Suppression of σ-phase in nanocrystalline CoCrFeMnNiV high entropy alloy by unsolicited contamination during mechanical alloying and spark plasma sintering

被引：9
|
作者：
Vaidya, M. [1 ,2 ]
Karati, Anirudha [3 ]
Guruvidyathri, K. [1 ,4 ]
Nagini, M. [1 ]
Pradeep, K. G. [1 ,5 ]
Murty, B. S. [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Met & Mat Engn, Chennai 600036, Tamil Nadu, India
[2] Indian Inst Technol Hyderabad, Dept Mat Sci & Met Engn, Sangareddy 502285, Telangana, India
[3] Indian Inst Technol Madras, Dept Chem, Chennai 600036, Tamil Nadu, India
[4] Univ Hyderabad, Sch Engn Sci & Technol, Hyderabad 500046, India
[5] Rhein Westfal TH Aachen, Mat Chem, Kopernikusstr 10, D-52074 Aachen, Germany
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 255卷
关键词：
High-entropy alloy; Nanocrystalline materials; Spark plasma sintering; Atom probe tomography; Calphad; THERMAL-STABILITY; GRAIN-GROWTH; COCRFENI; EVOLUTION; MICROSTRUCTURE; PRECIPITATION; KINETICS;
D O I：
10.1016/j.matchemphys.2020.123558
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CoCrFeMnNiV high entropy alloy (HEA) exhibits a high content of sigma-phase (70 vol%) when produced by casting route. In the present work, a combination of mechanical alloying (MA) and spark plasma sintering (SPS) has been used to synthesize nanocrystalline CoCrFeMnNiV HEA where the formation of sigma-phase has been avoided. Electron microscopy and atom probe tomography analysis indicated the formation of FCC structured HEA matrix along with (Cr,V) carbide (15 vol%) precipitation, without the presence of sigma-phase in SPS processed alloy. Gibbs energy vs composition (G-x) diagrams of binary subsystems and possible carbides and oxides substantiate the absence of sigma-phase during SPS of CoCrFeMnNiV alloy. Thus, the unsolicited contamination during MA-SPS route proves beneficial in suppressing the complex phase formation.
引用
收藏
页数：9
相关论文
共 50 条
  • [21] Microstructure and mechanical properties of the TiZrNbMoTa refractory high-entropy alloy produced by mechanical alloying and spark plasma sintering
    Zhu, Chenglong
    Li, Zhanjiang
    Hong, Chunfu
    Dai, Pinqiang
    Chen, Junfeng
    INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2020, 93
  • [22] Exploring the mechanical and tribological properties of AlCrFeNiTi high-entropy alloy fabricated by mechanical alloying and spark plasma sintering
    Nagarjuna, Cheenepalli
    Dewangan, Sheetal Kumar
    Lee, Hansung
    Lee, Kwan
    Ahn, Byungmin
    VACUUM, 2023, 218
  • [23] Structure formation and mechanical properties of the high-entropy AlCuNiFeCr alloy prepared by mechanical alloying and spark plasma sintering
    Yurkova, A., I
    Cherniaysky, V. V.
    Bolbut, V
    Krueger, M.
    Bogomol, I
    JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 786 : 139 - 148
  • [24] Microstructure and Mechanical Properties of Nanostructured CoCrFeMoTi High-Entropy Alloy Fabricated by Mechanical Alloying and Spark Plasma Sintering
    Torabizadeh, Atia
    Toroghinejad, Mohammad Reza
    Karimzadeh, Fathallah
    Vleugels, Jef
    Ravash, Hamed
    Cavaliere, Pasquale
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2019, 28 (12) : 7710 - 7725
  • [25] Phases, Microstructures and Mechanical Properties of CoCrNiCuZn High-Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
    Sun, Yuchen
    Ke, Boren
    Li, Yulin
    Yang, Kai
    Yang, Mingqi
    Ji, Wei
    Fu, Zhengyi
    ENTROPY, 2019, 21 (02)
  • [26] Phase evolution of CoCrCuFeNiSix high-entropy alloys prepared by mechanical alloying and spark plasma sintering
    Kumar, Anil
    Dhekne, Pushkar
    Swarnakar, Akhilesh Kumar
    Chopkar, Manoj
    MATERIALS RESEARCH EXPRESS, 2019, 6 (02)
  • [27] Exploring Nanocrystalline High Entropy Alloys Fabricated via Mechanical Alloying (MA) and Spark Plasma Sintering (SPS): A Review
    Parisa Moazzen
    Mohammadreza Toroghinejad
    Yahya Aghayar
    Tahereh Zargar
    Farideh Davoodi
    Mohsen Mohammadi
    High Entropy Alloys & Materials, 2024, 2 (2): : 175 - 218
  • [28] Microstructure evolution and magnetic characteristics of a novel high entropy alloy produced by mechanical alloying and spark plasma sintering
    Verma, Pradip Kumar
    Singh, Alok
    Kumar, Akshay
    INTERMETALLICS, 2024, 175
  • [29] Microstructure and properties of aluminium-high entropy alloy composites fabricated by mechanical alloying and spark plasma sintering
    Wang, Nairan
    Wu, Bo
    Wu, Weilong
    Li, Jiu
    Ge, Chunhua
    Dong, Yifan
    Zhang, Lanxiang
    Wang, Yan
    MATERIALS TODAY COMMUNICATIONS, 2020, 25
  • [30] Microstructure and properties of aluminium-high entropy alloy composites fabricated by mechanical alloying and spark plasma sintering
    Wang, Nairan
    Wu, Bo
    Wu, Weilong
    Li, Jiu
    Ge, Chunhua
    Dong, Yifan
    Zhang, Lanxiang
    Wang, Yan
    Materials Today Communications, 2020, 25
12345