Al Method for enhancing workability of Al-containing high-entropy alloys

摘要

The present invention relates to a method for enhancing workability of Al-adding high entropy alloy, which is for solving problems that are limited in size and industrial application as the workability due to brittleness of the Al-adding high entropy alloy forming a BCC phase at low temperature deteriorates. The method according to the present invention comprises: a step of heating the high entropy alloy to a temperature higher than a temperature at which a phase fraction of the BCC phase is 6% or less and maintaining the temperature until the phase fraction of the BCC phase is reached prior to processing of the entropy alloy in which the BCC phase is formed through addition of Al in the FCC single phase; and a step of cooling the heated entropy alloy to maintain the BCC phase fraction of the heated entropy alloy. According to the method, a weak workability of the Al-adding high entropy alloy, which is effective in ensuring price competitiveness and light weight, is solved such that the Al-adding high entropy alloy can be enlarged and be processed into a desired shape, thereby being applicable to an industry of the Al-adding high entropy alloy.