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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Microstructural Template Consisting of a Face-Centered Cubic Matrix with Ordered Precipitates: Microstructural Evolution and Properties
Presentation Title Novel Microstructural Template Based on Ordered Intermetallic Precipitation in FCC Based Complex Concentrated Alloys
Author(s) Sriswaroop Dasari, Vishal Soni, Abhinav Jagetia, Rajarshi Banerjee
On-Site Speaker (Planned) Sriswaroop Dasari
Abstract Scope The microstructural template consisting of a coherent mixture of FCC and L12 phases was widely explored and the mechanical behavior is well established in Ni-base and Co-base superalloys. A specific advantage with mimicking the same microstructure in Complex Concentrated Alloys (CCA’s) is that the FCC solid solution matrix remains concentrated even after precipitating out the ordered phases. In addition to a potentially enhanced solid-solution strengthening effect, novel microstructures can be engineered in these alloys by controlling the competition between L12 and B2/L21 phases. FCC based CCA’s have been designed using CALPHAD approach, fabricated by conventional arc melting and thermo-mechanically processed to produce microstructures with different volume fractions of L12 and B2/L21 phases. Detailed microstructural and mechanical characterization was performed using using transmission electron microscopy (TEM), atom probe tomography (APT) and room temperature tensile testing.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


A Nickel-based Superalloy Dual-reinforced by L12 Ni3Al and D022 Ni3V Ordered-fcc Precipitates
Alloying for Corrosion Resistance: the Effect of Manganese and Silicon on a Polycrystalline Nickel-based Superalloy
Coarsening and Creep Behavior of Co-Ni-Al-W-Ti-Ta-B Superalloy with High γ′ Solvus Temperature
Coarsening Kinetics and Mechanical Properties of fcc Compositionally Complex Alloys Strengthened by L12 Precipitates
Correlative High-resolution Characterization of the Early Stages of Precipitation During Direct Aging of Alloy 718
D022 + D022’ Dual-phase Microstructure in As-cast Al-Mo-Ti Alloys
Elevated Temperature Microstructure Evolution and Properties of an Equiatomic CrCoNi Superalloy Containing Al,Ti
FCC High-entropy Alloys Strengthened with L12 Precipitates: Alloying Strategies and Highlights
High Temperature Microstructural Stability Mechanisms Revealed by Microscopy in Al-Cu-Mn-Zr Alloys
Impact of L12-phase Dispersoids on the Hardening Behavior of Multi-phase Strengthened Aluminum Alloys
In-situ Transmission Electron Microscopy Investigation of Continuous Precipitation of Ni3Mo in a Ni-25Mo-8Cr Alloy Formed by Direct Current Magnetron Sputtering
Mapping the Mechanical Property Space of Al-Cu-Mn-Zr (ACMZ) Cast Aluminum Alloys with Superior Microstructural Stability
Nanoscale Precipitation-strengthened Al-Er-Sc-Zr-(V,Nb,Ta) Alloys
Novel fcc-Cu Matrix Based High Temperature Alloys Strengthened by Ordered Precipitates
Novel Microstructural Template Based on Ordered Intermetallic Precipitation in FCC Based Complex Concentrated Alloys
Ordered Precipitates and Mechanical Properties of Nickel-base Superalloys Studied by Analytical Scanning and Transmission Electron Microscopy
Precipitation and Deformation Mechanisms of γ’/γ” Co-precipitates in Alloy 718
Sc-free Nanoprecipitate-strengthened Aluminum Alloys with Exceptional Creep Resistance
Stress Induced Sensitization in HAZ of 304 LN Austenitic Stainless Steel
The Quantitative Model for Heat Treatment Parameters and Gamma Prime Variations on Nickel-base Superalloys

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