A5089875845- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Shape Memory Alloy Transformations
- Welding Techniques and Residual Stresses
- Additive Manufacturing and 3D Printing Technologies
- Titanium Alloys Microstructure and Properties
- Creativity in Education and Neuroscience
- High-Temperature Coating Behaviors
- Elasticity and Wave Propagation
- Manufacturing Process and Optimization
- Laser-induced spectroscopy and plasma
- Aeroelasticity and Vibration Control
Delft University of Technology
2023-2024
Dalian University of Technology
2018-2023
In energy absorption applications, architectured metallic materials generally suffer from unrecoverable deformation as a result of local yield damage or inelastic buckling.Nitinol (NiTi) offers recoverable and dissipation due to its unique superelasticity, which can change the way we design additively manufacture energy-absorbing materials.The interplay between microstructure, mesoscopic deformation, macroscopic thermomechanical response NiTi is still not studied in depth.In this work,...
Additive manufacturing of NiTi shape memory alloys has attracted attention in recent years, due to design flexibility and feasibility achieve four-dimensional (4D) function response. To obtain customized 4D functional responses structures, tailorable phase transformation temperatures stress windows as well one-way or two-way properties are required. this goal, various heat treatments, including direct aging, annealing followed by were optimized for the Ti-rich (Ni49.6Ti (at.%)) fabricated...
Additively manufactured Nitinol (NiTi) architectured materials, designed with unit cell architectures, hold promise for customisable applications. However, the common assumption of homogeneity in modeling and additive manufacturing these materials needs further investigation because geometric-dependent melt pool behaviour results inhomogeneous microstructure thermomechanical properties. This study shows that property inhomogeneity at mesoscale is one reason pseudo-linear response partial...
Abstract：Due to complex influence mechanisms and process features, low quality reliability, processing repeatability adaptive control ability are important problems in laser-based direct energy deposition.Dynamic characteristics of molten pools monitored by coaxial visual monitoring present the mechanism dynamic on evolution behaviour geometrical accuracy deposition.Four typical processes main objects investigated.In single-track single-layer cladding, contour profiles special grayscale...
<title>Abstract</title> At present, in the directed energy deposition (DED) of metals, heat transfer melt pool and microstructural evolution are not fully understood. This study investigates thermal effect on microstructure mechanical properties DED AISI 316L, using in-situ optical monitoring. Five thin-wall samples were tested to determine with variable laser powers scanning speeds. A comprehensive monitoring system a CMOS (coaxial complementary metal oxide semiconductor) visual module an...