Hardening of an Al0.3CoCrFeNi high entropy alloy via high-pressure torsion and thermal annealing - Details

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Abstract：

High-pressure　torsion　(HPT)　and　thermal　annealing　were　applied　to　a　face-centered　cubic　as-cast　Al0.3CoCrFeNi　high　entropy　alloy.　Processing　by　HPT　produced　a　nanostructure　with　a　higher　incremental　hardness　than　in　most　HPT　single-phase　materials　and　subsequent　annealing　at　appropriate　temperatures　gave　an　ordered　body-centered　cubic　secondary　phase　with　an　additional　increase　in　hardness.　The　highest　hardness　after　HPT　and　annealing　was　approximately　four　times　higher　than　for　the　as-cast　alloy.　(C)　2015　Elsevier　B.V.　All　rights　reserved.

Keyword：

Annealing Crystal structure Hardening High entropy alloy High-pressure torsion Nanocrystalline materials

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[ 1 ] [Tang, Q. H.]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 2 ] [Dai, P. Q.]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 3 ] [Huang, Y.]Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England
[ 4 ] [Langdon, T. G.]Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England
[ 5 ] [Huang, Y. Y.]Fujian Univ Technol, Sch Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 6 ] [Dai, P. Q.]Fujian Univ Technol, Sch Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 7 ] [Liao, X. Z.]Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
[ 8 ] [Langdon, T. G.]Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[ 9 ] [Langdon, T. G.]Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA