ProgramMaster Logo
Conference Tools for MS&T22: Materials Science & Technology
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T22: Materials Science & Technology
Symposium Alloy Phase Transformations at Elevated Temperatures
Presentation Title Alternate Phase Transformation Paths in a Nb-50Ti Alloy in the Presence of Oxygen Interstitials
Author(s) Ravit Silverstein, Anirudh R. Natarajan, Anton Van der Ven, Carlos G. Levi
On-Site Speaker (Planned) Ravit Silverstein
Abstract Scope Interstitials are well known to affect the phase stability and impact the performance of many structural alloys, including those based on BCC multi-principal elements (MPEs). As a part of a broader effort to understand the impact of interstitials in BCC refractory alloys, a study has been undertaken to address the role of relatively dilute concentrations of oxygen in a BCC equimolar Ti-Nb alloy. The study revealed that oxygen incorporation induces a miscibility gap within the BCC field, with potential for spinodal decomposition about the equimolar solution. The spinodal leads to modulation of Nb/Ti, with O redistributing preferentially to the Ti-rich regions. The latter then exhibits a primary transformation mechanism to HCP via a transient orthorhombic form, following the Burgers path. A secondary path through an intermediate omega phase is also observed. This presentation discusses the alternate paths and their current understanding.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing Design of Metal Matrix Composites of Stainless Steel 316 and Inconel 718
Alternate Phase Transformation Paths in a Nb-50Ti Alloy in the Presence of Oxygen Interstitials
Develop Precipitation-Strengthened Refractory High Entropy Alloys for Turbine Blades Applications above 1300 Degree Celsius
E-1: Multiscale Modeling of Solidification Processes for Metal & Alloys
Effect of Grain Boundary Phases on Creep Properties of a Novel Ni-Co Based Superalloy
Examining the Influence of Nitride Precipitation on the Performance of Additively Manufactured Nickel Superalloys
Hyper Duplex Stainless Steel: A Study on the Sigma Phase Formation
Impact of Manufacturing Processes on Phase Transformations in High-temperature Alloys: Some Thoughts Based on Representative Case Studies
In-situ Neutron Characterization of Thermomagnetic Processes Utilizing Direct Induction Heating
Metallic Alloy Microstructure Prediction and Control with Processing
Microstructure and Mechanical Properties of W-free γ + γ' Co-based Superalloys with Ni, Cr, and Fe Additions
Microstructure Evolution and Mechanical Properties of α′/α″-Strengthened Ferritic Superalloys
On the Shapes of Time-Temperature-Transformation Curves across Alloys and Reactions
Phase Stability in Cast and Additively Manufactured Al-9 wt%Cu-6 wt%Ce Alloy
Precipitation Strengthening in BCC Al2.7CrMnTiV High-Entropy Alloys
Precursor Metastable Phases and Their Influence on α Precipitation in the Metastable β-titanium Alloy, Ti-5Al-5Mo-5V-3Cr
Single-step Aging Treatment on Cast Haynes 282 Ni-based Alloy – Microstructure and Mechanical Behavior
Solidification Modelling With CALPHAD: Process Applications of Equilibrium and Non-equilibrium Models and When to Use Them
Study of Thermal Decomposition of γ’-Fe4N Using Molecular Dynamics Simulation
The Optimization of Local Phase Transformation Strengthening in Next Generation Superalloys
Thermal Stability and Time-temperature-transformation Diagrams of Co-rich Nanocomposite Ribbons
Tracking Changes in Microstructure and Mechanical Properties of Electron Powder Bed Fusion Produced Inconel-738

Questions about ProgramMaster? Contact programming@programmaster.org