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Table 5

Effect of welding speed on cooling rate, grain sizes and mechanical properties of AZ61 alloy [96].

Welding speed
(mm/min)
Cooling rate (Ks−1) D (α-Mg) (μm) Dβ-Mg17Al12
(μm)
Vf β-Mg17Al12
(%)
σUTS
(MPa)
σY
(MPa)
BM 285 278
1800 8287 8.8 1.3 6.02 143 121
2200 12364 7.4 1.1 6.08 225 173
2500 15963 6.7 0.8 6.19 236 178
2800 20020 5.9 0.6 6.47 268 195

NB: BM − Base material, D − grain sizes, Vf − volume fraction.

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