TY - JOUR
T1 - Microstructure and growth morphology of Frank-Kasper phase in rapidly solidified Mg32Al17Zn32 ternary alloys
AU - Zhu, Man
AU - Yang, Gencang
AU - Wan, Diqing
AU - Wang, Zhijun
AU - Zhou, Yaohe
PY - 2009/8
Y1 - 2009/8
N2 - In the present investigation, the microstructures and growth morphology of Mg32(Al,Zn)49 Frank-Kasper phase in rapidly solidified Mg32Al17Zn32 ternary alloys were studied in detail. The samples were characterised by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), field-emission scanning electron microscopy (FE-SEM) and energy dispersive spectrum (EDS). The results show that the microstructures mainly consist of Mg32(Al,Zn)49 Frank-Kasper phase and interdendritic Mg-rich Φ-phase. Under rapid solidification condition, Mg32(Al,Zn)49 Frank-Kasper phase reveals a perfect faceted dendritic characteristic in the shape of a three-fold symmetric microstructure with doublet tips in the axes direction. Observations for fracture surfaces show that the growth morphology of Mg32(Al,Zn) 49 grains was truncated cubic, and its growth mechanism was also discussed.
AB - In the present investigation, the microstructures and growth morphology of Mg32(Al,Zn)49 Frank-Kasper phase in rapidly solidified Mg32Al17Zn32 ternary alloys were studied in detail. The samples were characterised by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), field-emission scanning electron microscopy (FE-SEM) and energy dispersive spectrum (EDS). The results show that the microstructures mainly consist of Mg32(Al,Zn)49 Frank-Kasper phase and interdendritic Mg-rich Φ-phase. Under rapid solidification condition, Mg32(Al,Zn)49 Frank-Kasper phase reveals a perfect faceted dendritic characteristic in the shape of a three-fold symmetric microstructure with doublet tips in the axes direction. Observations for fracture surfaces show that the growth morphology of Mg32(Al,Zn) 49 grains was truncated cubic, and its growth mechanism was also discussed.
KW - Faceted dendrite
KW - Frank-Kasper phase
KW - Growth morphology
KW - Rapid solidification
UR - http://www.scopus.com/inward/record.url?scp=74249104367&partnerID=8YFLogxK
U2 - 10.1007/s12598-009-0078-3
DO - 10.1007/s12598-009-0078-3
M3 - 文章
AN - SCOPUS:74249104367
SN - 1001-0521
VL - 28
SP - 401
EP - 404
JO - Rare Metals
JF - Rare Metals
IS - 4
ER -