Carbon content effect on high-strain-rate tensile properties for carbon steels

摘要: Abstract For the improvement or development of more crashworthy metallic materials, effect each chemical composition on stress–strain behavior under dynamic tension should be understood phenomenologically. Such knowledge is essential for alloy designers and engineers. Formerly, present authors constructed a high-velocity tensile loading machine horizontal slingshot type to obtain relationships structural such as alloys, plastics composites at strain rate 1×10 3  s −1 . This same order car crash street. Using this apparatus usual material testing machine, seven carbon steels C content ranging 0.14–0.54 wt% were tested four rates −3 , −2 From curves obtained, mechanical properties evaluated. Especially, even high rate, yield stress ultimate strength could predicted by an empirical equation quasi-static tests in consideration Mn contents.