摩擦焊接对纯钛/A5083铝合金接头特性的影响。报告2:接头界面区冶金性能

Materials Science Research International Pub Date : 1995-09-15 DOI:10.2472/jsms.44.504appendix_188

A. Fuji, K. Ameyama, T. North, M. Kimura

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引用次数: 5

摘要

研究了纯钛(Ti)与铝镁合金(A5083)基材焊接时异种摩擦接头界面区域的冶金性能。在距接头界面1mm处的硬度值高于基体Ti和A5083。光学显微镜、x射线衍射分析、扫描电镜(SEM)及eds分析均未发现接头界面处存在过渡层。然而，通过对接头界面区域的透射电镜(TEM)观察证实，在接合过程中产生了厚度不超过200nm的金属间相。通过TEM-EDS分析，确定金属间相为Mg2A13、Al3Ti和ƒÑ-Al (Ti2Mg 3Al18)。结果表明:选择有利于薄过渡层和金属间层形成的连接参数，可以产生具有满意力学性能的不同连接。

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EFFECT OF FRICTION WELDING ON CHARACTERISTICS OF PURE TITANIUM/A5083 ALUMINUM ALLOY JOINT : Report 2:Metallurgical Properties of Joint Interface Region

The metallurgical properties of the interface regions of as-welded dissimilar friction joints between pure titanium (Ti) and aluminum-magnesium alloy (A5083) base materials were investigated. Hardness values in the region about 1mm from the joint interface were higher than those in the bulk Ti and A5083 substrates. No transition layer was observed at the joint interface using optical microscopy, X-ray diffraction analysis and scanning electron microscope (SEM) including EDS-analysis. However, transmission electron microscope (TEM) observation of the joint interface region confirmed that intermetallic phases with thickness of 200nm or less were produced during joining. The intermetallic phases were estimated to be Mg2A13, Al3Ti and ƒÑ-Al (Ti2Mg 3Al18) by TEM-EDS analysis. It was concluded that the selection of joining parameters that promotes the formation of thin transition and intermetallic layers produces dissimilar joints with satisfactory mechanical properties.

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Materials Science Research International

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