晶须增韧陶瓷刀具材料微观组织的三维蒙特卡洛模拟  

Three-dimensional Monte Carlo Simulation of Whisker Reinforced Ceramic Tool Materials

作　　者：郭茂 黄传真[1] 

机构地区：[1]山东大学

出　　处：《工具技术》2017年第11期7-11,共5页Tool Engineering

基　　金：国家自然科学基金(51675312)

摘　　要：建立了晶须增韧陶瓷刀具材料的微观组织蒙特卡洛波茨模拟模型,模拟研究了晶须增韧陶瓷刀具材料的微观组织演变过程,分析了晶须分布状态、体积含量对微观组织演变行为的影响。结果表明:当晶须体积含量、长度及直径一定时,呈三方向分布的晶须对基体晶粒生长的抑制作用最强,两方向分布的晶须次之,单方向分布的晶须对基体晶粒的抑制作用最弱;当晶须长度和直径一定时,晶须对基体晶粒生长的抑制作用随着晶须体积含量的增加而增强。A Monte Carlo model of whisker reinforced ceramic tool materials is established. The micro-structure evolu- tion of whisker reinforced ceramic tool materials is simulated. The effects of whisker distribution and volume fraction on mi- cro-structure evolution are investigated. It is shown that the whiskers distributing along three directions can result in the strongest inhibition effect on matrix grain growth, the whiskers distributing along two directions can result in a stronger inhibition effect, and the whiskers distributing along one direction can result in the weakest inhibition effect, when the volume fraction and the aspect ratio of the whisker are kept constants. For a given aspect ratio of the whisker, the inhibition effect of the whiskers on the matrix grain growth can increase with an increase in the volume fraction of the whisker.

关 键 词：晶须增韧陶瓷刀具材料 微观组织演变 蒙特卡洛法 计算机模拟 

分 类 号：TG702[金属学及工艺—刀具与模具]