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Densification Behavior of Mixed Metal Powders under High Temperature

혼합 금속 분말의 고온 치밀화 거동

  • Published : 2000.03.01

Abstract

Densification behaviors of mixed metal powder under high temperature were investigated. Experimental data of mixed copper and tool steel powder with various volume fractions of Cu powder were obtained under hot isostatic pressing and hot pressing. By mixing the creep potentials of McMeeking and co-workers and of Abouaf and co-workers originally for pure powder, the mixed creep potentials with various volume fractions of Cu powder were employed in the constitutive models. The constitutive equations were implemented into a finite element program (ABAQUS) to compare with experimental data for densification of mixed powder under hot isostatic pressing and hot pressing. Finite element calculations by using the creep potentials of Abouaf and co-workers agreed reasonably well with experimental data, however, those by McMeeking and co-workers underestimate experimental data as observed in the case of pure metal powders.

Keywords

Constitutive Model;Densification;Finite Element Analysis;Hot Isostatic Pressing;Hot Pressing;Mixed Metal Powders;Power-Law Creep

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