CREEM2024

CREEM 2024 - XXX Congresso Nacional de Estudantes de Engenharia Mecânica

METODOLOGIA PARA MEDIÇÃO DE MICRODUREZA VICKERS EM MATERIAIS METÁLICOS COM MICROESTRUTURA EXTREMAMENTE REFINADA

Submission Author: Mateus Turíbio E Silva Moreira , RJ
Co-Authors: Mateus Turíbio E Silva Moreira, Bruno Paiva, Frederico Garcia Bindi de Lacerda, André Pimenta
Presenter: Mateus Turíbio E Silva Moreira

doi://10.26678/ABCM.CREEM2024.CRE2024-0086

 

Abstract

The aim of this work is to evaluate a Vickers microhardness measurement methodology with a load of 5 grams-force (gf) for metallic materials with extremely small grains. The material used in this study was a sample of GTAW welded joints in a hyperduplex steel. The sample was indented with the specified load of 5gf. After the sample was indented on the microhardness tester, scanning electron microscopy (SEM) techniques were used to characterize and record the indentations. Images taken by optical microscopy (OM) were also acquired for comparison with the quality of the SEM images. The ImageJ software was used to measure the diagonals of the indentation. It was observed that the precision in performing the measurements using SEM images is better than those made directly on the equipment.

Keywords

Microhardness, Vickers, SEM, Hyperduplex

 

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