Microstructure and mechanical properties of A7N01 aluminum alloy weld joints filled with ER5356 and ER5087 weld wires

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Journal of Mining and Metallurgy Section B-Metallurgy Pub Date : 2021-01-01 DOI:10.2298/jmmb210625056x

H. Xie, L. Hu, Q. Ma, W. Meng, X. Yin

引用次数: 2

Abstract

The A7N01-T5 aluminum alloy plates with a thickness of 12 mm were welded with the ER5356 and ER5087 welding wires, respectively, by the method of Metal Inert Gas (MIG) welding. The mechanical properties and microstructures of the welded joints were investigated by micro-hardness measurement, tensile test, energy disperse spectroscopy (EDS), electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM). The results showed that the tensile strength and elongation of 7N01/5087 welded joint (the 7N01 aluminum alloy plate welded with ER5087 wire) were greater than those of 7N01/5356 welded joint (the 7N01 aluminum alloy plate welded with ER5356 wires), respectively. The high strength and good elongation of 7N01/5087 welded joint were mainly attributed to microstructure refinement in the weld zone through adding Zr element to promote the nucleation of Al grains around the Al3Zr sites.

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ER5356和ER5087焊丝填充A7N01铝合金焊缝接头的组织与力学性能

用ER5356和ER5087焊丝分别焊接厚度为12 mm的A7N01-T5铝合金板，采用金属惰性气体(MIG)焊接方法。采用显微硬度测试、拉伸试验、能谱分析(EDS)、电子背散射衍射(EBSD)和透射电镜(TEM)等方法研究了焊接接头的力学性能和显微组织。结果表明:7N01/5087焊接接头(7N01铝合金板与ER5087焊丝焊接)的抗拉强度和伸长率分别大于7N01/5356焊接接头(7N01铝合金板与ER5356焊丝焊接);7N01/5087焊接接头的高强度和良好伸长率主要是由于加入Zr元素促进了Al3Zr部位周围Al晶粒的形核，从而改善了焊缝区组织。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining and Metallurgy Section B-Metallurgy 工程技术-冶金工程

CiteScore

2.00

自引率

40.00%

发文量

审稿时长

2 months

期刊介绍： University of Belgrade, Technical Faculty in Bor, has been publishing the journal called Journal of Mining and Metallurgy since 1965 and in 1997 it was divided in two independent journals dealing with mining and metallurgy separately. Since 2009 Journal of Mining and Metallurgy, Section B: Metallurgy has been accepted in Science Citation Index Expanded. Journal of Mining and Metallurgy, Section B: Metallurgy presents an international medium for the publication of contributions on original research which reflect the new progresses in theory and practice of metallurgy. The Journal covers the latest research in all aspects of metallurgy including hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, solidification, mechanical working, solid state reactions, materials processing, surface treatment and relationships among processing, structure, and properties of materials.