计量学报2026，Vol.47Issue(1)：94-101,8.DOI:10.3969/j.issn.1000-1158.2026.01.12
钕铁硼烧结致密化过程中的应力演变模拟及实验验证
Simulation and Experimental Verification of Stress Evolution during Sintering Densification of Nd-Fe-B
摘要
Abstract
Based on the Drucker-Prager Cap model,numerical simulation studies on the densification process of Nd-Fe-B blocks were carried out using ABAQUS software.By constructing the stress field analysis model before and after powder sintering,the stress distribution characteristics and microstructure evolution laws at different sintering temperatures were systematically compared,and the results were analyzed in conjunction with scanning electron microscopy.The research shows that within a reasonable temperature range,as the sintering temperature increases,the uniformity of stress distribution and relative density improves,and the probability of crack initiation decreases.At the same time,the residual stress obtained from numerical simulation is in good agreement with the experimental test results.This study provides important theoretical basis and practical guidance for the optimization of the preparation process of Nd-Fe-B permanent magnetic materials and the improvement of material performance.关键词
磁学计量/钕铁硼块/烧结/致密化/温度场/应力场/Drucker-Prager Cap模型Key words
magnetism metrology/Nd-Fe-B bulk/Sintering/densification/temperature field/stress field/Drucker-Prager Cap model分类
通用工业技术引用本文复制引用
孙博,宋涛,程芳,金文斌,邱文彬,柳楠,葛洪良,王睿,毛华云..钕铁硼烧结致密化过程中的应力演变模拟及实验验证[J].计量学报,2026,47(1):94-101,8.基金项目
国家重点研究计划项目(2023YFB3506500) （2023YFB3506500）
