Author(s): Mária Mihaliková | Miroslav Német | Pavol Zubko | Ľubomír Ambriško | Ladislav Pešek
Journal: Materials Engineering
ISSN 1335-0803
Volume: 18;
Issue: 3;
Start page: 93;
Date: 2011;
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Keywords: Hardness | Videoextensometry | Mechanical properties | Automotive steel sheets | Increment deformation
ABSTRACT
The paper deals with examination of relation between the hardness and the size of plastic zone during the tensile loading. UCI (Ultrasonic Contact Impedance) micro-hardness method was used for hardness measurements. Deformation was evaluated by non-contact extensometry method – videoextensometry. The result present existence of the power lawl relation between hardness and plastic deformation: HV = HV(p)+ kE^a. Hot rolled sheet and thin automotive sheet were investigated.
Journal: Materials Engineering
ISSN 1335-0803
Volume: 18;
Issue: 3;
Start page: 93;
Date: 2011;
VIEW PDF
DOWNLOAD PDF Original pageKeywords: Hardness | Videoextensometry | Mechanical properties | Automotive steel sheets | Increment deformation
ABSTRACT
The paper deals with examination of relation between the hardness and the size of plastic zone during the tensile loading. UCI (Ultrasonic Contact Impedance) micro-hardness method was used for hardness measurements. Deformation was evaluated by non-contact extensometry method – videoextensometry. The result present existence of the power lawl relation between hardness and plastic deformation: HV = HV(p)+ kE^a. Hot rolled sheet and thin automotive sheet were investigated.
