A5077031690- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Microstructure and mechanical properties
- Magnesium Alloys: Properties and Applications
- Metallurgy and Material Forming
- Semiconductor materials and devices
- Ga2O3 and related materials
- Anodic Oxide Films and Nanostructures
- Hydrogen Storage and Materials
- High Temperature Alloys and Creep
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Advancements in Battery Materials
- Advanced ceramic materials synthesis
- Intermetallics and Advanced Alloy Properties
- MXene and MAX Phase Materials
- Boron and Carbon Nanomaterials Research
Central South University
2018-2023
The present study designed a set of extrusion dies with unequal bearing lengths to investigate the deformation behavior 2195 Al-Li alloy. With standard deviation velocity field (SDV) and force as optimization objectives, process parameters (billet temperature, die temperature speed) were optimized using Taguchi method orthogonal test. results indicate that billet is most significant factor affecting SDV force, range 1.287 7.076, respectively. Furthermore, optimal determined 420 °C, 410 °C...
The structural stabilities and thermal properties of η′ η phase at high temperature pressure were investigated via first principles calculations combined with quasi-harmonic Debye approximation (QHA). calculated results illustrate possess formation enthalpy lower stability temperature, which may transits to equilibrium range 510–520 K. thermodynamic indicate exhibits better than temperature. thermoelastic estimated based on the temperature-dependent elastic constants Cij(T), it is revealed...
Medium temperature compressions were implemented in the range of 433–593 K and 0.001–5 s−1 to reveal workability dynamic restoration mechanisms quenched Al-6.2Zn-2.1Mg-0.15Zr alloy. The activation energy evolution with processing parameters was inspected through modified kinetic equation that derived by integrally considering strain deformation parameters, results suggested energies decreased increasing rate while less affected increase at a specific condition. 3D map constructed optimize...
The structural stability, electronic structures and elastic properties of the strengthening precipitates, namely Al 3 Zr, MgZn 2 , CuMg Cu, present in 7055 aluminum alloy were investigated by first-principles calculations based on density functional theory (DFT). optimized parameters are good agreement with literature values available. It is found that Zr has strongest alloying ability while for its stability worst. calculated results indicate covalent bonding dominant cohesion whereas...
Medium temperature compression of Al-6.2Zn-2.1Mg-0.15Zr alloy in quenched state was investigated with the deformation and strain rate range 433-593 K 0.001-5 s -1 , respectively. A modified kinetic equation activation energy derived by integrally considering parameters, value at 0.475 estimated as 318.674 kJ/mol. Also influences processing conditions on combining workability were discussed. The 3D map constructed to optimize regions, which two instable domains yielded distinct microscopic...