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The (TiZrHfNbTaMo)C‐15 wt.% Co ceramics with excellent comprehensive properties were successfully prepared by vacuum liquid phase sintering. The effects of WC content on the grain size, microstructure, and mechanical properties were investigated. The results showed that WC was dissolved into (TiZrHfNbTaMo)C phase to form a seven‐component solid solution, and the independent WC phase disappeared. The addition of WC improved the wettability between the ceramic phase and the metal phase and promoted the densification of the ceramics. In addition, WC played a role in refining grains and inhibiting the grains growth to a certain extent. The comprehensive properties of ceramics were improved by solid solution strengthening and high entropy effect. When the WC content was 5 wt.%, the toughness reached the maximum of 9.41 ± 0.15 MPa·m1/2, and the hardness of the ceramic with 10 wt.% WC achieved the highest value of 18.18 ± 0.20 GPa. [ABSTRACT FROM AUTHOR]

The Al-27Si alloy was prepared using spray deposition and subsequently incorporated into Mg-Li alloy by vacuum melting furnace to produce a novel Mg-8Li-3Al-0.3Si (LA83–0.3Si) duplex alloy. The effect of final rolling deformation (30%, 40%, 50% and 60%) on the microstructure, mechanical properties, work hardening, and softening behavior was researched. Results indicated that the LA83–0.3Si alloy mainly comprised of α-Mg, β-Li, AlLi, and Mg 2 Si phases. The rolling deformation process induced elongation of the α-Mg and β-Li phase along rolling direction, facilitating the formation of α/β laminar structure, notably enhancing the strength and ductility. Increased final rolling deformation further prompted the formation of the α/β laminar structure and refined the precipitates. Consequently, the LA83–0.3Si alloy's strength progressively increased while elongation slightly diminished. At 60% deformation, the ultimate tensile strength of the LA83–0.3Si alloy reached 331 MPa, with the elongation sustained to 10.9%. The rolling process led to a reduction in the work hardening rate and an increase in the softening rate. With the increase of the final rolling deformation, the work hardening rate decreases and the softening rate further increases. However, the work hardening rate increases, and the softening rate decreases due to the decreasing of the hardness ratio of α-Mg and β-Li phases at 60% deformation. [Display omitted] • The low-sized granular Mg 2 Si phase was formed by adding Al-27Si master alloy prepared by spray deposition to Mg-Li alloy. • The highest strength of the alloy sheet with large final rolling deformation is 331 MPa, and the EL is maintained at 10.9%. • The layer structure weakens the hardening behavior of Mg-Li alloy and improves the softening behavior. [ABSTRACT FROM AUTHOR]

W-Cu immiscible bimetallic composite is an electrically and thermally conductive material with high temperature service potential. In present work, to improve its load bearing capacity, Ti and Zr were introduced to enhance the W-Cu interfacial bond strength and to achieve solid solution reinforcement. By infiltration of Cu-Ti/Zr alloy with different compositions into the W skeleton, both the strength and hardness were enhanced without sacrificing ductility. The Ti/Zr incorporation transformed the incoherent interface of W-Cu to a (W-Ti/Zr)-(Cu-Ti/Zr) semi-coherent interface. By utilizing the EDS technique, significant compositional interdiffusion between immiscible metals was revealed. Moreover, the introduction of Ti/Zr purified grain boundaries by capturing the reactive oxygen to generate TiO 2 and ZrO 2 , which inhibited W-Ti/Zr grain growth by Zenner pinning. As the alloy content rose from 0 wt% to 5 wt%, the average grain size of the W-Ti/Zr (or W) alloy decreased from 2.14 µm to 1.40 µm. It is noteworthy that the alloying with 2.50 wt% Ti reached peak microhardness (417 HV), bending strength (1546 MPa), and ultimate tensile strength (532 MPa). However, the presence of Cu-Ti/Zr solid solution and oxide particles increased the scattering effect of electrons in the Cu matrix, leading to a falling in electrical conductivity. • Well-bonded W-Cu-Ti/Zr alloys were fabricated by skeleton infiltration strategy. • The W-Cu-Ti/Zr alloys possessed high strength and great strain-to-failure. • Second-phase particles affected microstructure and overall mechanical properties. • Multiple strengthening mechanisms of W-Cu-Ti/Zr were analyzed in detail. [ABSTRACT FROM AUTHOR]