Study on melted and rapidly solidified layer of tungsten wire reinforced amorphous composite bullet core in high-speed penetration
The scanning electron microscopy observation,energy spectrum analysis and X-ray diffraction analysis of the melted and rapid-ly solidified layer formed in high-speed penetration of tungsten wire reinforced amorphous composite bullet core into the target plate,the temperature rise mechanism of the interface under bullet target interaction was studied.The results show that compared with traditional tungsten alloy,tungsten wire reinforced amorphous composite has better"self-sharpening"effect,and the penetration ability is effectively improved.The formation temperature of the melted and rapidly solidified layer should be higher than 1670 ℃,and the high temperature effect is helpful to improve its penetration ability.The composition of melted and rapidly solidified layer consists of target plate materials(Fe,Cr,Mn)and bullet core materials(Zr,Ti,Cu,Ni and W).The atom fraction of W is only 3.15％,and the W element mainly ex-ists in the melting or molten state in the melted and rapidly solidified layer.TiW phase exists in the rebounded materials when amorphous composite bullet core penetrator into the target plate.The huge impact of the bullet traget interaction causes the bullet-target material to be compressed and plastic deformed and fractured,which causes the temperature of the interface of traget interaction to rise sharply.
amorphous compositemelted and rapidly solidified layertemperature rise mechanismhigh-speed penetration
万方数据
维普
