TY - JOUR

T1 - Influence of composition on hot tearing in binary mg-zn alloys

AU - Zhou, L.

AU - Huang, Y. D.

AU - Mao, P. L.

AU - Kainer, K. U.

AU - Liu, Z.

AU - Hort, N.

PY - 2011/8

Y1 - 2011/8

N2 - Mg-Zn alloys have a large freezing zone, and their susceptibility to hot tearing is high. Investigations on their hot tearing are necessary for both materials science and practical applications. The present work evaluates the susceptibility of hot tearing of Mg-Zn alloy using Clyne and Davies's modelling combined with thermodynamic calculations. In order to compare with the calculated results, the susceptibility of hot tearing was measured using previously developed quantitative experimental method. It is found that the simulation results are in agreement with the experimental results. Both of them show that the curves of the susceptibility of hot tearing versus the content of Zn has a typical 'Λ' shape. With increasing content of Zn, the susceptibility of hot tearing first increases, reaches the maximum at 2-4%Zn and then decreases again. Experimental investigations also demonstrate that the hot tearing susceptibility decreases with increasing initial mould temperature.

AB - Mg-Zn alloys have a large freezing zone, and their susceptibility to hot tearing is high. Investigations on their hot tearing are necessary for both materials science and practical applications. The present work evaluates the susceptibility of hot tearing of Mg-Zn alloy using Clyne and Davies's modelling combined with thermodynamic calculations. In order to compare with the calculated results, the susceptibility of hot tearing was measured using previously developed quantitative experimental method. It is found that the simulation results are in agreement with the experimental results. Both of them show that the curves of the susceptibility of hot tearing versus the content of Zn has a typical 'Λ' shape. With increasing content of Zn, the susceptibility of hot tearing first increases, reaches the maximum at 2-4%Zn and then decreases again. Experimental investigations also demonstrate that the hot tearing susceptibility decreases with increasing initial mould temperature.

KW - Casting

KW - Hot tearing

KW - Magnesium alloy

KW - Numerical simulation

KW - Thermodynamic calculation

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=79960875450&partnerID=8YFLogxK

U2 - 10.1179/136404611X13001912813942

DO - 10.1179/136404611X13001912813942

M3 - Journal articles

AN - SCOPUS:79960875450

VL - 24

SP - 170

EP - 176

JO - International Journal of Cast Metals Research

JF - International Journal of Cast Metals Research

SN - 1364-0461

IS - 3-4

ER -