Anti-penetration performance of high entropy alloy-ceramic gradient composites

作者：Wang, Wen-rui^*; Xie, Hui-fa; Xie, Lu; Li, Han-lin^*; Yang, Xiao; Shen, Yi-nan

来源：International Journal of Minerals,Metallurgy and Materials, 2018, 25(11): 1320-1328.

DOI：10.1007/s12613-018-1685-5

• combustion synthesis
• gradient composite
• anti-penetration performance
• numerical simulation

A high-entropy alloy-ceramic gradient composite of TiC-TiB2/75vol% Al0.3CoCrFeNi was successfully prepared by combustion synthesis under an ultra-high gravity field, which is a low-cost method with high efficiency. The ceramic particles were gradient distributed in the Al0.3CoCrFeNi matrix, and the hardness of the composite material gradually decreased along the thickness direction. The anti-penetration performance of the gradient composites was simulated using the ANSYS/LS-DYNA explicit simulation program. The results demonstrate that the distribution of the ceramic particles strongly affected the mechanical properties and the anti-penetration performance of the composites. With the same total ceramic volume fraction, the gradient composites exhibit better anti-penetration performance than the corresponding ceramic-metal interlayer composites. The more uneven the ceramic distribution, the greater the elastic modulus and yield stress of the surface layer and, thus, the better the anti-penetration performance.

• 出版日期2018-11
• 单位北京科技大学; 中国科学院理化技术研究所