A5108056064- Advanced materials and composites
- Advanced ceramic materials synthesis
- Intermetallics and Advanced Alloy Properties
- Orthopaedic implants and arthroplasty
- Metal and Thin Film Mechanics
- Aluminum Alloys Composites Properties
- High Temperature Alloys and Creep
- Diamond and Carbon-based Materials Research
- Tunneling and Rock Mechanics
- Metallurgical and Alloy Processes
- Quasicrystal Structures and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Titanium Alloys Microstructure and Properties
- Advanced Materials Characterization Techniques
- Microstructure and mechanical properties
Chalmers University of Technology
2023
Central South University
2021
Based on thermodynamic calculations, WC-Ni-Cr3C2 model alloys with high Ni content have been designed by fixing the carbon potential to form either graphite or eta (M6C) phases. The solubility of grain growth inhibitor Cr3C2 in binder phase has experimentally determined electron-probe microanalysis and compared calculations. Five different contents were prepared considering observed limit a Cr-free alloy. effects addition microstructures, corrosion resistance, mechanical properties WC-Ni...
The C content has a significant effect on the microstructure especially surface gradient structure of nitrogen-containing cermets. In literature, how affects cermets is unclear. Combining thermodynamic calculations and experimental techniques, series (Ti, Mo)(C, N)–Ni Ti(C, N)–Mo2C–Ni with different carbon contents were investigated experimentally. When sintering in denitrification atmosphere, binder phase shows trend high concentration low core concentration, thickness Ni-rich layer...
Thermal conductivity, one of critical properties for composite materials, constitutes an indispensable part high-efficient materials design. However, a quantitative model to describe the thermal conductivity two-phase composites has yet be developed. In this work, we proposed effective evaluation framework microstructure-based with key inputs from CALPHAD-type approach. Two-phase WC-Ni Ni–W solid-solution matrix were used as target system validate combined measurements. Calculated...
Abstract The preparation of Ti(C, N)-based cermets using (Ti, Me )(C, N) solid-solution powder instead the traditional + C mixtures has gradually become a popular research subject. By Nb)(C, and NbC powder, microstructures mechanical properties were investigated in present work with guidance thermodynamic calculations. calculations indicated that was thermodynamically less stable than N), which led to difference prepared NbC. cermet had no/weak core–rim structure. Moreover, surface...
Cr3C2, TaC and VC are the most widely used grain growth inhibitors (GGIs) in cemented carbides. The inhibition effectiveness formation of brittle carbides by over-doping these GGIs closely associated with their solubilities binder phase. A series WC-Ni-based "model alloys" high content phase different dopants have been designed based on thermodynamic calculations then prepared through conventional powder metallurgy method. subsequent microstructures Ni were characterized means scanning...
Excellent thermal conductivity is beneficial for the fast heat release during service of cemented carbides. Thus, a significant property carbides, considerably affecting their life. Still, there lack systematic investigation into two-phase WC-Co-Ni To remedy this situation, we integrated experiments and models to study its varying phase composition, temperature WC grain size. conduct experiments, samples with structure were designed via CALPHAD (Calculation Phase Diagrams) approach then...
Abstract Gasping the thermodynamic and phase diagram of materials being studied is essential for further guiding development process, like composition design, heat treatment optimization so on. Nb Sn are common alloying elements in Ti-based biomedical alloys. In this work, Ti-Nb-Sn system has been thermodynamically assessed based on experimental equilibria. A self-consistent description including two ternary compounds Ti 3 2 NbSn obtained. Based comparison between calculated equilibria,...