Effects of ZrO2 ceramics doped with varying content on the mechanical properties and energy release characteristics of W-Zr alloys

Abstract

A W-Zr alloy doped with ceramic powder W _54.5 Zr _35-x Ni _6.7 Fe _3.3 Mo _0.5 (ZrO _2 ) _x was prepared by powder metallurgy. The effects of the ceramic content on the dynamic and static compressive mechanical behavior and energy release properties of the alloy were studied. The results showed that the addition of ceramics enhanced the energy release characteristics of the W-Zr alloy, and made the alloy break more thoroughly and the fragment cloud distribute evenly. The reaction delay time was shorter and the energy release reaction was more complete. However, the maximum temperature of the alloy reaction decreased. In addition, the addition of ceramics improves the mechanical properties of the material, and its compressive strength is much higher than that of traditional W-Zr alloys.(ZrO _2 )1 exhibited good mechanical behavior and energy release characteristics. The aftereffect damage performance was further verified using a ballistic gun experiment. Ballistic gun test results showed that (ZrO _2 ) 1 can penetrate A92124 aluminum targets with a thickness of 2 mm at a speed of 809.3 m s ^−1 and ignite post-target absorbent cotton, with both penetration and post-target damage capabilities.

Keywords

• W-Zr alloy
• ZrO2 ceramics
• mechanical property
• releasing characteristic