Penetrating performance and “self-sharpening” behavior of fine-grained tungsten heavy alloy rod penetrators
作者： Rongmei Luo , Dewu Huang , Mingchuan Yang , Enling Tang , Meng Wang
DOI: 10.1016/J.MSEA.2016.08.060
关键词:
摘要: Abstract Rod penetrators with 95W–3.75Ni–1.25Fe fine-grained tungsten heavy alloy (fine-grained 95W) and conventional rod the same chemical composition (conventional were subjected to ballistic impact compare their penetration performance. “Self-sharpening” behavior an average 10.5% increase in depth compared 95W penetrators. An acute head remained on SEM results revealing many micro-cracks small debris surface layer of head. The stress-strain curves collected Split Hopkinson Pressure Bar (SHPB) experiment showed that critical failure strain values 0.12 0.39 at rate 2×10 3 s −1 3.9×10 , respectively, approximately 40% 10% lower than those 95W. dynamic strength 2100 MPa 2520 MPa, which 500 MPa 520 MPa higher relationship among microstructure, mechanical property “self-sharpening” is discussed this work.
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