Effect of Friction Stir Processing on Microstructure and Mechanical Properties of AZ91C Magnesium Cast Alloy Weld Zone

Hassani, Behzad; Karimzadeh, F.; Sabooni, S.; Vallant, Rudolf

doi:10.1007/s11665-016-2129-x

Cited by 9 publications

(1 citation statement)

References 22 publications

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“…Owing to their high specific strength, Mg alloys are increasingly used to reduce the mass of vehicles [1,2]. Many studies have focused on the welding and joining of Mg alloys [3][4][5][6]; however, liquation cracking still exists during arc welding. Yu et al [7] reported liquation cracking in a Mg-Zn-Zr alloy during laser-beam welding and found that the cracking susceptibility could be reduced by reducing the heat input.…”

Section: Introductionmentioning

confidence: 99%

Effect of intermetallics on susceptibility of Mg alloy welds to liquation cracking

Yuan

Wang

et al. 2020

Science and Technology of Welding and Joining

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The circular-patch welding test was used to study the liquation and liquation cracking of AZseries Mg alloys. A heat treatment was carried out on the as-received AZ91 alloy to dissolve the γ (Mg 17 Al 12 ) particles before welding. The circular-patch welding test was then conducted on the heat-treated, as-received AZ91 alloy using AZ61 and AZ91 filler wires. The results showed that the susceptibility of AZ91 alloy to liquation and liquation cracking was significantly reduced by the dissolution of massive γ (Mg 17 Al 12 ) particles via a heat treatment before welding as the liquation mechanism was changed. Both constitutional liquation and incipient melting occurred in the partially melted zone of the as-received AZ91 welds, while only incipient melting occurred in the heat-treated AZ91 welds.

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