Joint Properties of Friction Stir Welded Austenitic Stainless Steels

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  • 摩擦攪拌接合による薄板オーステナイト系ステンレス鋼の継手特性
  • マサツ カクハン セツゴウ ニ ヨル ウスイタ オーステナイトケイ ステンレス コウ ノ ツギテ トクセイ

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Abstract

Mechanical properties of friction stir welded joints of austenitic stainless steels, SUS301L-1/4H and SUS304, under different heat input conditions were studied. The tool rotation speed was set at 600rpm and the welding speed was changed from 60 to 540mm/min. The tensile strength of the SUS301L-1/4H welded joints is equivalent to that of the base material at the welding speeds of 120 to 300 mm/min. The proper welding condition range is smaller than that for SUS304 which is a typical austenitic stainless steel. This result should be related with the difference in the strengths between SUS301L and SUS304 at a high temperature.

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