A5057750262- High Temperature Alloys and Creep
- Microstructure and mechanical properties
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Aluminum Alloy Microstructure Properties
- Additive Manufacturing Materials and Processes
- Surface Treatment and Residual Stress
- High Entropy Alloys Studies
- Hydrogen embrittlement and corrosion behaviors in metals
- Titanium Alloys Microstructure and Properties
- Metal Alloys Wear and Properties
- Advanced materials and composites
Lanzhou University of Technology
2019-2023
China Iron and Steel Research Institute Group
2022
Lubrication plays an important role in hot extrusion of Ni-based super-alloy tubes, the shape, stress as well temperature alloy billets and function glass pad are change constantly process. With deterioration lubrication conditions, tendency tubes to crack or fracture is greatly increased. The influence lubricant on tube procedure Inconel 625 was investigated by numerical simulation with ABAQUS software. results show that billet load increased rise coulomb friction factor. When factor over...
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A novel Ni-based superalloy with moderate volume fraction of γ' particles and low stacking fault energy is used as a model to investigate the dependence stress rupture properties on competing deformation modes at 760 ℃/480 MPa. The results show that life studied decreases increasing cold rolling reduction amount. On contrary, elongation after ruptured increases increase reduction. mechanisms can be divided into three stages amount: (ⅰ) dislocation slipping & isolated shearing, (ⅱ) shearing...
The variation of microstructure, which depends on the processing history, significantly affects mechanical property alloys. Here, thermo-mechanical treatments were employed to control microstructure and tune corresponding properties a Ni-based superalloy. nanotwins can be successfully introduced into superalloy after cold rolling reduction amount 70%. Meanwhile, are thermally stable during subsequent annealing at 950 °C two-step aging processes. high yield strength 1691 MPa has been obtained...
A novel Ni-based superalloy with moderate volume fraction of γ' particles and low stacking fault energy is used as a model to investigate the dependence stress rupture properties at 760 °C/480 MPa on competing deformation modes. The results show that degree recovery recrystallization increases increasing rolling reduction, causing more pronounced softening effect, which accounts for increase elongation after ruptured. mechanisms can be divided into three stages reduction: (i) dislocation...
The transition of deformation mechanisms and mechanical properties a novel Ni-based superalloy from 25 °C to 760 was investigated. Moreover, the yield strength at stress rupture life °C/480 MPa studied GH4742 alloy compared. elongation gradually reduce with increasing temperatures. Microstructure characterizations show that plastic is mainly dominated by dislocation slip some stacking faults shearing γ' particles 650 °C. At temperature 700 °C, microtwinning become prominent mechanisms....