 12 2005 12:00AM |
| 修稿时间： | 01 17 2006 12:00AM |
Effect of heat treatment on the microstructures and properties of welded joint of 2519 aluminum alloy |
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| HONG Zhangfei,GUO Xuming,YANG Chenggang,ZHANG Jinsong,ZHANG Yadong.Effect of heat treatment on the microstructures and properties of welded joint of 2519 aluminum alloy[J].Chinese Journal of Materials Research,2006,20(2):171-175. |
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| Authors: | HONG Zhangfei GUO Xuming YANG Chenggang ZHANG Jinsong ZHANG Yadong |
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| Abstract: | Effect of both post-weld aging and solid solution plus aging treatment on the mi- crostructures and mechanical properties of welded joint of 2519 aluminum alloy was investigated.The results showed that after aging treatment more precipitates formed in ill-aged weld metal,hardness of which increased as a result.However,microstructure and hardness of soft heat-affected zone(HAZ)that suffered over-aging didn't change obviously.The aging treatment increased strength of the welded joint a little and reduced ductility.After solid solution plus aging treatment the continuous and netlike eutectics in weld metal were decreased.At the same time a great number of needlelike precipitates emerged in both weld metal and soft HAZ,which increased hardness of weld metal farther,eliminated softening of HAZ, enhanced strength and ductility of welded joint. |
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| Keywords: | metallic materials 2519 Al alloy welded joint post-weld heat treatment |
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