Numerical Optimization for the Geometric Configuration of Ceramics Perform in HCCI/ZTAP Wear-Resistant Composites Based on Actual Particle Model

Nanoscale Research Letters

Tianlong Lu¹  Yehua Jiang¹  Xiaoyu Chong¹  Jing Feng¹  Ruiju Xu²  Jiankang Zhang³ 

[1] Faculty of Materials Science and Engineering, Kunming University of Science and Technology, 650093, Kunming, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, 650093, Kunming, China;Kunming Institute of Physics, 650223, Kunming, China;Sino-Precious Metals Holding Co., Ltd., 650106, Kunming, China;

关键词: Wear-resistant composites;    Finite element analysis;    Equivalent grain model;    Thermal stress;    Compressive stress;   

DOI  :  10.1186/s11671-021-03514-1

来源: Springer

【 摘 要 】

In order to reduce the thermal stress in high chromium cast iron (HCCI) matrix composites reinforced by zirconia toughened alumina (ZTA) ceramic particles, finite element simulation is performed to optimize the geometric configuration of ceramics perform. The previous model simplifies the overall structure of the ceramic particle preform and adds boundary conditions to simulate the particles, which will cause uncontrollable error in the results. In this work, the equivalent grain models are used to describe the actual preform, making the simulation results closer to the actual experimental results. The solidification process of composite material is simulated, and the infiltration between molten iron and ceramic particles is realized. Thermal stress in solidification process and compression stress distribution are obtained. The results show that adding 10-mm round holes on the preform can improve the performance of the composite, which is helpful to prevent the cracks and increases the plasticity of the material.

【 授权许可】

CC BY