| 热处理对磁场作用下AZ91镁合金焊接接头组织和性能的影响 |
| |
| 引用本文： | 綦秀玲,刘政军,苏允海,屈佳兴.热处理对磁场作用下AZ91镁合金焊接接头组织和性能的影响[J].焊接学报,2015,36(3):89-92. |
| |
| 作者姓名： | 綦秀玲 刘政军 苏允海 屈佳兴 |
| |
| 作者单位： | 1.沈阳工业大学 材料科学与工程学院, 沈阳 110178;辽宁工程技术大学 材料科学与工程学院, 阜新 123000 |
| |
| 基金项目： | 辽宁省教育厅资助项目(062478) |
| |
| 摘 要： | 对5 mm厚的AZ91镁板进行钨极氩弧焊的过程中,外加纵向交流磁场,并在焊后进行固溶、固溶时效和时效处理. 通过对接头显微组织和力学性能分析,研究磁场参数对热处理后AZ91焊接接头组织和性能的影响规律. 结果表明,磁场作用下的AZ91镁合金焊接接头比未施加磁场的焊接接头经固溶处理后晶粒更加细小;经固溶时效处理后更多细小弥散的β-Mg17Al12相大量在α-Mg上析出;经时效处理后析出的β-Mg17Al12相更加细小、断续、分散,且施加磁场的焊接接头比未加磁场的焊接接头热处理后硬度、强度和塑性都得到提高.
|
| 关 键 词： | 交流磁场 镁合金 热处理 钨极氩弧焊 组织和性能 |
| 收稿时间： | 2013/12/9 0:00:00 |
Effects of post weld heat treatments on microstructure and mechanical properties of AZ91 magnesium alloy joints welded by TIG method with adding magnetic field |
| |
| QI Xiuling,LIU Zhengjun,SU Yunhai and QU Jiaxing.Effects of post weld heat treatments on microstructure and mechanical properties of AZ91 magnesium alloy joints welded by TIG method with adding magnetic field[J].Transactions of The China Welding Institution,2015,36(3):89-92. |
| |
| Authors: | QI Xiuling LIU Zhengjun SU Yunhai and QU Jiaxing |
| |
| Affiliation: | 1.School of Material Science and Engineering, Shenyang University of Technology, Shenyang 110178, China;School of Material Science and Engineering, Liaoning Technical University, Fuxin 123000, China2.School of Material Science and Engineering, Shenyang University of Technology, Shenyang 110178, China |
| |
| Abstract: | AC magnetic field was employed in welding of 5 mm thick AZ91 magnesium alloy plate by TIG method. The effects of post weld heat treatment on properties and microstructure of welded joints were studied through the analysis of the microstructure, mechanical properties and corrosion resistance. The results showed that the grain size was refined for AZ91 magnesium alloy joint with solution treatment; and more dispersed β-Mg17Al12 phase precipitates in α-Mg were found for the joint with solution and aging treatment; intermittent and dispersal precipitations of β-Mg17Al12 phase was smaller for joint with aging treatment. Meanwhile, the hardness, strength and plasticity of the weld joints were improved after heat treatment. |
| |
| Keywords: | @@ |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
