Microstructure and mechanical properties of a novel refractory AlNbTiZr high-entropy alloy

被引：70
作者：
Chen, W. [1 ]
Tang, Q. H. [2 ]
Wang, H. [1 ]
Xie, Y. C. [1 ]
Yan, X. H. [3 ,4 ]
Dai, P. Q. [1 ,3 ,4 ]
机构：
[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou, Fujian, Peoples R China
[2] Putian Univ, Sch Mech & Elect Engn, Putian, Peoples R China
[3] Fujian Univ Technol, Coll Mat Sci & Engn, Fuzhou, Fujian, Peoples R China
[4] Fujian Prov Key Lab Adv Mat Proc & Applicat, Fuzhou, Fujian, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2018年 / 34卷 / 11期
关键词：
Refractory high-entropy alloy; B2; structure; strengthening; toughening; PRINCIPAL ELEMENT ALLOYS; TENSILE PROPERTIES; SOLID-SOLUTION; LOW-DENSITY; ALUMINUM; BEHAVIOR; PHASE; STABILITY; DESIGN;
D O I：
10.1080/02670836.2018.1446267
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and mechanical properties of a novel refractory AlNbTiZr high-entropy alloy (HEA) with a low density of similar to 5.85 g cm(-3) were investigated after arc melting and homogenisation at 1473 K for 5 h. The as-cast HEA exhibits a single-phase ordered body-centred cubic (B2) structure. A hexagonal Zr5Al3-type second phase is introduced into the HEA through homogenisation treatment, resulting in increase of the yield strength, ultimate compressive strength and fracture strain by 70 MPa, 308 MPa and 9.2%, respectively. These results indicate that the introduction of the hexagonal Zr5Al3-type second phase into the B2 matrix can simultaneously improve the HEA strength and ductility, showing a strength-ductility combination superior to those of most reported refractory HEAs.
引用
收藏
页码：1309 / 1315
页数：7
相关论文
共 35 条
  • [1] Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Al
    Chen, H.
    Kauffmann, A.
    Gorr, B.
    Schliephake, D.
    Seemueller, C.
    Wagner, J. N.
    Christ, H. -J.
    Heilmaier, M.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 661 : 206 - 215
  • [2] Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys
    Chuang, Ming-Hao
    Tsai, Ming-Hung
    Wang, Woei-Ren
    Lin, Su-Jien
    Yeh, Jien-Wei
    [J]. ACTA MATERIALIA, 2011, 59 (16) : 6308 - 6317
  • [3] A fracture-resistant high-entropy alloy for cryogenic applications
    Gludovatz, Bernd
    Hohenwarter, Anton
    Catoor, Dhiraj
    Chang, Edwin H.
    George, Easo P.
    Ritchie, Robert O.
    [J]. SCIENCE, 2014, 345 (6201) : 1153 - 1158
  • [4] Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys
    Gorr, B.
    Azim, M.
    Christ, H. -J.
    Mueller, T.
    Schliephake, D.
    Heilmaier, M.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 624 : 270 - 278
  • [5] Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase
    Guo, Sheng
    Liu, C. T.
    [J]. PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2011, 21 (06) : 433 - 446
  • [6] A precipitation-hardened high-entropy alloy with outstanding tensile properties
    He, J. Y.
    Wang, H.
    Huang, H. L.
    Xu, X. D.
    Chen, M. W.
    Wu, Y.
    Liu, X. J.
    Nieh, T. G.
    An, K.
    Lu, Z. P.
    [J]. ACTA MATERIALIA, 2016, 102 : 187 - 196
  • [7] Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system
    He, J. Y.
    Liu, W. H.
    Wang, H.
    Wu, Y.
    Liu, X. J.
    Nieh, T. G.
    Lu, Z. P.
    [J]. ACTA MATERIALIA, 2014, 62 : 105 - 113
  • [8] Enhanced mechanical properties of HfMoTaTiZr and HfMoNbTaTiZr refractory high-entropy alloys
    Juan, Chien-Chang
    Tsai, Ming-Hung
    Tsai, Che-Wei
    Lin, Chun-Ming
    Wang, Woei-Ren
    Yang, Chih-Chao
    Chen, Swe-Kai
    Lin, Su-Jien
    Yeh, Jien-Wei
    [J]. INTERMETALLICS, 2015, 62 : 76 - 83
  • [9] Deformation, failure and removal mechanisms of thin film structures in abrasive machining
    Kang, Cheng-Wei
    Huang, Han
    [J]. ADVANCES IN MANUFACTURING, 2017, 5 (01) : 1 - 19
  • [10] Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity
    Lilensten, Lola
    Couzinie, Jean-Phillipe
    Bourgon, Julie
    Perriere, Loic
    Dirras, Guy
    Prima, Frederic
    Guillot, Ivan
    [J]. MATERIALS RESEARCH LETTERS, 2017, 5 (02): : 110 - 116
1234