Anti-penetration performance of high entropy alloy–ceramic gradient composites
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第11期
论文作者：Wen-rui Wang Hui-fa Xie Lu Xie Han-lin Li Xiao Yang Yi-nan Shen
文章页码：1320 - 1328
摘 要：A high-entropy alloy–ceramic gradient composite of TiC–TiB2/75vol% Al0.3 CoCrFe Ni 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 Al0.3 CoCrFe Ni 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.
Wen-rui Wang1，Hui-fa Xie1，Lu Xie1，Han-lin Li2，Xiao Yang3，Yi-nan Shen4
1. School of Mechanical Engineering,University of Science and Technology Beijing2. Loughborough Design School,Loughborough University3. Technical Institute of Physical and Chemistry,Chinese Academy of Sciences4. School of Energy and Environmental Engineering,University of Science and Technology Beijing
摘 要：A high-entropy alloy–ceramic gradient composite of TiC–TiB2/75vol% Al0.3 CoCrFe Ni 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 Al0.3 CoCrFe Ni 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.
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