| TIG焊Al3Zr/A356复合材料的显微组织特征和耐腐蚀性能 |
| |
| 引用本文： | 李惠,陆圣波,孙才智,韩旭东,沃洛德梅尔,谢列茨基.TIG焊Al3Zr/A356复合材料的显微组织特征和耐腐蚀性能[J].稀有金属材料与工程,2023,52(5):1616-1623. |
| |
| 作者姓名： | 李惠 陆圣波 孙才智 韩旭东 沃洛德梅尔 谢列茨基 |
| |
| 作者单位： | 江苏科技大学 材料科学与工程学院，江苏 镇江 212000,江苏科技大学 材料科学与工程学院，江苏 镇江 212000,江苏科技大学 材料科学与工程学院，江苏 镇江 212000,深南电路股份有限公司，江苏 无锡 214142,江苏科技大学 材料科学与工程学院，江苏 镇江 212000,江苏科技大学 材料科学与工程学院，江苏 镇江 212000 |
| |
| 基金项目： | National Natural Science Foundation of China, No. 51605206 |
| |
| 摘 要： | 通过原位反应法制备了增强相含量为3%(质量分数，下同)的Al3Zr/A356铝基复合材料(AMCs)。通过X射线衍射仪、扫描电子显微镜、能谱仪和显微硬度测试，研究了不同钨极氩弧(TIG)焊焊接参数下焊接接头的显微组织和耐腐蚀性能。结果表明，当焊接电流为140 A时，焊缝成形最好，没有气孔或裂纹等焊接缺陷。焊接过程中生成细小的Al3Ti增强颗粒，呈球形和短棒状，并分散在基体中。焊接接头的硬度高于基体金属的硬度，增强颗粒的强化效果明显。随着在3.5%NaCl溶液中的浸泡时间延长，焊缝的点蚀程度增加，且大多发生在晶界和强化相周围。微区电化学实验结果表明，当焊接电流为140 A时，腐蚀电位波动小，腐蚀倾向低，耐腐蚀性能最好。
|
| 关 键 词： | 铝基复合材料 TIG焊 原位反应 耐腐蚀性能 |
| 收稿时间： | 2022/9/7 0:00:00 |
| 修稿时间： | 2023/2/8 0:00:00 |
Microstructure Characterization and Corrosion Resistance of TIG-Welded Al3Zr/A356 Composites |
| |
| Li Hui,Wang Feng,He Wei,Lu Shengbo,Sun Caizhi and Han Xudong.Microstructure Characterization and Corrosion Resistance of TIG-Welded Al3Zr/A356 Composites[J].Rare Metal Materials and Engineering,2023,52(5):1616-1623. |
| |
| Authors: | Li Hui Wang Feng He Wei Lu Shengbo Sun Caizhi and Han Xudong |
| |
| Affiliation: | School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,Shennan Circuits Co., Ltd, Wuxi 214142, China,School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China |
| |
| Abstract: | The Al3Zr/A356 aluminum matrix composites (AMCs) with 3wt% reinforcing phase were prepared by in-situ reaction method. Through X-ray diffractometer, scanning electron microscope, energy dispersive spectrometer, and microhardness tests, the microstructures and corrosion resistance of the welded joints after tungsten inert gas (TIG) welding with different welding parameters were investigated. Results show that when the welding current is 140 A, the formation of weld seam is optimal, and no welding defects, such as pores or cracks, appear. The fine Al3Ti reinforcing particles are generated during the welding process, presenting the spherical and short rod shapes, and they are dispersed in the matrix. The hardness of the welded joint is higher than that of the base metal, and the strengthening effect of the reinforcing particles becomes obvious. With prolonging the immersion duration in 3.5wt% NaCl solution, the pitting degree of weld seam is aggravated, and the pitting mainly occurs around the grain boundaries and strengthening phases. The micro-area electrochemical experiment results show that when the welding current is 140 A, the corrosion potential fluctuation is small, the corrosion tendency is low, and the corrosion resistance is optimal. |
| |
| Keywords: | aluminum matrix composites TIG welding in-situ reaction corrosion resistance |
|
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |
|
