TY - GEN
T1 - Solidification behavior of Mg-Al-Ca alloys with different aluminum and calcium contents
AU - Kako, Hiroki
AU - Saikawa, Seiji
AU - Ikeno, Susumu
AU - Shimizu, Kazunori
AU - Iwakawa, Hiroaki
N1 - Publisher Copyright:
© 2016, The WFO (The World Foundry Organization Ltd). All rights reserved.
PY - 2016
Y1 - 2016
N2 - Magnesium alloys have the characteristic with high specific tensile strength and lightweight properties. Therefore, it is used for auto mobile industry, aircraft industry, and electronic equipment parts, and a future use expansion attracts attention. In this study, behavior of solidification structure in Mg-0-12mass%Al-0-10%Ca alloys cast into sand mold were investigated by XRD measurement and OM, SEM-EDS observation. In the as-cast state of all alloys, solidification structures mainly consist of the primary crystallized α-Mg and secondary crystallized eutectic, such as Mg2Ca, Mg17Al12 and Al2Ca phases. The shape of primary crystallized α-Mg phase changed from cellular to dendritic, when Al and Ca content increased. On the other hands, shape of secondary crystallized Al2Ca and Mg2Ca phases were lamellar, while Mg17Al12 phase was crystallized at grain boundary and cell gaps with blocky shaped. Temperature stagnation region due to the latent heat release by crystallization of primary crystal with the increase of Al concentration and the Ca concentration is reduced.
AB - Magnesium alloys have the characteristic with high specific tensile strength and lightweight properties. Therefore, it is used for auto mobile industry, aircraft industry, and electronic equipment parts, and a future use expansion attracts attention. In this study, behavior of solidification structure in Mg-0-12mass%Al-0-10%Ca alloys cast into sand mold were investigated by XRD measurement and OM, SEM-EDS observation. In the as-cast state of all alloys, solidification structures mainly consist of the primary crystallized α-Mg and secondary crystallized eutectic, such as Mg2Ca, Mg17Al12 and Al2Ca phases. The shape of primary crystallized α-Mg phase changed from cellular to dendritic, when Al and Ca content increased. On the other hands, shape of secondary crystallized Al2Ca and Mg2Ca phases were lamellar, while Mg17Al12 phase was crystallized at grain boundary and cell gaps with blocky shaped. Temperature stagnation region due to the latent heat release by crystallization of primary crystal with the increase of Al concentration and the Ca concentration is reduced.
KW - Cooling curves
KW - Mg-Al-Ca alloys
KW - Microstructures
KW - Sand-mold
UR - http://www.scopus.com/inward/record.url?scp=85016600222&partnerID=8YFLogxK
M3 - 会議への寄与
AN - SCOPUS:85016600222
T3 - 72nd World Foundry Congress, WFC 2016
SP - 407
EP - 408
BT - 72nd World Foundry Congress, WFC 2016
PB - The WFO (The World Foundry Organization Ltd)
T2 - 72nd World Foundry Congress, WFC 2016
Y2 - 21 May 2016 through 25 May 2016
ER -