TY - JOUR

T1 - Nucleation mechanism of Mg17Al12-precipitates in binary Mg-7 wt.% Al alloy

AU - Lalpoor, M.

AU - Dzwonczyk, J. S.

AU - Hort, N.

AU - Offerman, S. E.

PY - 2013/4/25

Y1 - 2013/4/25

N2 - We show that the classical nucleation theory that describes the critical nucleus as a coherent pill-box fits the experimentally measured nucleation rate of Mg17Al12-precipitates in undeformed Mg-7 wt.% Al alloy much more accurately than the classical theory that describes the critical nucleus as an incoherent sphere. The nucleation of Mg17Al 12-precipitates takes place in the transient nucleation regime. Coarsening of the Mg17Al12-precipitates occurs just before the steady state nucleation rate is reached.

AB - We show that the classical nucleation theory that describes the critical nucleus as a coherent pill-box fits the experimentally measured nucleation rate of Mg17Al12-precipitates in undeformed Mg-7 wt.% Al alloy much more accurately than the classical theory that describes the critical nucleus as an incoherent sphere. The nucleation of Mg17Al 12-precipitates takes place in the transient nucleation regime. Coarsening of the Mg17Al12-precipitates occurs just before the steady state nucleation rate is reached.

KW - Magnesium-aluminum alloys

KW - Nucleation kinetics

KW - Precipitation

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84873028627&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2012.12.116

DO - 10.1016/j.jallcom.2012.12.116

M3 - Journal articles

AN - SCOPUS:84873028627

VL - 557

SP - 73

EP - 76

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -