Dynamic Tensile Tests of Auto-Body Steel Sheets with the Variation of Temperature

This paper is concerned with the thermo-mechanical behavior of steel sheet for an auto- body including the temperature dependent strain-rate sensitivity. Tensile tests have been carried out with the high strength steel sheets such as SPRC35R, SPRC45E and TRIP60. The tensile tests were performed with the variation of the strain-rates from 0.001/s to 200/s and with the variation of environmental temperatures from -40℃ to 200℃. The thermo-mechanical response at the quasi-static state is obtained with the static tensile test and the one at the intermediate strain-rate is obtained with the high speed tensile test. Both the strain-rate and the temperature sensitivity of the flow stress are calculated for the quantitative evaluation of thermo-mechanical behavior of steel sheets. The results demonstrate that as the strain-rate increases, the variation of the flow stress becomes more dependent on the temperature. The results also indicate that the material properties of SPRC35R are more sensitive to the strain-rate and the temperature than those of SPRC45E and TRIP60.
Publisher
Trans Tech Publications
Issue Date
2006-10-11
Description

Proc of 9th S2P2006, Busan, Korea, 2006.

Keywords

Intermediate strain-rate; Strain-rate sensitivity; Temperature sensitivity; Dynamic strain aging

Citation

Solid State Phenomena Vols. 116-117 (2006) pp. 259-262

ISSN
1012-0394
URI
http://hdl.handle.net/10203/3439
Link
http://www.scientific.net/3-908451-26-4/259/
Appears in Collection
ME-Conference Papers(학술회의논문)
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