Rod-shaped samples of maraging steel were additively fabricated in vertical and horizontal directions using laser powder bed fusion technique. The samples were first aged at 490 °C for 6 h and then subjected to dynamic compressive tests using Split Hopkinson Pressure Bar apparatus. The dynamic compression tests were conducted on vertical samples at strain rates of 190, 460, 810, 1100, 1300 s⁻¹. However, the high strain rate tests were performed at strain rates of 120, 615, 745, 890, 2200 s⁻¹ on horizontal samples. After applying the compressive impact loads on the samples, it was found that although horizontally built samples exhibit higher dynamic strength, vertically built samples show higher elongation during high-strain rate tests. Furthermore, fracture happened at a strain rate of 1300 s⁻¹ for vertical samples. However, for horizontally built samples, failure occurred at the strain rate of 2200 s⁻¹. Finally, the Johnson-Cook and Voyiadjis and Abed models, which take into account the contribution of strain softening and strain hardening were employed to simulate the high strain rate performance of vertical and horizontal maraging steels.

使用激光粉末床熔合技术在垂直和水平方向上增材制造马氏体时效钢棒状样品。样品首先在 490°C 下老化 6 小时，然后使用 Split Hopkinson 压力棒装置进行动态压缩测试。动态压缩试验在应变率为 190、460、810、1100、1300 s ^-1的垂直样品上进行。然而，高应变率测试是在 120、615、745、890、2200 s ^{-1的应变率下进行的}在水平样品上。在对样品施加压缩冲击载荷后，发现虽然水平构建的样品表现出更高的动态强度，但垂直构建的样品在高应变率测试中表现出更高的伸长率。此外，对于垂直样品，断裂发生在 1300 s ^{-1的应变速率下。}然而，对于水平构建的样品，失效发生在 2200 s ^-1的应变速率下。最后，考虑到应变软化和应变硬化的贡献的 Johnson-Cook 和 Voyiadjis 和 Abed 模型被用来模拟垂直和水平马氏体时效钢的高应变率性能。