3958 サブミクロン金粒子低温焼結体の引張特性評価におけるモデル化の検討(S21-4 微細構造体の設計と解析,S21 ナノ・マイクロ構造体の強度物性と信頼性)

概要

論文の詳細を見る
In this study, mechanical response of low temperature sintered body was examined. Tensile strength and elongation of the sintered body were evaluated experimentally. Because microstructure of sintered body affects several mechanical properties, cluster structure was simulated using DLA (diffusion-limited aggregation) model and tensile properties of cluster structure were extracted from finite element analysis. Comparing with experimental results, the validity of cluster model simulation was examined. Low temperature sintered body has lower tensile strength and elastic modulus because of network of clusters. Cluster structure depends on the porosity and the sintering temperature. Simulated elastic stiffness depends cluster structure and its value is lower than bulk. The fracture behavior of particles in clusters connects macroscopic tensile strength and elongation of sintered body. It agrees with the SEM observation of the fracture surface. Cluster of particles characterizes the macros copic mechanical properties of sintered body.
社団法人日本機械学会の論文
2006-09-15