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Table 2 Materials parameters for AZ91 magnesium alloy used in simulation model

From: Microstructural simulation of friction stir welding using a cellular automaton method: a microstructure prediction of AZ91 magnesium alloy

Material parameter

Value

Primary dislocation density, Ļ 0(Ī¼m āˆ’ā€‰2)

0.01 (Liu et al. 2013)

Shear modulus, G(MPa)

17,000 (Guangyin et al. 2001; Knezevic et al. 2010)

Activation energy for self-diffusion, \( \varDelta {H}_{\mathrm{b}}\frac{kJ}{\mathrm{mol}} \)

140 (Guangyin et al. 2001)

Activation energy, \( \varDelta H\frac{kJ}{\mathrm{mol}} \)

147

Material constant in Eq. 9, K

6030 (Liu et al. 2013)

Shear friction factor, m

0.4

Hardening parameter, h 0

1.34e13

Recovery parameter, r 0

15.6

Strain rate sensitivity, m

0.2