4302 構造用アルミニウム合金の摩擦攪拌接合部の硬さと組織(DS1 軽量化対応接合技術-アルミニウム合金の摩擦攪拌接合施工法に関する研究-,ディベロップメント・セッション)

概要

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Studies were carried out on hardness and metallurgical structures of friction stir welded (FS welded) joints under the combination of 5083, 6N01 (6005C) and 7N01 (7204) alloys of 8 mm thick parent materials by two or three fabricators and four ways of the procedures and also on difference in these hardness and structures caused by the dissimilarities. Hardness distribution of FS welded zone, and their shapes and structures, etc., were clarified and these profiles were put in order according to these combinations. Some convenient means as a measure, from practical use, to estimate these profiles were examined although further research seemed to be needed for the establishment, together with theorization of friction stir welding mechanism. The dissimilarities in parent materials and friction stir welding procedures were clearly reflected in the hardness distributions, and the distributions to consider suitable were obtained under their specified combinations.
2008-12-09