通过弹钢材料提升榴弹威力的原理与方法

针对典型的自然破片杀伤榴弹，研究通过弹丸壳体材料提升威力的原理与方法，为弹钢材料创新、发展与应用等提供理论和技术支撑。采用理论推导与试验研究相结合的手段，提出了通过调控弹钢材料的晶粒平均直径■和破碎尺度参数μ、实现有效破片数暨杀伤威力提升的原理与方法。试制了两种新弹钢40SiMn2X和50SiMnX,选择一种122 mm榴弹弹丸结构，进行制式壳体材料50SiMnVB和两种新材料各2发的静爆威力对比试验。研究结果表明，所提出的榴弹威力提升原理与方法具有科学性、合理性和实用性；新弹钢40SiMn2X和50SiMnX力学性能优越，对轻型装甲车辆和人员目标的杀伤威力半径比50SiMnVB分别提高了31.6%和12.3%,且均能够兼顾两种目标实现共同提升，具有重要的工程应用前景。

Principle and Method of Enhancing Grenade Power by Changing the Steel Material

This study investigates the principle and method of enhancing the power of natural fragmentation projectiles (warheads) such as grenades through changing the steel material, providing theoretical and technical support for the innovation, development, and application of shell materials. Through theoretical deduction and experimental study, the principle and method are developed-to improve power by adjusting the grain size d and the scale parameter μ of the steel. Based on this, two new steel materials for projectiles, 40SiMn2X and 50SiMnX, are produced, and a 122 mm grenade projectile structure is selected for tests. Static explosive power tests are conducted using standard shell material 50SiMnVB and two new materials for comparison. The results show that the principle and method of enhancing grenade power by changing steel material are scientific, reasonable, and practical. The new shell steel 40SiMn2X and 50SiMnX exhibit excellent mechanical properties, and have increased the radius of power for light armored vehicles and personnel targets by 31.6% and 12.3%, respectively. Both two materials have achieved progress in applications against both targets, showing important application value.