DYNAMIC TENSILE BEHAVIOR OF 5CrMnMo AT ELEVATED TEMPERATURES
来源期刊：Acta Metallurgica Sinica2004年第4期
论文作者：X.Zan Y.M.Xia W.Huang X.Nie
Key words：elevated temperature; strain rate; tensile; 5CrMnMo;
Abstract: A new experimental technique has been developed for the performance of high temperature, high-strain rate tensile experiments in the self-designed tensile impact apparatus. This technique uses rapid contact heating method to heat the specimen to the desired temperature, thus avoids a significant temperature rise in incident and transmitted bars, and at the same time it is capable of retaining a nearly homogeneous temperature field within the specimen. As an illustration of its application, the hightemperature response of the forging die steel 5CrMnMo at high strain rates has been examined. Stress-strain curves are obtained for this material at strain rates ranging from 230s-1 to 1200s-1 and at temperature ranging from 25 to 600℃, respectively.For comparison, quasi-static experiments are performed over a slightly smaller range of temperatures.
X.Zan1，Y.M.Xia1，W.Huang1，X.Nie1
(1.Department of Mechanical Engineering, Key Laboratory of Mechanical Behavior and Design of Materials ,Hefei, University of Science & Technology of China, 230027 Hefei, China)
Abstract:A new experimental technique has been developed for the performance of high temperature, high-strain rate tensile experiments in the self-designed tensile impact apparatus. This technique uses rapid contact heating method to heat the specimen to the desired temperature, thus avoids a significant temperature rise in incident and transmitted bars, and at the same time it is capable of retaining a nearly homogeneous temperature field within the specimen. As an illustration of its application, the hightemperature response of the forging die steel 5CrMnMo at high strain rates has been examined. Stress-strain curves are obtained for this material at strain rates ranging from 230s-1 to 1200s-1 and at temperature ranging from 25 to 600℃, respectively.For comparison, quasi-static experiments are performed over a slightly smaller range of temperatures.
Key words:elevated temperature; strain rate; tensile; 5CrMnMo;
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