Development of ultra-hard multi-component alloys

Engenharia: a máquina que constrói o futuro

“…The software was subjected to a running test in order to validate the calculation process of alloy 6, denomination given in the work of (Restivo & Restivo, 2021). The parameters calculated by the software presented a relatively good agreement with the values provided in the cited reference (approximately 2% of relative error).…”

“…Therefore, for example, within a 2% error margin, this set of results can be used to validate the software related to the precision mentioned for the application of alloy 6. Moreover, despite the relative error obtained, none of the statuses found via the computer program was different from the obtained in (Restivo & Restivo, 2021). Therefore, the computer program presented may be used as a helping tool to partially predict the behavior of the intended alloy and potentially be tested in the design of similar UHMAs.…”

“…( 1)), which, in turn, is known to reduce the notch toughness where fatigue phenomenon prevails (Ryu & Yu, 1998). The higher the chromium equivalent coefficient, the more it approaches to a body-centered cubic (BCC) structure, thus increasing the hardness (Restivo & Restivo, 2021), where each chemical symbol represents the respective weight percentage in the solid solution.…”

“…Although HEAs minimized the formation of intermetallic components, there is still the opportunity for improvement in what refers to hardness (wear resistance). In this context, the recent finding of diamoy alloys can be one of the breakthroughs of this paradigm (Restivo & Restivo, 2021). These alloys, yet under development, have six to nine different metallic elements at the cubic lattice positions.…”

“…2021 by the relative error statistical tool. The first column is the parameter nomenclature, the second and third columns are, respectively, the values ofRestivo & Restivo, 2021, and the calculated by the software. Finally, the last column corresponds to the relative error between the two sources.…”