Abstract

A plausible mechanism of stabilization or destabilization of the solid solutions (alloys) based on transition metal (TM) carbides, borides and MAX phases is suggested using the results of first-principles calculations of the Ti 1-x Hf x C, Ti 1-x Ta x C, Ti 1-x Zr x C, Ba 1-x La x B 6 , and Ti 2 Al 1-x Si x C alloys. It was established that the alloying of the end members with different valence electron concentrations (VEC) leads to a change of the occupancy of the metal band. As a result, the mixing energy of the solid solutions is negative, i.e. the alloys are stable relatively the end members. On the contrary, the solid solutions are unstable relatively the end members with the same VECs. The stable alloys exhibit a positive deviation of the Vickers hardness from linearity.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.