Original scientific paper

Complex approach mechanical properties and formability assessment of selected deep-drawing steels

J. Štaba ; Faculty of Metallurgy, Technical University of Košice, Slovakia
M. Buršák ; Faculty of Metallurgy, Technical University of Košice, Slovakia

Abstract

The paper analyses the properties of deep-drawing sheets of three grades (R_e = 320 to 475 MPa), surface-treated with hot-dip galvanizing, made of microalloyed steels. Deformation properties are assessed using tensile tests, technological Erichsen or cupping tests. These characteristics, as well as the behaviour of the surface layer, are also investigated under dynamic conditions (modified Erichsen test using a drop tester), or using flat bending fatigue tests. Using microscopic analysis the deformation properties of the surface layer are evaluated. The results show the compactness of the surface layer, high deformation characteristics, as well as fatigue properties of the investigated deep-drawing materials, suitable for application in the automotive industry.

Keywords

deformation properties; fatigue limit; surface layer; technological tests; microalloyed steels

Hrčak ID:

35471

URI

https://hrcak.srce.hr/35471

Publication date:

1.7.2009.

Article data in other languages: croatian

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