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Journal of Porous Media

ISSN for PRINT: 1091-028X

Institutional price:	$713.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

2007, Volume10

111 pages

Issue price - $99.00

Identification of Viscoplastic Behavior of Metal Powders Using Pressureless Sintering Results

Gholamreza Aryanpour
Department of Materials Engineering, Isfahan University of Technology, 84156 Isfahan, Iran

Mohammad-Hasan Abbasi
Department of Materials Engineering, Isfahan University of Technology, 84156 Isfahan, Iran

ABSTRACT

The phenomenological viscoplastic modeling introduced by Abouaf et al. (1988) for porous solids is used as the material constitutive law at elevated temperatures. Before applying the model, its parameters should be identified. Part of the model parameters is classically identified by hot isostatic pressing (HIP) experiments. This work presents the possibility of applying the viscoplastic modeling to the process of pressureless sintering. Therefore an expression for the material densification rate during this process is derived. This expression gives, obviously, the possibility of parameter identification by the experiments of pressureless sintering instead of by HIP experiments. This task has been done for the case of 316L stainless steel compact.