Microstructure of Weld Heat-Affected Zone in Cold Rolled Aluminum Plate

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概要

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• Hardness and tensile strength measurements of cold rolled aluminum plate (A1080) after MIG welding procedure using a filler metal (A1100W) were re-examined as a function of the initial rolling reduction of thickness from 5% to 63%, and then the direct observations of microstructures at heat-affected zone (HAZ) have been performed using a technique of thin foil transmission electron microscopy. Compression texture of the base metal changes to the annealing texture at HAZ and the deformed region at high temperature as a formation of dislocation cell structure and tangled dense dislocations could be observed at the near of fusion line between deposited weld metal and heat-affected zone (HAZ). In deposited weld metal, the impurity segragation at grain boundaries is quite appreciable compared in HAZ and the results from electron-probe X-ray microanalysis have been discussed briefly.

• 大阪大学の論文

著者

• Nasu Saburo

  Osaka University

• ENJYO Toshio

  Osaka University

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