0.5Nb1.5TiV2Zr0.5高熵合金，并研究了其微觀組織、密度及力學性能。結(jié)果表明，Al0.5Nb1.5TiV2Zr0.5合金由為90.6%（體積分數(shù)）的體心立方相和9.4%（體積分數(shù)）的C14-Laves第二相組成。合金基體相富含Ti和V，第二相富含Al和Zr。合金的密度為6284 kg/m3，維氏硬度為5197.9 MPa。合金的屈服強度隨溫度升高而降低，由室溫下1082.9 MPa降低到1073 K下的645.0 MPa。壓縮應變由室溫下的27.20%降低到873 K下的14.94%，這與合金中原子間的相互作用力隨溫度升高而降低有關(guān)。在1073 K時合金應變超過50%，表現(xiàn)出良好的塑性而未發(fā)生斷裂。壓縮測試結(jié)果表明，合金韌脆轉(zhuǎn)變溫度在873~1073 K之間。;The Al0.5Nb1.5TiV2Zr0.5 high entropy alloy was prepared by vacuum arc melting, and its microstructure, density, and mechanical properties were investigated. Results show that Al0.5Nb1.5TiV2Zr0.5 alloy consists of 90.6vol% body-centered cubic phase and 9.4vol% C14-Laves secondary phase. The matrix phase of the alloy is rich in Ti and V, and the secondary phase is rich in Al and Zr. The alloy has a low density of 6284 kg/m3 and Vickers hardness of 5197.9 MPa. The yield strength of alloy is decreased with increasing the temperature: it decreases from 1082.9 MPa at room temperature to 645.0 MPa at 1073 K. The compressive strain decreases from 27.20% at room temperature to 14.94% at 873 K, which is related to the decrease in atomic interaction force when the temperature rises. At 1073 K, the compressive strain of alloy exceeds 50%, indicating the good plasticity without fracture. The results of compression tests show that the ductile-brittle transition temperature ranges from 873 K to 1073 K."/>
0.5Nb1.5TiV2Zr0.5;高熵合金;微觀組織;硬度;壓縮性能;Al0.5Nb1.5TiV2Zr0.5;high entropy alloy;microstructure;hardness;compressive property"/>