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Study on Dendritic Growth in Pressurized Solidification of Mg–Al Alloy Using Phase Field SimulationHaowei Pan1,Zhiqiang Han1,Baicheng Liu1,21. Key Laboratory for Advanced Materials Processing... University摘 要:A multi-grain phase field model coupled with thermodynamic calculation was adopted to describe the dendritic growth in pressurized solidification of Mg......
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Growth rate and composition of directionally solidified intermetallic TiAl–Nb alloys with different solidification conditionsLi-Wei Zhang1,Jun-Pin Lin1,Xiang-Jun Xu2,Jian-Ping He1,Xian-Fei Ding3,Xiao...-xAl-8Nb(x = 41,43,45,47,49;at%) alloys were solidified unidirectionally upwards with a constant temperature gradient of G=3.8 K·mm-1at wide range of growth rates of v=10-400 μm·s-1using a Bridgman......
Growth Defects in Langasite Crystals Observed with White Beam Synchrotron Radiation Topography Huang Wanxia1,Wang Xuping2,Zhu Peiping1,Zhao Hongyang2,Wang Jiyang2,Zhang Jianxiu2,Hu Xiaobo2... single crystal was grown by the Czochralski method and its perfection was assessed by white beam synchrotron radiation topography. It is found that the growth core and the growth striations......
, changing from equiaxed grains to columnar grains in the center of ingots. It is indicated that the increase of phosphorous reduced the nucleation of grains and promoted dendrite growth during...Influence of phosphorous on nucleation and growth of grains during solidification in a NiCrFe alloyXintong Lian1,2,Wenru Sun1,Litao Chang1,Fang Liu1,Xin Xin11. Institute of Metal Research, Chinese......
. With an increase in solidification rates, the crystal growth modes changed gradually from cellular and primary dendrite morphology to developed dendritic morphology. In addition, domain configurations were observed...Relationship between crystal growth mode, preferred orientation and magnetostriction of (Tb0.3Dy0.7)Fe1.95 alloys张世荣,李扩社,于敦波,李勇胜,杨红川,李红卫,涂赣峰摘 要:
Growth restriction effects during solidification of aluminium alloys
CHEN Zhong-wei(陈忠伟), HE Zhi(何 志), JIE Wan-qi(介万奇)
State Key Laboratory of Solidification Processing... be quantified by the growth-restriction parameter Q, and Q possesses the better correlation with the grain size. Based on the constitutional undercooling generated by the growth of an adjacent grain during......Growth restriction effects during solidification of aluminium alloys
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来源: 《中国有色金属学报(英文版)2009年第2期》——CHEN Zhong-wei 何志 介万奇
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, it is the most important to the anisotropy of solid-liquid interface. It is a very important parameter to influence the growth shape of crystals. The free dendrite must involve the interface anisotropy in order to form the stable dendrite tip shape; at the meantime the growth direction and the tip radius have relations between anisotropy. The anisotropy of solid-liquid interface includes......
and solidification time on dendrite arm spacing [7]. Narrow interdendritic channels can be obtained at high cooling rates due to accelerated nucleation and growth rate of dendrite arms [7,10]. Apart from..., DAI Yong-bing, FU Ya-nan, XIE Hong-lan, YIN Fu-cheng, SUN Bao-de. In situ on columnar-equiaxed transition and an axial columnar dendrite growth of Al-15%Cu alloy by synchrotron radiography [J......