溶接継手のクリープ性能評価に関する検討(第 1 報) : 母材と溶接金属のクリープ特性の相違が溶接継手のクリープ強度, 延性に及ぼす影響に関する検討

概要

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The creep tests for welded joints with higher creep rate and lower strength weld metal and with lower creep rate and higher strength weld metal respectively which are subjected to transverse and longitudinal loads respectively have been carried out. In case of the joints subjected to transverse load, the creep strain is influenced not only by the magnitude of a gage length but also by the ratio of the weld metal width to the diameter of a specimen. The rupture strength is dominated fundamentally by the ratio of the weld metal strength to base metal strength, though there is an effect of the ratio of the weld metal width to the diameter of a specimen on the rupture strength of a welded joint with higher creep rate and lower strength weld metal. In case of the joints subjected to longitudinal load, the secondary creep rates are affected by the ratio of the weld metal width to the specimen width. The rupture strength is dominated not only by the rupture strength ratio of the weld metal to the base metal but also by the creep rate ratio of the weld metal to the base metal.
社団法人溶接学会の論文
1982-02-05