Achieving excellent strength-ductility synergy via cold rolling-annealing in Al-containing refractory high-entropy alloys
Y Ma, L Sun, Y Zhang, Z Zhang - … Journal of Refractory Metals and Hard …, 2023 - Elsevier
Most refractory high-entropy alloys (RHEAs) with Al possess excellent strength but low
elongation. Low ductility is generally induced by the formation of brittle phases after long-
term heat treatment. Here, we demonstrate a new strategy to optimize strength-ductility in
RHEAs through cold rolling-annealing treatments. The Zr 35 Ti 30 Nb 20 Al 10 Ta 5 RHEA
was cold rolled followed by annealing. A high tensile yield strength of∼ 997 MPa with an
elongation of∼ 20% was obtained. Several factors together optimize the mechanical …
elongation. Low ductility is generally induced by the formation of brittle phases after long-
term heat treatment. Here, we demonstrate a new strategy to optimize strength-ductility in
RHEAs through cold rolling-annealing treatments. The Zr 35 Ti 30 Nb 20 Al 10 Ta 5 RHEA
was cold rolled followed by annealing. A high tensile yield strength of∼ 997 MPa with an
elongation of∼ 20% was obtained. Several factors together optimize the mechanical …
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