アルミニウム合金5083突合せ溶接継手の引張試験片寸法が機械的性質に及ぼす影響
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概要
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Different sizes of tensile test specimens were extracted from three kinds of butt-welded plates in thickness 6, 12 and 22mm. Tensile strength of welded joints rises to a definite value as the ratio of W/t increases (W: specimen width, t: specimen thickness). 0.2% proof stress obtained on 50mm gage length with the weld in the center is free from the effects of W/t. But, if the weld metal is remarkably lower in strength than the base metal, the proof stress slightly decreases with increase in W/t. Barba's law representing a relation between elongation and size of specimen is applicable to the welded joint in which a slight difference lies between strengthes of the base metal and weld metal. For the welded joints having weld metal of lower strength, Barba's law is applicable only to the specimens having large values of W/t. The ductility of welded joints can be expressed by the elongation against L0 = 5.65√A in the similar way to the ordinary tensile test (L0: gage length, A: cross sectional area).
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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