Evaluation Of The Flow Curve Of Metallic Materials By Means Of Spherical Indentation
Author(s)
M. Beghini, L. Bertini & V. Fontanari
Abstract
Evaluation of the flow curve of metallic
materials by means of spherical indentation
M. Beghini*, L.Bertini*, V. Fontanarf
'' Dip. Ingegneria Meccanica, Nucleare e della Produzione - Universita
di Pisa -Italy
T __
Dip. Ingegneria del Materiali - Universita di Trento -Italy
Abstract
A numerical approach aimed at evaluation of the stress-strain curve for metallic
materials starting from the results of instrumented spherical indentation is
presented. The spherical indentation process for materials having different
a-e curves was modelled by means of a finite elements analysis. It was verified
that the shape of the indentation crater depended upon the hardening properties
of the materials. By means of proper use of these results, an iterative procedure
was set up, which allows the a-e curve to be obtained with satisfactory accuracy
for a large number of materials.
Introduction
When a small amount of material is available or destructive tes
Keywords
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