INDENTATION SIZE EFFECT OF HEAT TREATED ALUMINUM ALLOY

Authors

  • Jozef Petrík a:1:{s:5:"en_US";s:127:"Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice";}
  • Peter Blaško Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice
  • Andrea Vasilňaková Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice
  • Peter Demeter Institute of Metallurgy, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice
  • Peter Futaš Institute of Metallurgy, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice

DOI:

https://doi.org/10.12776/ams.v25i3.1310

Keywords:

aluminium alloys, microhardness, ISE, annealing

Abstract

The aim of the submitted work is to study the influence of applied  loads ranging from 0.09807 N to 0.9807 N on measured values of micro-hardness of heat treated aluminum alloy 6082. The influence of applied load on a measured value of micro-hardness was evaluated by Meyer’s index n, PSR method and by Analysis of Variance (ANOVA).  The influence of the load on the measured value of micro-hardness is statistically significant and the relationship between the applied load and micro-hardness manifests the moderate reverse ISE. As the temperature of the solution treatment rises, the YS/UTS ratio and also Meyer’s index n, measured and “true hardness“  increase. On the other hand, its effect on the plastic properties of the alloy is ambiguous.

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Published

2019-09-25