溶接凝固機構とその組織の特性(第 6 報) : 高純度アルミニウムの溶接部における凝固組織の特性

概要

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The growth direction of cellular subgrains and the preferred orientation in columnar zone in TIG-arc weld metal have been investigated for aluminum 1mm thick sheets of 99.96% purity. Conclusions obtained are as follows : (1) The growth direction of cellular subgrains in the weld metal of such a high purity aluminum agrees with the direction of the maximum temperature gradient at the solid-liquid interface, and is independent of <100> direction. Therefore, when the direction of the maximum temperature gradient gradually changes as growth proceeds, the growth direction follows its change. (2) A competitive growth among the columnar crystals proceeds near the weld center. As a result, the columnar zone near the weld center has [100] fiber texture.
社団法人溶接学会の論文
1971-09-25