| 铸造-挤压法制备ER5356铝合金焊丝 |
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| 引用本文： | 黎天保,刘红伟,杨昭,胡雪.铸造-挤压法制备ER5356铝合金焊丝[J].轻合金加工技术,2011,39(9). |
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| 作者姓名： | 黎天保 刘红伟 杨昭 胡雪 |
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| 作者单位： | 1. 中南大学材料科学与工程学院,湖南长沙,410083
2. 中国兵器科学研究院宁波分院,浙江宁波,315103 |
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| 摘 要： | 以铁路列车用大型铝合金型材为应用背景,运用铸造-挤压法以及微合金化技术制备了与之配用的ER5356铝合金焊丝。利用OM、TEM、SEM-EDS和TG-DTA等手段,重点研究了微合金化和均匀化后焊丝合金的微观组织及性能。结果表明,添加Cr、Mn、Ti、B等微量合金元素后,晶粒细小,合金强度得到提高;经480℃24 h均匀化处理后,组织得到改善,合金中枝晶偏析基本消除,非平衡凝固形成的多相组织基本上转变成均匀化组织。焊接工艺性试验表明,该焊丝满足自动化M IG使用要求,焊缝性能良好。
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| 关 键 词： | 5356铝合金 微合金化 均匀化 组织 性能 |
Microstructure and properties of ER5356 aluminum alloy welding wire produced by casting-extrusion |
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| LI Tian-bao,LIU Hong-wei,YANG Zhao,HU Xue.Microstructure and properties of ER5356 aluminum alloy welding wire produced by casting-extrusion[J].Light Alloy Fabrication Technology,2011,39(9). |
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| Authors: | LI Tian-bao LIU Hong-wei YANG Zhao HU Xue |
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| Affiliation: | LI Tian-bao1,LIU Hong-wei2,YANG Zhao1,HU Xue1(1.School of Materials Science and Engineering,Central South University,Changsha 410083,China,2.Ningbo Branch of China Academy of Ordnance Science,Ningbo 315103,China) |
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| Abstract: | The large-type aluminum alloy profile are using widely for railway carriage recently,the ER5356 aluminum alloy welding wire to be used for carriage welding has been prepared by casting-extrusion method and micro-alloying technology.Microstructures and properties of micro-alloying and homogenized welding alloy have been investigated by OM,TEM,SEM-EDS and TG-DTA.The results show that fine grains and high strength were obtained by adding trace amount of alloy elements,such as Cr,Mn,B and Ti.Dendrite segregatio... |
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| Keywords: | 5356 aluminum alloy micro-alloying homogenization microstructure properties |
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