| 新型Al-12．7Si-0．7Mg焊丝及其熔敷金属组织与性能研究 |
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| 引用本文： | 王浩,何长树,王东,赵骧,左良.新型Al-12．7Si-0．7Mg焊丝及其熔敷金属组织与性能研究[J].中国材料科技与设备,2014(3):55-58. |
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| 作者姓名： | 王浩 何长树 王东 赵骧 左良 |
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| 作者单位： | 东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳110819 |
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| 基金项目： | 国家科技支撑计划项目（节约型高硅变形铝硅合金生产工艺开发与示范,2009BAE80B01）;国家科技支撑计划项目（高速列车关键材料及部件可靠性,2009BAG12A07-B02）;国家自然科学基金资助项目（51071040） |
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| 摘 要： | 借助OM、SEM、TEM和拉伸实验机，研究了新型Al-12．7Si—0．7Mg焊丝及其熔敷金属的组织和性能，结果表明：密集排布的针片状Si相经热挤压和连续冷拉拔后破碎为细小颗粒并弥散分布，当拉拔变形量为77％时，焊丝的组织和拉伸性能较优，经固溶和时效热处理后焊丝熔敷金属拉伸性能显著提高，Al-12．7Si—0．7Mg焊丝合金可热处理强化。
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| 关 键 词： | 铝硅合金 焊丝 熔敷金属 显微组织 拉伸性能 |
Research on Microstructure and Tension Properties of the Novel Al-12.7Si-0.7Mg Alloy Welding Wire and the Deposited Metal |
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| WANG Hao,HE Chang-shu,WANG Dong,ZHAO Xiang,ZUO Liang.Research on Microstructure and Tension Properties of the Novel Al-12.7Si-0.7Mg Alloy Welding Wire and the Deposited Metal[J].Chinese Materials Science Technology & Equipment,2014(3):55-58. |
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| Authors: | WANG Hao HE Chang-shu WANG Dong ZHAO Xiang ZUO Liang |
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| Affiliation: | (Key Laboratory of Anisotropy and Texture of Materials. (Ministry of Education), Liaoning, Shenyang, 110819, China) |
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| Abstract: | In this paper, microstructures and tension properties of the novel Al-12. 7Si-0. 7Mg alloy welding wire and the deposited metal were investigated using the OM, SEM, TEM and the tension test machine. The results showed that the closely spaced needle-like silicon phases were broken down into fine Si particles and were distributed uniformly after the hot extrusion and cold drawing processes. The finished welding wire could obtain excellent tension properties and a fine micro- structure when the drawing deformation was 77 %. The Al-12.7Si-0. 7Mg weld metal proved to be heat-treatable and the tension properties of it improved significantly after solution and aging treatments. |
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| Keywords: | Aluminum-silicon alloy Welding wire Deposited metal Microstructure Tension properties |
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