Indian Welding Journal

K. Prasad Rao ¹, N. Ramanaiah ¹, B. Vamsikrishna ¹

Affiliations
1 Department of Metallurgical & Materials Engineering Indian Institute of Technology Madras, Chennai, IN

Abstract

The paper deals with an intention of solving HAZ problems through manipulating fusion zone chemistry and microstructure. Grain refiners such as Sc, Ti+B and Zr have been added to fusion zone through the AA5356 filler metal. The results indicated that the maximum refinement in the weld microstructure and consequent reduction in cracking susceptibility in alloy AA6061 can be achieved using AA5356 filler metal with 0.5% Sc addition.

Keywords

Grain Refinement, Welds, Aluminium Alloy, Partially Melted Zone, Haz Cracks, Liquation.

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