Ａｌ‐Ｚｎ‐Ｍｇ合金溶接金属部の時効性と溶接凝固組織の関係

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  • Relation between aging characteristics and weld-solidified structures in Al-Zn-Mg alloy welds
  • Al Zn Mg ゴウキン ヨウセツ キンゾクブ ノ ジコウセイ ト ヨウセツ ギョウコ ソシキ ノ カンケイ

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抄録

Al-4.5%Zn-1.2%Mg alloy welds were examined by means of hardness measurements, X-ray small angle scattering methods and transmission electron microscopy. Differences in macrostructures of each region in Al-Zn-Mg alloy weld metals have no effct on their aging characteristics. Differences between microstructures of weld metals and those of heat-affected zones in the alloy welds affect on their aging characteristics; subgrains in weld metals of Al-Zn-Mg alloy welds decrease their agehardenabilities at 80°C, but increase them at 150°C. These results are discussed in terms of solute segregations and preferred precipitations of η' phases at subgrain boundaries or on dislocations in weld metals of Al-Zn-Mg alloy welds.

収録刊行物

  • 軽金属

    軽金属 29 (2), 58-63, 1979

    一般社団法人 軽金属学会

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