Journal
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
Volume 24, Issue 7, Pages 724-729Publisher
JOURNAL IRON STEEL RESEARCH EDITORIAL BOARD
DOI: 10.1016/S1006-706X(17)30109-7
Keywords
30CrMnSiNi2A steel; Dynamic mechanical behavior; Split Hopkinson pressure bar; High temperature; High strain rate; Ultra-high strength steel
Categories
Funding
- National High Technology Research and Development Program of China [2014AA041504]
- National Natural Science Foundation of China [51605161]
Ask authors/readers for more resources
During high speed machining in the field of manufacture, chip formation is a severe plastic deformation process including large strain, high strain rate and high temperature. And the strain rate in high speed cutting process can be achieved to 10(-5) s(-1) 30CrMnSiNi2A steel is a kind of important high-strength low-alloy structural steel with wide application range. Obtaining the dynamic mechanical properties of 30CrMnSiNi2A under the conditions of high strain rate and high temperature is necessary to construct the constitutive relation model for high speed machining. The dynamic compressive mechanical properties of 30CrMnSiNi2A steel were studied using split Hopkinson pressure bar (SHPB) tests at 30-700 degrees C and 3 000-10 000 s(-1). The stress-strain curves of 30CrMnSiNi2A steel at different temperatures and strain rates were investigated, and the strain hardening effect and temperature effect were discussed. Experimental results show that 30CrMnSiNi2A has obvious temperature sensitivity at 300 degrees C. Moreover, the flow stress decreased significantly with the increase of temperature. The strain hardening effect of the material at high strain rate is not significant with the increase of strain. The strain rate hardening effect is obvious with increasing the temperature. According to the experimental results, the established Johnson-Cook (J-C) constitutive model of 30CrMnSiNi2A steel could be used at high strain rate and high temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available