TY - GEN
T1 - In-situ observation of SSM microstructure formation during cooling slope casting of an NH4Cl-H2O alloy with vibrating the slope
AU - Huang, Weidong
AU - Wang, Wenli
AU - Lin, Xin
AU - Wang, Meng
PY - 2006
Y1 - 2006
N2 - Vibrating the slope during cooling slope casting of a metallic alloy has shown helpful for causing the microstructure more spherical and thinner in a previous research by the present authors. This paper gives results from a direct observation of the SSM microstructure formation during cooling slope casting of an NH4C1-H20 alloy with vibrating the slope. It is found that the vibration exerted to the slope can break down the solidification shell formed at the surface of the slope through rapid chilling and produce effectively fine globular grains in the microstructures. The main factors affecting the fine grain formation include the chilling extent, frequency and amplitude of the vibration of the slope, and the superheat of the alloy melt, respectively. The higher vibration frequency and amplitude, the lower superheat of the alloy melt, and the lower chilling temperature will help the formation of finer globular grains.
AB - Vibrating the slope during cooling slope casting of a metallic alloy has shown helpful for causing the microstructure more spherical and thinner in a previous research by the present authors. This paper gives results from a direct observation of the SSM microstructure formation during cooling slope casting of an NH4C1-H20 alloy with vibrating the slope. It is found that the vibration exerted to the slope can break down the solidification shell formed at the surface of the slope through rapid chilling and produce effectively fine globular grains in the microstructures. The main factors affecting the fine grain formation include the chilling extent, frequency and amplitude of the vibration of the slope, and the superheat of the alloy melt, respectively. The higher vibration frequency and amplitude, the lower superheat of the alloy melt, and the lower chilling temperature will help the formation of finer globular grains.
KW - Cooling slope casting
KW - Dendrite growth
KW - Globular microstructure
KW - Transparent model alloy
KW - Vibration
UR - https://www.scopus.com/pages/publications/85088180056
U2 - 10.4028/3-908451-26-4.193
DO - 10.4028/3-908451-26-4.193
M3 - 会议稿件
AN - SCOPUS:85088180056
SN - 3908451264
SN - 9783908451266
T3 - Solid State Phenomena
SP - 193
EP - 196
BT - Semi-Solid Processing of Alloys and Composites - Proceedings of the 9th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2006
PB - Trans Tech Publications Ltd
T2 - 9th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2006
Y2 - 11 September 2006 through 13 September 2006
ER -