Strength-ductility synergy of additively manufactured (CoCrNi)87Al13 medium entropy alloy with heterogeneous multiphase microstructure

被引：20
作者：
Zheng, Mengyao [1 ]
Li, Chuanwei [1 ]
Ye, Zhenhua [1 ]
Zhang, Xinyu [1 ]
Yang, Xudong [1 ]
Wang, Qing [3 ]
Gu, Jianfeng [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Inst Mat Modificat & Modelling, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
[3] Shanghai Univ, Inst Mat, Lab Microstruct, Shanghai 200444, Peoples R China
来源：
SCRIPTA MATERIALIA | 2023年 / 222卷
基金：
中国国家自然科学基金;
关键词：
Additive manufacturing; Medium -entropy alloy; Heterogeneous multiphase microstructure; Mechanical properties; Fracture mechanisms; CORROSION PROPERTIES; MECHANICAL-PROPERTIES; PHASE; EVOLUTION; STEEL; FCC;
D O I：
10.1016/j.scriptamat.2022.115016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, a (CoCrNi)87Al13 medium-entropy alloy was fabricated by using laser-based directed energy deposition (L-DED). The yield strength and ultimate tensile strength of the (CoCrNi)87Al13 alloy were improved by 67% and 59%, respectively, compared with those of a L-DEDed CoCrNi alloy, and the ultimate elongation remained at 24%. A heterogeneous multiphase microstructure with multiscale ordered/disordered body-centered cubic phases was obtained by adding Al during the rapid solidification and thermal cycle history of the L-DED. The heterogeneous multiphase microstructure was closely correlated with the mechanical performance improvement, deformation, and fracture mechanisms of the alloys.
引用
收藏
页数：7
相关论文
共 48 条
  • [1] A combinatorial assessment of AlxCrCuFeNi2(0 < x < 1.5) complex concentrated alloys: Microstructure, microhardness, and magnetic properties
    Borkar, T.
    Gwalani, B.
    Choudhuri, D.
    Mikler, C. V.
    Yannetta, C. J.
    Chen, X.
    Ramanujan, R. V.
    Styles, M. J.
    Gibson, M. A.
    Banerjee, R.
    [J]. ACTA MATERIALIA, 2016, 116 : 63 - 76
  • [2] The use of high-entropy alloys in additive manufacturing
    Brif, Yevgeni
    Thomas, Meurig
    Todd, Iain
    [J]. SCRIPTA MATERIALIA, 2015, 99 : 93 - 96
  • [3] Hot cracking mechanism affecting a non-weldable Ni-based superalloy produced by selective electron Beam Melting
    Chauvet, Edouard
    Kontis, Paraskevas
    Jaegle, Eric A.
    Gault, Baptiste
    Raabe, Dierk
    Tassin, Catherine
    Blandin, Jean-Jacques
    Dendievel, Remy
    Vayre, Benjamin
    Abed, Stephane
    Martin, Guilhem
    [J]. ACTA MATERIALIA, 2018, 142 : 82 - 94
  • [4] Change in the primary solidification phase from fcc to bcc-based B2 in high entropy or complex concentrated alloys
    Choudhuri, D.
    Gwalani, B.
    Gorsse, S.
    Mikler, C. V.
    Ramanujan, R. V.
    Gibson, M. A.
    Banerjee, R.
    [J]. SCRIPTA MATERIALIA, 2017, 127 : 186 - 190
  • [5] Scientific, technological and economic issues in metal printing and their solutions
    DebRoy, T.
    Mukherjee, T.
    Milewski, J. O.
    Elmer, J. W.
    Ribic, B.
    Blecher, J. J.
    Zhang, W.
    [J]. NATURE MATERIALS, 2019, 18 (10) : 1026 - 1032
  • [6] Additive manufacturing of metallic components - Process, structure and properties
    DebRoy, T.
    Wei, H. L.
    Zuback, J. S.
    Mukherjee, T.
    Elmer, J. W.
    Milewski, J. O.
    Beese, A. M.
    Wilson-Heid, A.
    De, A.
    Zhang, W.
    [J]. PROGRESS IN MATERIALS SCIENCE, 2018, 92 : 112 - 224
  • [7] Microstructural origins of high strength and high ductility in an AlCoCrFeNi2.1 eutectic high-entropy alloy
    Gao, Xuzhou
    Lu, Yiping
    Zhang, Bo
    Liang, Ningning
    Wu, Guanzhong
    Sha, Gang
    Liu, Jizi
    Zhao, Yonghao
    [J]. ACTA MATERIALIA, 2017, 141 : 59 - 66
  • [8] Composition inhomogeneity reduces cracking susceptibility in additively manufactured AlCoCrFeNi2.1 eutectic high-entropy alloy produced by laser powder bed fusion
    Geng, Zhaowen
    Chen, Chao
    Li, Ruidi
    Luo, Jinru
    Zhou, Kechao
    [J]. ADDITIVE MANUFACTURING, 2022, 56
  • [9] High entropy alloys: A focused review of mechanical properties and deformation mechanisms
    George, E. P.
    Curtin, W. A.
    Tasan, C. C.
    [J]. ACTA MATERIALIA, 2020, 188 : 435 - 474
  • [10] High-entropy alloys
    George, Easo P.
    Raabe, Dierk
    Ritchie, Robert O.
    [J]. NATURE REVIEWS MATERIALS, 2019, 4 (08) : 515 - 534
12345