摘要
采用系列截面法获取了纯铁晶粒组织的拓扑学数据,同时结合正常晶粒长大的Monte Carlo仿真,对三维晶粒拓扑学进行了研究。
The grain topology was investigated by the topological data from serial sectioning experiment on pure iron and simulation of grain growth with Monte Carlo method. The results show that the mean number of faces of pure iron =12.46 is different from other experimental data in literatures, such as β-brass, Al-Sn alloy, β-titanium, austenite grains of steel, etc. The reason is likely due to the variable surface tension and mobility, which are assumed to play an important role in the evolution of polycrystalline grain systems and thus exert influence on the topological characteristics of the grain network. For the distribution of the number of faces per grain and the grain size distribution, the data from Monte Carlo simulation is consistent with the data from pure iron, but different with the data from Al98Sn2 due to the segregation of Sn atoms to the grain boundary that possibly alter the grain growth process.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2013年第2期268-272,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50901008
50871017)
中国博士后科学基金(20090460209
201003050)
高等学校博士学科点专项科研基金(200800080003)
关键词
拓扑学
MONTE
Carlo仿真
平均晶粒面数
晶粒面数分布
晶粒尺寸分布
topology Monte Carlo simulation the mean number of grain faces the distribution of the number of faces per grain grain size distribution
