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Media type:
E-Article
Title:
Prediction of Tensile Properties Based on Hardness Measurement
Contributor:
Zubko, Pavol;
Pešek, Ladislav
Published:
Trans Tech Publications, Ltd., 2014
Published in:
Key Engineering Materials, 606 (2014), Seite 35-38
Language:
Without Specification
DOI:
10.4028/www.scientific.net/kem.606.35
ISSN:
1662-9795
Origination:
Footnote:
Description:
The contribution deals with prediction of tensile properties based on measurement of microhardness. First of all, the database of stress strain, s-e vs. hardness data was created. Tensile strength, yield strength, ductility and parameters of Ludwig-Hollomon equation σ = σ0+kεn ; k, n were correlated with hardness. Various hardness values found in literature were recalculated to Brinell hardness. In tensile testing measured s-e curves were compared with that obtained from the correlation. The investigated materials were API 5 L grade steels X70 after different deformation exposition. The results give good agreement between compared data. The most difference between estimated and measured curve is in area of yield strength, because of Lüders deformation on investigated steel.