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http://dx.doi.org/10.3795/KSME-A.2004.28.7.930

Constitutive Models for Final Stage Densification of Powder Compacts with Power-Law Creep Deformation  

Yang, Hoon-Chul (포항공과대학교 대학원 기계공학과)
Kim, Ki-Tae (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.7, 2004 , pp. 930-939 More about this Journal
Abstract
Constitutive models for final stage densification of metal powder compacts with power-law creep deformation were investigated. The constitutive models were implemented into a finite element program (ABAQUS) by using user subroutine CREEP and, from FEM results, useful densification curves were obtained when hydrostatic and uniaxial stress were applied to the powder compacts at various pressures and temperatures. Because the densification behavior varied as the constitutive models, the equivalent stress surface on each constitutive equation was investigated to analyze the difference of densification behavior.
Keywords
Creep Potential; Metal Powder; Final Stage Densification; Power-Law Creep; Finite Element Analysis; Constitutive Model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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