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Effects of Using of Modified Al-Mg (AA 5356) Filler on Cracking Susceptibility of Al-Mg-Si (AA 6061) Alloy Welds
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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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