Evaluation of Limit Deformations of Zn Coated High Strength Steel

Miroslav Tomáš; Emil Evin; Stanislav Németh; Juraj Hudák

doi:10.4028/www.scientific.net/MSF.818.248

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HomeMaterials Science ForumMaterials Science Forum Vol. 818Evaluation of Limit Deformations of Zn Coated High...

Evaluation of Limit Deformations of Zn Coated High Strength Steel

Abstract:

The paper presents the evaluation of limit deformations by the tensile test of notched specimens to measure the left side of forming limit curve. The notch radii R5, R10, R17.5 and R25 were machined on the specimens of 40 mm in width. The limit deformations have been assessed for Zn coated high strength steel TRIP with thickness 0.76 mm. Two types of deformation grid were electrochemically etched on the specimens: circles with diameter of 2 mm and the pattern of dots with diameter 0.5 mm and spacing 1 mm. The tensile test of notched specimens has been also numerically simulated. The experimentally measured limit curves have been compared to the mathematic Swift-Hill model.

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Periodical:

Materials Science Forum (Volume 818)

Pages:

248-251

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.818.248

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Online since:

May 2015

Authors:

Miroslav Tomáš*, Emil Evin, Stanislav Németh, Juraj Hudák

Keywords:

Forming Limit Diagram, Limit Strain, Notched Specimen, Photogrammetric System

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