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Meeting Materials Science & Technology 2019
Symposium Mechanochemical Synthesis and Reactions in Materials Science IV
Presentation Title Effect on Phase Evolution and Thermal Stability of Mechanically Alloyed AlCoCrFeNi High-entropy Alloy on Addition of Mn and Ti
Author(s) Nilay Krishna Mukhopadhyay, Vikas Shivam, Joysurya Basu
On-Site Speaker (Planned) Nilay Krishna Mukhopadhyay
Abstract Scope High entropy alloys (HEAs) are a new class of materials gaining significant attention due to their promising properties with a wide range of potential applications. Here, we have studied the phase evolution and thermal stability of the widely reported AlCoCrFeNi HEA on the addition of Mn and Ti. In this context, first the AlCoCrFeNi HEA has been synthesized by mechanical alloying with single phase BCC (a=2.89, approx.) structure. No change in structure was observed due to addition of Mn and Ti in AlCoCrFeNi HEA separately. Thermal stability of both the alloys has been investigated through dynamic DSC, in-situ XRD and suitable thermal treatments. Consolidated samples showed the partial transformation of the disordered solid solution phase in to the ordered phases. Attempts have been made to understand the thermo-physical properties of the alloys and correlate with the thermodynamic criteria for solid solution phase formation in multicomponent alloys.
Proceedings Inclusion? Planned: Other (journal publication, etc.; describe below)


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