A5039090559- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Additive Manufacturing Materials and Processes
- Titanium Alloys Microstructure and Properties
- Metal and Thin Film Mechanics
- Welding Techniques and Residual Stresses
- Advanced Welding Techniques Analysis
- Additive Manufacturing and 3D Printing Technologies
- Intermetallics and Advanced Alloy Properties
- Semiconductor materials and interfaces
- Electronic Packaging and Soldering Technologies
- Laser and Thermal Forming Techniques
- Copper Interconnects and Reliability
- Nuclear Materials and Properties
Chinese Academy of Sciences
2005-2023
University of Science and Technology of China
2020-2023
Harbin Welding Institute
2020-2022
Abstract A 10 mm narrow gap TC4 titanium alloy welded joint by laser welding with filler wire was obtained different heat inputs. The microstructures of the were analyzed OM, SEM, XRD and EBSD. mechanical properties microhardness test tensile test. results show that increase input, average grain size width equiaxed crystal zone in center weld increases, angle columnar gradually tends to be perpendicular weld, affected (HAZ) increases without obvious coarsening. HAZ is softened, its value...
The effect of cooling rate on phase transformation, microstructures, and mechanical properties TC4 titanium alloy deposited metal by laser surfacing welding with filler wire was investigated in situ observation a high-temperature confocal microscope, XRD, SEM, through microhardness test. results showed that primary α began to appear at grain boundaries when the heated 890.5°C, microstructures were all composed coarse β columnar grains after temperature raised 1 190.2°C; increase during...
Abstract In order to investigate the effect of welding sequence on stress distribution and deformation Mg alloy fillet welds, DE-GMAW modified Gaussian heat source model established by MSC. Marc software was applied numerical simulation analysis temperature field proved measurement residual blind hole method. The results indicated that were lowest according welds from head cylinder end one side first then in opposite other side. trend consistent with 10% error, which provided theoretical...
Electron beam (EB) welding of Ti-24Al-17Nb-0.5Mo (at.%) alloy and the effects postweld heat treatments (PWHT) were studied. Through optimizing parameters, defect-free joint was obtained. For as-welded joint, fusion zone (FZ) consisted predominant β occasional α2 within grains. Microhardness FZ higher than that base metal (BM) affected (HAZ) between BM FZ. PWHTs greatly modified microstructures mechanical properties weld zone. at both 820oC 900oC yielded fine acicular laths in leading to...