Microstructure and mechanical properties of the TiZrNbMoTa refractory high-entropy alloy produced by mechanical alloying and spark plasma sintering - Details

author：

Zhu, Chenglong (Zhu, Chenglong.) ^[1] | Li, Zhanjiang (Li, Zhanjiang.) ^[2] | Hong, Chunfu (Hong, Chunfu.) ^[3] | Dai, Pinqiang (Dai, Pinqiang.) ^[4] | Chen, Junfeng (Chen, Junfeng.) ^[5] (Scholars：陈俊锋)

Indexed by：

EI Scopus SCIE

Abstract：

The　equiatomic　refractory　high　entropy　alloy　(HEA)　TiZrNbMoTa　was　investigated.　The　alloyed　powders　with　face-centered　cubic　(FCC)　structured　solid　solution　phase　were　prepared　by　mechanical　alloying　(MA)　and　then　sintered　by　spark　plasma　sintering　(SPS)　at　1300,　1400,　1500,　and　1600　degrees　C.　The　microstructure　and　mechanical　properties　of　the　bulk　alloy　were　investigated.　The　body-centered　cubic　(BCC)　structured　solid　solution　phase　and　the　ZrO2　phase　precipitated　from　the　FCC　structured　solid　solution　phase　during　cool-down　from　sintering.　The　highest　compression　fracture　strength　(3759　MPa)　and　fracture　strain　(12.1%)　were　obtained　in　the　refractory　HEA　sintered　at　1400　degrees　C.　The　grain　boundary　strengthening,　precipitation　strengthening,　solid　solution　strengthening,　transformation-induced　plastic　(TRIP)　effect,　and　toughening　effect　of　the　ZrO2　phase　are　the　important　factors　for　the　high　strength　and　ducitily　of　the　refractory　HEA　prepared　in　this　study.

Keyword：

Mechanical properties Microstructure Powder metallurgy Refractory high-entropy alloy

Community：

[ 1 ] [Zhu, Chenglong]Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China
[ 2 ] [Dai, Pinqiang]Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China
[ 3 ] [Chen, Junfeng]Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China
[ 4 ] [Li, Zhanjiang]Fujian Univ Technol, Coll Mat Sci & Engn, Fuzhou 350118, Peoples R China
[ 5 ] [Hong, Chunfu]Fujian Univ Technol, Coll Mat Sci & Engn, Fuzhou 350118, Peoples R China
[ 6 ] [Dai, Pinqiang]Fujian Univ Technol, Coll Mat Sci & Engn, Fuzhou 350118, Peoples R China
[ 7 ] [Li, Zhanjiang]Fujian Prov Key Lab New Mat Preparat & Forming Te, Fuzhou 350108, Peoples R China
[ 8 ] [Hong, Chunfu]Fujian Prov Key Lab New Mat Preparat & Forming Te, Fuzhou 350108, Peoples R China
[ 9 ] [Dai, Pinqiang]Fujian Prov Key Lab New Mat Preparat & Forming Te, Fuzhou 350108, Peoples R China

Reprint 's Address：

戴品强陈俊锋
[Dai, Pinqiang]Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China;;[Chen, Junfeng]Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China

Email：

pqdai@126.com |
chenjunfeng@fzu.edu.cn

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