{"title":"钛 - 6Al - 4V 合金气体钨极氩弧焊过程中电流脉冲的影响研究","authors":"Adarsh Kumar, Mithlesh Kumar Mahto, Meghanshu Vashista, Mohd Zaheer Khan Yusufzai","doi":"10.1007/s11041-024-01034-0","DOIUrl":null,"url":null,"abstract":"<p>The effect of current pulsing during gas tungsten arc welding (GTAW) of titanium alloy Ti – 6Al – 4V on the structure and properties of the weld is studied. Beads on plate welds are prepared on 2-mm-thick Ti – 6Al – 4V sheets using continuous- and pulse-current GTAW(keeping the heat input the same in both conditions). When welding, an indigenously developed shielding setup is used for protection against atmospheric contamination without any external shielding. The weld characteristics are determined by visual inspection, metallographic analysis, and microhardness testing. It is established that the use of current pulsing during GTAW provides finer grains, deeper weld penetration, and increased hardness in the weld zone and in the HAZ. The weld bead has acceptable quality and a silver color on the top and root sides.</p>","PeriodicalId":701,"journal":{"name":"Metal Science and Heat Treatment","volume":"66 3-4","pages":"167 - 172"},"PeriodicalIF":0.6000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on the Effect of Current Pulsing During Gas Tungsten Arc Welding of Ti – 6Al – 4V Alloy\",\"authors\":\"Adarsh Kumar, Mithlesh Kumar Mahto, Meghanshu Vashista, Mohd Zaheer Khan Yusufzai\",\"doi\":\"10.1007/s11041-024-01034-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The effect of current pulsing during gas tungsten arc welding (GTAW) of titanium alloy Ti – 6Al – 4V on the structure and properties of the weld is studied. Beads on plate welds are prepared on 2-mm-thick Ti – 6Al – 4V sheets using continuous- and pulse-current GTAW(keeping the heat input the same in both conditions). When welding, an indigenously developed shielding setup is used for protection against atmospheric contamination without any external shielding. The weld characteristics are determined by visual inspection, metallographic analysis, and microhardness testing. It is established that the use of current pulsing during GTAW provides finer grains, deeper weld penetration, and increased hardness in the weld zone and in the HAZ. The weld bead has acceptable quality and a silver color on the top and root sides.</p>\",\"PeriodicalId\":701,\"journal\":{\"name\":\"Metal Science and Heat Treatment\",\"volume\":\"66 3-4\",\"pages\":\"167 - 172\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metal Science and Heat Treatment\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11041-024-01034-0\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal Science and Heat Treatment","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11041-024-01034-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
摘要
研究了钛合金 Ti - 6Al - 4V 气体钨极氩弧焊（GTAW）过程中电流脉冲对焊缝结构和性能的影响。在 2 毫米厚的 Ti - 6Al - 4V 板材上使用连续和脉冲电流 GTAW 焊接（两种条件下的输入热量相同）制备板材焊缝上的焊珠。焊接时，使用了本地开发的保护装置，以防止大气污染，而无需任何外部保护。焊接特性通过目视检查、金相分析和显微硬度测试来确定。结果表明，在 GTAW 焊接过程中使用脉冲电流可获得更细的晶粒、更深的焊透，并提高焊接区和热影响区的硬度。焊缝质量合格，顶部和根部呈银色。
Study on the Effect of Current Pulsing During Gas Tungsten Arc Welding of Ti – 6Al – 4V Alloy
The effect of current pulsing during gas tungsten arc welding (GTAW) of titanium alloy Ti – 6Al – 4V on the structure and properties of the weld is studied. Beads on plate welds are prepared on 2-mm-thick Ti – 6Al – 4V sheets using continuous- and pulse-current GTAW(keeping the heat input the same in both conditions). When welding, an indigenously developed shielding setup is used for protection against atmospheric contamination without any external shielding. The weld characteristics are determined by visual inspection, metallographic analysis, and microhardness testing. It is established that the use of current pulsing during GTAW provides finer grains, deeper weld penetration, and increased hardness in the weld zone and in the HAZ. The weld bead has acceptable quality and a silver color on the top and root sides.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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