Three dimensional simulation of microstructure evolution for ceramic tool materials

2011 ◽  
Vol 50 (12) ◽  
pp. 3334-3341 ◽  
Author(s):  
Song Hao ◽  
Chuanzhen Huang ◽  
Bin Zou ◽  
Jun Wang ◽  
Hanlian Liu ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Three Dimensional ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Dimensional Simulation

Three-Dimensional Simulation of Nano-Composite Ceramic Tool Materials

2014 ◽  
Vol 1052 ◽  
pp. 86-90
Author(s):  
Song Hao ◽  
Chuan Zhen Huang
Keyword(s):  
Microstructure Evolution ◽  
Boundary Migration ◽  
Three Dimensional ◽  
Phase Field Model ◽  
Tool Material ◽  
Composite Ceramic ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Three Phase ◽  
Dimensional Simulation

A phase field model of three-phase composite ceramic tool materials with two kinds of nanoparticles is set up in this research. The three-dimensional simulation algorithm is modified and a new efficient algorithm is established. The microstructure evolution of three-phase nanoceramic tool materials is more efficiently and successfully simulated in 200x200x200 unit size. Microstructure evolution of single-phase and three-phase ceramic tool materials is simulated respectively. It can be found that the peak value of grain size distribution for three-phase nanoceramic tool material is smaller than average diameter. It indicates that the nanoparticles not only restrain grain boundary migration, but also prevent the elimination of small grains and refine matrix grains.

Three Dimensional Monte Carlo Simulation of Microstructure Evolution in Presence of Pores and Impurities for Three-Phase Nanocomposite Ceramic Tool Materials

2012 ◽  
Vol 500 ◽  
pp. 531-536
Author(s):  
Song Hao ◽  
Chuan Zhen Huang ◽  
Bin Zou ◽  
Jun Wang ◽  
Han Lian Liu ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Microstructure Evolution ◽  
Three Dimensional ◽  
Ceramic Tool ◽  
Quantitative Characterization ◽  
Tool Materials ◽  
Three Phase ◽  
Grain Growth Kinetics ◽  
The Relationship

A modified three-dimensional Monte Carlo (MC) model in presence of pores and impurities for three-phase nanocomposite ceramic tool materials is successfully established in this paper. Pore migration by surface diffusion is incorporated into the MC model and it is applied to observe and scientific quantitative characterization of three dimensional microstructure evolution and densification process. Some modifications are applied to the simulation algorithm to improve the computing efficiency. The influence of pores on the particle and impurity loaded grain boundaries is simulated and investigated for the study of grain growth kinetics. The relationship between porosity and density is also analyzed. The results indicate that the higher the porosity is, the lower the density will be.

Three Dimensional Monte Carlo Simulation of Microstructure Evolution in Presence of Pores for Three-Phase Nano-Composite Ceramic Tool Materials

2012 ◽  
Vol 457-458 ◽  
pp. 1567-1572
Author(s):  
Song Hao ◽  
Chuan Zhen Huang ◽  
Bin Zou ◽  
Jun Wang ◽  
Han Lian Liu ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Grain Growth ◽  
Microstructure Evolution ◽  
Three Dimensional ◽  
Composite Ceramic ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Free System ◽  
Tool Materials ◽  
Three Phase

A new three-dimensional Monte Carlo (MC) model in presence of pores of microstructure evolution for three-phase nano-composite ceramic tool materials is successfully established to simulate the grain growth during sintering process in this paper. The defect-free microstructure evolution and microstructure evolution in presence of pore are simulated and investigated. The results show that the new MC model can well simulate the grain growth and pores shrinkage during densification process. Compared with defect-free system, the grain growth velocity can be slow down obviously owning to the existence of pores.

Simulation of Fabrication for Al2O3 Ceramic Tool Materials

2012 ◽  
Vol 500 ◽  
pp. 537-543 ◽  
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Hong Tao Zhu ◽  
Chong Hai Xu
Keyword(s):  
Grain Size ◽  
Monte Carlo ◽  
Microstructure Evolution ◽  
Potts Model ◽  
Single Phase ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Fabrication Parameters

The new Monte Carlo Potts model that couples with fabrication parameters and considers pores and additives has been developed in order to simulate the fabrication of single-phase ceramics tool materials. The microstructure evolution for single-phase Al2O3 ceramic tool materials is simulated with the different technology parameters. At the same time, the single-phase Al2O3 ceramic tool materials are fabricated with the corresponding technology parameters. The errors of grain size between the simulated and the experimental is 12.1 and18.2%.

Simulation of the Effect of Sintering Temperature on Microstructure Evolution in Nanocomposite Ceramic Tool Materials

2013 ◽  
Vol 770 ◽  
pp. 194-197
Author(s):  
Hong Mei Cheng ◽  
Chuan Zhen Huang ◽  
Xiu Ye Wang
Keyword(s):  
Grain Growth ◽  
Microstructure Evolution ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
Higher Temperature ◽  
The Mean ◽  
Simulation Results

A Monte Carlo Potts model coupled with sintering temperature for the sintering process of nanocomposite ceramic tool materials is proposed, the relation between grain growth and sintering temperature is presented. The grain growth process at different sintering temperature is investigated in this model, and the effect of sintering temperature on microstructure evolution is discussed, it is found that the mean grain size increases with the increase of sintering temperature during simulation, and nanoparticles are easier to enter into matrix grains to form intragranular-type microstructure at higher temperature. The simulation results are in accordance with the experimental observations.

Simulation of Fabrication for Single-Phase Al2O3 Ceramic Tool Materials at Different Fabrication Pressure

2012 ◽  
Vol 499 ◽  
pp. 150-155 ◽  
Author(s):  
Bin Fang ◽  
Chuan Zhen Huang ◽  
Chong Hai Xu ◽  
Sheng Sun
Keyword(s):  
Monte Carlo ◽  
Microstructure Evolution ◽  
Potts Model ◽  
Single Phase ◽  
Two Dimensional ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Mean Grain Size ◽  
The Mean ◽  
The Relationship

The relationship between fabrication pressure and microstructure evolution is proposed. A computer simulation coupled with fabrication pressure for the hot-pressing process of single-phase ceramic tool materials has been developed, which uses a two-dimensional hexagon lattice model mapped from the realistic microstructure without considering the presence of pores. The fabrication of single-phase Al2O3 is simulated. The mean grain size of simulated microstructure by Monte Carlo Potts model integrated with fabrication pressure increases with an increase in fabrication pressure, which is consistent with the experiment results. It is shown that Monte Carlo Potts model coupled with fabrication pressure may simulate the microstructure evolution of single-phase ceramic tool materials.

Simulation of the Effect of Nano Phase Size on Microstructure Evolution in Nanocomposite Ceramic Tool Materials

2013 ◽  
Vol 395-396 ◽  
pp. 162-165
Author(s):  
Hong Mei Cheng ◽  
Chuan Zhen Huang
Keyword(s):  
Microstructure Evolution ◽  
Simulation Method ◽  
Monte Carlo Simulation Method ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Material Systems ◽  
Phase Size ◽  
Mean Size ◽  
The Mean ◽  
Set Up

Monte Carlo simulation method of microstructure evolution in nanocomposite ceramic tool materials is set up. Two-phased material systems with the same area fractions but various sizes of nanoparticles are designed, and the processes of microstructure evolution are simulated. The influences of nanoparticle size on microstructure and grain growth are observed and discussed quantitatively. It is found that the mean size of matrix grains increases with the increase of nanophase size during simulation, and intragranular-type microstructure is more difficult to form. The material Al2O3/nanoSiC is developed and the simulated results are verified.

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