摘要
为了研究高强度装甲钢的穿甲破坏机理，采用１２．７ｍｍ弹道枪垂直射击１５ｍｍ厚的Ｍｎ－Ｃｒ－Ｎｉ－Ｍｏ－Ｂ高强度装甲钢板，弹丸速度在３５０～５００ｍ／ｓ内变化。分析了绝热剪切带的产生及其对冲塞穿甲的作用。试验结果表明，当弹靶参数一定时。高强度钢板中易发生由绝热剪切导致的冲塞穿甲。由微观组织和硬度测试证明绝热剪切带是一种转变带。转变带内的裂纹和沿转变带扩展的裂纹对装甲钢的破坏影响极大。
A series of ballistic experiments was carried out wherein spinning ar-mour piercing projectiles of core diameter 12.7mm were fired at high strength steel plate of 15mm thickness in order to investigate the perforation mechanism of Mn-Cr-Ni-Mo-B high strength armour steel.The projectile velocity varies from 350 to 500m/s in normal impact It is shown by the results that plugging failure due to the adiabatic shearing occurs in the high strength steel armour plate. Adiabatic shearing resulted in a transformed band with higher microhardness value and fine lath marten-site. The cracks initiated in the transformed band and the cracks propagating along the band play an very important role in the failure of the high strength armour steel plate subjected to projectile impact.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1995年第6期38-43,共6页
Journal of Iron and Steel Research
关键词
装甲钢
冲塞
绝热剪切带
裂纹
armour steel plugging adiabatic shear band crack
