QUASISTATIC STRAIN RATE’S EFFECT TO THE PROPERTIES OF ADVANCED STEELS FOR AUTOMOTIVE INDUSTRY

Emil Evin, Miroslav Tomáš, Marek Výrostek

Abstract


The paper presents the findings of the strain rate effect, described in constitutive material models by strain rate sensitivity index m, to the strength and deformation material properties. These were evaluated from stress-strain diagrams recorded at tensile test using PC controlled testing machine TiraTEST 2300 according to STN EN ISO 6892-1. The high strength low alloyed steel H220PD, dual phase steel DP 600 and Trip steel RAK 40/70 were investigated at strain rates = 0.0021, 0.083 and 0.125 s-1. The results indicate major influence of the strain rate to the strength properties while only minor influence have been found when evaluate the deformation properties. The results also shown single phase materials are more sensitive to the strain rate than dual phase materials.

Keywords


tension test; strain rate; TRIP; HSLA; mechanical properties; deformation properties

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References


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DOI: http://dx.doi.org/10.12776/ams.v22i1.655

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SJR 2014: 0.502 - Q2 Metals and Alloys, 39./125.

SJR 2013: 0.309 - Q2 Metals and Alloys, 59./121.       

SJR 2012: 0.325 - Q2 Metals and Alloys, 33./90. (A)

SJR 2011: 0.363 - Q2 Metals and Alloys, 29./90. (A)

SJR 2010: 0.151 - Q3 Metals and Alloys, 68./90. (B)

SJR 2009: 0 - Q4 Metals and Alloys, 89./90. (C - according to the Slovak Journal Quality Criteria)

Indexed in: SCOPUS, Web of Science Core Collection, CROSSREF, GOOGLE SCHOLAR,CAMBRIDGE SCIENTIFIC ABSTRACTS, Committee on Publication Ethics (COPE)

IČO 00 397 610

EV 5174/15

p-ISSN 1335-1532, e-ISSN 1338-1156