|About this Abstract
|2020 TMS Annual Meeting & Exhibition
|Microstructural Template Consisting of a Face-Centered Cubic Matrix with Ordered Precipitates: Microstructural Evolution and Properties
|Novel Microstructural Template Based on Ordered Intermetallic Precipitation in FCC Based Complex Concentrated Alloys
|Sriswaroop Dasari, Vishal Soni, Abhinav Jagetia, Rajarshi Banerjee
|On-Site Speaker (Planned)
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.
|Planned: Supplemental Proceedings volume