Dynamic Mechanical Behavior and Constitutive Relation of 03Cr21Ni14Mn5Mo3N Stainless Steel
-
摘要: 以准静态压缩性能作为参考，通过气枪式霍普金森压杆试验，研究了03Cr21Ni14Mn5Mo3N不锈钢在常温20℃和低温-40℃两种环境条件下的动态力学性能，并基于Johnson-Cook本构模型建立了03Cr21Ni14Mn5Mo3N不锈钢本构关系。结果表明，准静态及高应变率下，03Cr21Ni14Mn5Mo3N不锈钢的强度均随着温度的降低呈升高趋势；与准静态相比，03Cr21Ni14Mn5Mo3N不锈钢在高应变率下显示出明显的应变率硬化效应；在1 500/s~4 000/s高应变率范围内，随应变率的增加，钢板动态强度略有增加，但应变率硬化效应不明显。Abstract: With the quasi-static compression property as reference, the dynamic mechanical property of 03 Cr21 Ni14 Mn5 Mo3 N stainless steel was studied in the high strain rate at two temperatures of 20℃ and-40℃ through the Johnson-Cook pressure bar test in the form of air gun. On the basis of Johnson-Cook model, the constitutive relation of 03 Cr21 Ni14 Mn5 Mo3 N stainless steel was established. The results showed that the strength of the 03 Cr21 Ni14 Mn5 Mo3 N stainless steel in the two conditions of quasi-static and high strain rate went up with the declining of the temperature. Different from the quasi-static, the 03 Cr21 Ni14 Mn5 Mo3 N stainless steel represented the obvious hardening effect with high strain rate. The dynamic strength improved when the strain rate rose from 1 500/s to 4 000/s, but the improvement of hardening effect was not obvious.
-
Keywords:
- stainless steel /
- dynamic /
- mechanical property /
- constitutive relation
-
-
[1] 尚兵, 盛精, 王宝珍, 等.不锈钢材料的动态力学性能及本构模型[J].爆炸与冲击, 2008, 28(6):527-531. [2] 何著, 赵寿根, 杨嘉陵, 等.0Cr17Ni4Cu4Nb不锈钢动态力学性能研究[J].材料科学与工程学报, 2007, 25(3):418-421. [3] 吴亮, 胡毅森, 纪翔, 等.马氏体沉淀硬化不锈钢FV520B动态力学性能及本构模型的研究[J].机械强度, 2018, 40(3):584-588. [4] WULF G L.The high strain rate compression of 1023 and 4130 steels[J].International Journal of Mechanical Sciences, 1978, 20(12):843-848.
[5] JOHNSON G R, COOK W H.A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures[J].Engineering Fracture Mechanics, 1983, 21:541-548.
计量
- 文章访问数: 155
- HTML全文浏览量: 16
- PDF下载量: 17
下载:
