17 research outputs found
Estimation of the elasto-plastic properties of metallic materials from micro-hardness measurements
No full textOn the Variation of Hardness Due to Uniaxial and Equi-Biaxial Residual Surface Stresses at Elastic–Plastic Indentation
No full textThe Modified Rockwell Test: A New Probe for Mechanical Properties of Metals
No full textIn the present work a novel methodology is proposed, based on the combination of the Rockwell and the Vickers tests, to provide estimates of the mechanical properties of metal substrates. The analysis is based on some novel invariants obtained from the finite element solution of the Vickers indentation (the imprint diagonal relates to the maximum indentation depth and the residual indentation depth with the average pressure and the elastic modulus). Several other useful results are discussed and experiments are performed with a modified Rockwell apparatus on steel and aluminium alloys. The results are important for the interpretation of micro indentation tests. Inverting the indentation data, reasonably accurate results can be obtained for strain hardening properties for "power law" behaviour, whereas more complex strain hardening would require further investigation
Development of evaluation technique for microcharacteristics of thixoforged wrought aluminum alloy by nanoindention and atomic force microscopy
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Isotropic hardening curve characterization by the resultant profile of ball indentation tests
No full textCorrelation of spherical nanoindentation stress-strain curves to simple compression stress-strain curves for elastic-plastic isotropic materials using finite element models
No full textEvaluation of the tensile properties of a material through spherical indentation: definition of an average representative strain and a confidence domain
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