ProgramMaster Logo
Conference Tools for 2022 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Microstructural Templates Consisting of Isostructural Ordered Precipitate / Disordered Matrix Combinations: Microstructural Evolution and Properties
Presentation Title Deformable Intermetallic Nanorods Leads to an Excellent Strength-ductility Combination in a High Entropy Alloy
Author(s) Bharat Gwalani, Sriswaroop Dasari, Vishal Soni, Shivakant Shukla, Abhinav Jagetia, Priyanshi Agrawal, Rajiv S. Mishra, Rajarshi Banerjee
On-Site Speaker (Planned) Bharat Gwalani
Abstract Scope Thermodynamic modeling has been employed to design this HEA with large L12 volume fraction. Thermo-mechanical processing by isothermal annealing of the conventionally processed bulk cold-rolled alloy directly at precipitation temperatures, has been applied to produce a high density of uniformly distributed L12 nanorods within refined FCC grains, resulting from concomitant recrystallization and discontinuous precipitation processes. The nanorod morphology of the discontinuous L12 product has been established from three-dimensional atom probe tomography. The refined grains result in a complete coverage of the microstructure with discontinuously precipitated intermetallic nanorods. This nanorod strengthened HEA exhibits an exceptionally high room temperature yield strength of ~1630 MPa, good tensile ductility of ~15%, and an ultimate tensile strength of ~1720 MPa. These results open a new strategy for design of fine-grained microstructures strengthened via ordered intermetallic phases, exploiting the beneficial effects of discontinuous precipitation, for achieving very high room temperature tensile strengths while maintaining good ductility.
Proceedings Inclusion? Planned:


Bcc-Superalloys Microstructure Templates: Tungsten to Titanium to Iron
Comparison of γ' and B2 Precipitates and Their Influence on the Mechanical Behavior of FeNiCoAl-based High-entropy Alloys
Core/Triple Shell Precipitates in Al-Er-Sc-Zr-(V,Nb,Ta) Alloys
Deformable Intermetallic Nanorods Leads to an Excellent Strength-ductility Combination in a High Entropy Alloy
Design of Precipitation Strengthened Metastable High Entropy Alloys
Free Energy Landscape, Transformation Pathway and Alloy Parameters Leading to Various Isostructural Ordered Precipitate Microstructures
High Temperature Deformation Pathways in Ordered L12- and Immm-based Compounds
Investigation of Nucleation Mechanisms Associated with the Formation of Coprecipitates in Ni-based Superalloys
Microstructural Engineering in NiCoCr Medium Entropy Alloys
Novel Nickel-based Alloys for High Temperature Structural Applications
On the Detailed Morphological and Chemical Evolution of Phases during Laser Powder Bed Fusion and Common Post-processing Heat Treatments of IN718
Optimizing Composition and Microstructure in Compositionally Complex Alloys Possessing bcc and B2 Mixtures
Precipitate Strengthening and Stabilization Mechanisms in Cast and Additively Manufactured Al-Cu-Mn-Zr Alloys
Precipitation of Ordered B2 Precipitates in BCC Al2.7CrMnTiV High-entropy Alloys
Seeing the Shearing of Short-range Order with Dislocations in the High-entropy Alloy
The Microstructural Design and Thermomechanical Processing of Compositionally Complex Alloys
The Origin and Stability of Nanostructural Hierarchy in Nickel-base Superalloys
The Role of Precipitate Size Distribution and Morphology on Ni Superalloy Deformation Micromechanisms
Tuning the Degree of Chemical Ordering in the Solid Solution of a Complex Concentrated Alloy and Its Impact on Mechanical Properties
Understanding the Role of Chemistry on Planar Fault Energies in A3B Compositions

Questions about ProgramMaster? Contact