D.R. Liu
,
E.J. Guo
,
L.P. Wang
金属学报(英文版)
Numerical investigations of the `banding' microstructure formation during solidification of Ti-6Al-4V alloy in the centrifugal casting are conducted using a multi-scale model, which combines the finite difference method (FDM) at the macroscale with a cellular automaton (CA) model at the microscale. ...
关键词:
Modeling
,
null
,
null
J.W. Zhao
,
H. Ding
,
W.J.Zhao
,
F.R. Cao
,
H.L. Hou
,
Z.Q. Li
金属学报(英文版)
A cellular automaton (CA) model is established to
simulate dynamic recrystallization (DRX) in the $\beta$ single-phase
field of Ti6Al4V alloy, and the kinetics during DRX processing has
been analyzed. The model employed considers the influences of
dynamic recovery, nucleation rate, strain rate and d...
关键词:
Ti6Al4V alloy
,
null
,
null
,
null
,
null
,
null
Lugui CHEN
,
Yong LING
,
Xiuhong KANG
,
Lijun XIA
,
Dianzhong LI
材料科学技术（英文）
A large-scale, thin wall duplex stainless steel impeller with complex geometry was deformed severely and unpredictably during casting and heat treatment processes resulted in dimensional failure for the final part. In this paper, the distortion of the impeller during casting and heat treatment was c...
关键词:
Numerical simulation
,
null
,
null
,
null
,
null
Jiuzhou ZHAO
,
L.Ratke
,
Jun JIA
,
Qingchun LI
材料科学技术（英文）
The microstructure development during a cooling period of alloys being immiscible in the liquid state such as Al-Pb or Al-Bi has gained renewed scientific and technical interest during the last decades. Experiments have been performed to investigate the phase transformation kinetics in the liquid mi...
关键词:
Immiscible alloy
,
null
,
null
,
null
Xiaochun SHA
,
Chunli MO
,
Dianzhong LI
,
Yiyi LI
材料科学技术（英文）
Based on hot rolling production line of strip steel, the off-line in-house software, termed as ROLLAN (Rolling Analysis), is developed. The code is mainly used to predict the evolution of temperature, rolling force, fraction and grain size of recrystallization, fraction and grain size of phase trans...
关键词:
Microstructural evolution
,
null
,
null
,
null
Jiuzhou ZHAO
,
Dongming LIU
,
Hengqiang YE
材料科学技术（英文）
In order to understand the solidification process of an atomized droplet and predict the fraction solidification of droplets with flight distance during spray forming, a numerical model based on the population dynamics approach is developed to describe the microstructure evolution under the common a...
关键词:
Rapid solidification
,
null
,
null
,
null
Jiuzhou ZHAO
材料科学技术（英文）
Modeling and simulation have been carried out for Al-Pb alloys to investigate the Brownian coagulation effect on the microstructure development in a gas-atomized drop during the liquid-liquid decomposition. The results indicate that Brownian coagulation has a weak effect on the nucleation and a rela...
关键词:
Immiscible alloy
,
null
,
null
,
null
,
null
孙天鸣
,
董利民
,
王晨
,
郭文利
,
王莉
,
梁彤祥
新型炭材料
doi:10.1016/S1872-5805(13)60087-6
依据经典流体力学理论,建立了真实密度和孔隙率对炭素材料电阻率影响规律的模型.模型计算结果表明,真实密度对炭素材料的电阻率影响较小,偏差小于3％;开孔气孔率对电阻的影响大于闭孔气孔率,开孔气孔率增加40％时电阻率增加了250％,而相同幅度闭孔气孔率的增加引起电阻率的增加值只有25％.模型计算结果与实测...
关键词:
模型
,
炭材料
,
电阻
,
气孔率
