| 多道次高转速搅拌摩擦加工对AZ31合金加工区显微组织演变、腐蚀行为和力学性能的影响（英文） |
| |
| 引用本文： | 刘奋军,姬妍,白艳霞. 多道次高转速搅拌摩擦加工对AZ31合金加工区显微组织演变、腐蚀行为和力学性能的影响（英文）[J]. 中国有色金属学会会刊, 2020, 30(12): 3263-3273. DOI: 10.1016/S1003-6326(20)65459-0 |
| |
| 作者姓名： | 刘奋军 姬妍 白艳霞 |
| |
| 作者单位： | 1. 榆林学院能源工程学院;2. 榆林学院榆林市金属基复合材料与再制造技术重点实验室 |
| |
| 摘 要： | 采用EBSD、TEM、SEM、电化学工作站和电子万能实验机研究多道次高转速搅拌摩擦加工对AZ31合金加工区显微组织演变、腐蚀行为和力学性能的影响。结果表明,加工区平均晶粒尺寸显著细化。增加加工道次,加工区晶粒粗化,而β-Al12Mg17析出相增多并变得更加连续和均匀。与AZ31合金相比,加工区拉伸性能变化轻微,但是耐腐蚀性能得到显著提升。4道次高转速搅拌摩擦加工制备的合金其加工区自腐蚀电位由-1.56 V增加至-1.19 V,而自腐蚀电流从1.55×10-4 A减小至5.47×10-5 A。
|
| 关 键 词： | AZ31合金 高转速 多道次搅拌摩擦加工 显微组织演变 耐腐蚀性 力学性能 |
| 收稿时间： | 2020-03-01 |
Influence of multipass high rotating speed friction stir processing on microstructure evolution,corrosion behavior and mechanical properties of stirred zone on AZ31 alloy |
| |
| Affiliation: | 1. College of Energy Engineering, Yulin University, Yulin 719000, China;2. Yulin Key Laboratory of Metal Matrix Composites and Remanufacturing Technology, Yulin University, Yulin 719000, China;1. Department of Mechanical Engineering, St. Joseph’s College of Engineering& Technology, Choondacherry,686575, Kerala, India;2. Department of Mechanical Engineering, Gurunanak Institutions, Technical Campus, Ibrahimpatnam, 501506 Telangana, India;1. National Engineering Research Center of Near-net-shape Forming for Metallic Materials, Guangdong Key Laboratory for Advanced Metallic Materials Processing, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3;1. International Joint Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China;2. School of Mechanical and Automotive Engineering, Nanyang Institute of Technology, Nanyang 473004, China;3. National Engineering Research Center for Magnesium Alloys, Chongqing, 400044, China |
| |
| Abstract: | The influence of multipass high rotating speed friction stir processing (FSP) on the microstructure evolution, corrosion behavior, and tensile properties of the stirred zone (SZ) was investigated by EBSD, TEM, SEM, electrochemical workstation and electronic universal testing machine. The mean grain size of the SZ is significantly refined, and it increases with the increase of the processing pass. In addition to an obvious increase in the number, the distribution of β-Al12Mg17 precipitates also becomes more uniform and dispersed with increasing the processing pass. Compared with the as-received AZ31 alloy, the tensile properties of the SZ are hardly improved, but the corrosion resistances are significantly enhanced. The corrosion potential of the SZ prepared by 4-pass FSP is increased from −1.56 V for the unprocessed AZ31 alloy to −1.19 V, while the corrosion current is decreased from 1.55×10−4 to 5.47×10−5 A. |
| |
| Keywords: | AZ31 alloy high rotating speed multipass friction stir processing microstructure evolution corrosion resistance mechanical properties |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
