TIG 法によるアルミニウムと軟鋼の接合についての検討

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This report deals with some experiments on TIG welding aluminum and its alloys to mild steel coated with various materials including Al, Al-Si, Al-Cu, Al-Be, Sn, Zn, Zn-Al and so on by a simple hot dipping method. The results obtained in this study are summarized as follows. 1) Additions of Si, Be and Cu to Al inhibited the formations of an intermetallic layer between mild steel and Al-base coating, but additions of Mg and Ag did not, and in the cases of Zn and Zn-Al coatings an intermetallic layer was little observed. 2) The tensile strengths of welded joints were equal to or higher than those of aluminum parent alloys in 1100 and 3003 alloys, but lower than in 5052,5083 and 6061 alloys. 3) As tensile testing of heat-treated welds showed reduction of strength, these joints are not applicable to high temperature services. But there is possibility for use of aluminum alloys are concerned. 4) The definite relation between coating materials and mechanical properties of welded joints was not observed as far as this study was concerned. But further study should be necessary for explaining this relation, using test panels which have high quality coating on the steel. 5) As a whole a 4043 filler rod was satisfactory comparing with a 5356 filler rod. It has been confirmed from this study that aluminum can be joined to mild steel by TIG welding provided mild steel is suitably coated with proper materials. Mechanical properties of welded joints, however, depend mainly on the coating quality and skill for welding technique. Therefore, under the conditions of satisfactory coating quality and skillful welding technique, further study should be necessary especially regarding the relation between mechanical properties of weld and an intermetallic layer with metallurgical consideration of interfacial layers of various coating combinations.
社団法人溶接学会の論文
1965-04-25

TIG 法によるアルミニウムと軟鋼の接合についての検討

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