A Constitutive Model for Hot Pressing of Powders

作     者：Rongde GE (Dept. of Nonferrous Metallurgy, Central South University of Technology, Changsha, 410083, China) 

作者机构：Central South Univ of Technology Changsha China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1994年第10卷第5期

页      面：374-380页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：A Constitutive Model for Hot Pressing of Powders 

摘      要：Based on an assumption that the effective pressure in hot pressing related to the applied pressure varies with the relative density of the compact in a power law form. a three-dimensional viscoelastic model that depicts the viscoelastic detormation behaviour of powder compacts in hot pressing has been developed. It has been shown by the experimental data that the proposed model in which the parameters are determined by means of nonlinear regression analysis can be used to describe the density-time relationship for the hot pressing of pure magnesium oxide and atomized iron powders and to estimate the end-point relative density of the compact.