A5051696984- Titanium Alloys Microstructure and Properties
- Intermetallics and Advanced Alloy Properties
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- Additive Manufacturing and 3D Printing Technologies
- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Aluminum Alloy Microstructure Properties
- Metal Forming Simulation Techniques
- Aluminum Alloys Composites Properties
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
- Laser and Thermal Forming Techniques
- X-ray Diffraction in Crystallography
- Advanced Surface Polishing Techniques
- MXene and MAX Phase Materials
- Magnesium Alloys: Properties and Applications
- Cellular and Composite Structures
- High-Velocity Impact and Material Behavior
- Machine Learning in Materials Science
- Surface Roughness and Optical Measurements
- Nuclear Materials and Properties
- Metallurgy and Material Science
- Metal Alloys Wear and Properties
UCLouvain
2013-2024
Institut de Recherche de Chimie Paris
2016
Chimie ParisTech
2016
Institute of Mechanics
2015
Abstract Extensive use of titanium alloys is partly hindered by a lack ductility, strain hardening, and fracture toughness. Recently, several β -metastable were designed to simultaneously activate both transformation-induced plasticity twinning-induced effects, resulting in significant improvements their hardening capacity resistance plastic localization. Here, we report an ultra-large Ti-12Mo alloy (wt.%), that results from high damage nucleation, with unexpected phenomenology under...
This study proposes a machine-learning model combining ab initio calculations and an experimental dataset of 201 alloys (in addition to pure Ti) predict the activated plasticity mechanisms in β-Ti alloys. methodology is shown be more efficient than so-called Bo¯-Md¯ approach, achieving 82% prediction accuracy while Bo-Md approach leads 52% correct predictions on same dataset. In addition, four new alloy compositions were produced verify validity. Specific cases where present disagreed with...
The main drawback of laser powder bed fusion (L-PBF), commonly called selective melting (SLM) is the high porosity which may lead to an early failure parts. To minimize it, L-PBF parameters need be optimized focusing on power, scanning speed and hatching space. However, no standard guideline exists. In this study, efficient cost-effective methodology developed validated AlSi12. This innovative brings together single scan tracks (SST), macroscopic properties analysis design experiments (DOE)....
A new family of metastable beta type titanium alloys has recently been designed for ductility improvement with large strain-hardening effect. Superior plastic properties were obtained due to collective effects both phase transformation induced plasticity and twinning plasticity. series stress transformations, including stress/strain-induced omega stress-induced martensitic α" play particular roles at each deformation stage. The SIM transformations found be closely related the behavior...
Titanium alloys typically exhibit a limited ductility (typically 20%) and little strain-hardening. An alloy design with new concept was conducted aiming at improving both strain hardening while keeping the mechanical resistance an excellent level. experimental validation illustrated Ti-12(wt.%)Mo alloy, exhibiting true stress - values necking, of about 1000MPa 0.38, respectively, large rate close to theoretical limit. In order clarify origin this outstanding combination properties, detailed...
A crystal plasticity based finite element model incorporating deformation twinning is applied in 3D to simulate the stress field around a twin lamella metastable β titanium alloy. Compared with conventional 2D simulations, determined by simulation shows better agreement that measured experimentally using high resolution electron backscattered diffraction. Reasons leading different results and simulations are discussed. It also discussed which circumstances sufficient, necessary.
β metastable Ti-Mo alloys have recently attracted attention due to their excellent mechanical properties, in terms of work-hardening rate, ductility and fracture toughness. In this work, a Lüders-like banding effect is highlighted Ti-10/12/15 (wt %) Mo alloys, starting at the onset plasticity. While sharing some similarities with classical Lüders such as nucleation propagation deformation band through gauge length, it also shows major differences. Interestingly, initial stress drop quasi...