Determination of crash-relevant material parameters by dynamic tensile tests
暂无分享,去创建一个
The mechanical properties of eight different steels, representing the wide range of steels for automotive application, are determined by accomplishing high speed tensile tests using flat sheet specimens. The steels chosen for investigations are deep drawing grade DC04, high strength steel ZStE340, three dual phase steels with strengths of 600, 800 and 1000 MPa, a TRIP steel and two austenitic stainless steels 1.4301 and 1.4318. Tests are carried out at five different strain rates within the range of 5.10 -3 and 200 s -1 , all at room temperature. The results show different strain rate sensitivities according to the different grades of steel. The TRIP steel and both stainless steels show a great potential for energy consumption, when tested at high strain rates.
[1] R. G. Davies,et al. Physical Metallurgy of Automotive High-Strength Steels , 1979 .
[2] E. El-Magd,et al. Influence of strain rate on ductility of metallic materials , 1997 .
[3] Hiroaki Ohsawa,et al. Evaluation of strain-rate sensitivity in superplastic compressive deformation , 1997 .
[4] John W. Hutchinson,et al. Influence of strain-rate sensitivity on necking under uniaxial tension , 1977 .