中南大学学报（自然科学版）2017，Vol.48Issue(11)：2851-2858,8.DOI:10.11817/j.issn.1672-7207.2017.11.002
表面扩散机制下金属纤维烧结过程的数值模拟
Numerical simulation of metal fiber sintering by surface diffusion
摘要
Abstract
Based on the oval-oval structure of different sections of two intersecting metal fiber sintered node, the surface diffusion model of the sintering process of metal fibers was established. This model, which was the nonlinear partial differential equations, could be numerically solved by finite difference method, and the numerical simulation of the forming process of metal fiber sintered node could be realized. Focus on the metal fibers with the angle of 0°, 45°, and 90°, the numerical simulations were conducted, respectively. The results show that the sintering neck radius quickly grows in the initial sintering stage, and then the growth rate decreases gradually in the following sintering process. Under the condition of the same fiber angle, the neck radius at the section of the bisector of acute angle grows much faster than that at the section of the bisector of obtuse angle. Under the condition of different fiber angles, the larger the fiber angle is, the faster the growth rate of sintering neck at the section of the bisector of obtuse angle grows, and the situation at the section of the bisector of acute angle is opposite.关键词
金属纤维/表面扩散/有限差分/烧结颈Key words
metal fiber/surface diffusion/finite difference/sintering neck分类
矿业与冶金引用本文复制引用
宋敏,郑洲顺,谌东东,曹稳,傅太白,汤慧萍..表面扩散机制下金属纤维烧结过程的数值模拟[J].中南大学学报（自然科学版）,2017,48(11):2851-2858,8.基金项目
国家自然科学基金资助项目(51174236) （51174236）
国家重点基础研究发展计划(973计划)项目(2011CB606306) （973计划）
金属多孔材料国家重点实验室开放基金资助项目(PMM-SKL-4-2012) （PMM-SKL-4-2012）
中南大学研究生创新项目(2016zzts220) (Project(51174236) supported by the National Natural Science Foundation of China （2016zzts220）
Project(2011CB606306) supported by the National Basic Research Development Program (973 Program) of China （2011CB606306）
Project(PMM-SKL-4-2012) supported by the National Key Laboratory Open Program of Porous Metal Material of China （PMM-SKL-4-2012）
Projects(2016zzts220) supported by the Innovation Project of Central South University) （2016zzts220）
