Hot Cracking Susceptibility in the TIG Joint of AZ31 Mg-Alloy Plates Produced by the TRC Process with and without Intensive Melt Shearing

Xiao Hui Xue; Yun Wang; Ian Stone; Zhong Yun Fan

doi:10.4028/www.scientific.net/MSF.765.756

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HomeMaterials Science ForumMaterials Science Forum Vol. 765Hot Cracking Susceptibility in the TIG Joint of...

Hot Cracking Susceptibility in the TIG Joint of AZ31 Mg-Alloy Plates Produced by the TRC Process with and without Intensive Melt Shearing

Abstract:

AZ31 Mg-alloy plates produced by both conventional twin roll casting (TRC) and the melt-conditioned TRC (MC-TRC) processes were used to compare the hot cracking susceptibility in the joints of one bead-on-plate TIG welds. The plates cast with melt shearing were employed as the welding wire. The results showed that the MC-TRC plate has higher liquefied cracking resistance in the heat affected zone (HAZ) than that of the TRC plate. The improved liquefied cracking resistance of the MC-TRC plate can be attributed to the well dispersed and uniformly distributed eutectic regions in the MC-TRC microstructure.

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Periodical:

Materials Science Forum (Volume 765)

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756-760

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.765.756

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Online since:

July 2013

Authors:

Xiao Hui Xue, Yun Wang, Ian Stone, Zhong Yun Fan

Keywords:

Grain Refinement, Hot Cracking Susceptibility, Intensive Melt Shearing, Magnesium Welding

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