Effect of sintering temperature on microstructural and mechanical properties of SPS processed CoCrCuFeNi based ODS high entropy alloy

被引：27
作者：
Rao, K. Raja [1 ]
Sinha, Sudip K. [1 ]
机构：
[1] NIT Raipur, Dept Met & Mat Engn, Chhattisgarh 492010, India
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 256卷
关键词：
ODS alloys; Spark plasma sintering; Microstructure; Compressive strength; Mechanical alloying; PHASE EVOLUTION; SOLID-SOLUTION; STEEL; PARTICLES; IRRADIATION; METALLURGY; BEHAVIOR; CARBON; DEFECT;
D O I：
10.1016/j.matchemphys.2020.123709
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present investigation, CoCrCuFeNi based multicomponent nano-scale Y2O3-Ti dispersed oxide dispersion strengthened (ODS) alloys were prepared by mechanical alloying followed by spark plasma sintering (SPS) at three different temperatures (900 degrees C, 1000 degrees C and 1100 degrees C). The microstructures of the as processed SPS samples primarily consist of a combination of F1 and F2 based FCC phases in the matrix in addition to a minor amount of second (Co14.2Cr2.7Y2) phase. Further TEM analysis indicates bimodal grain size distribution with an increasing trend in grain size from 0.110 mu m to 0.883 mu m with an increase in sintering temperature. The best combination of ultimate compressive strength (1555 MPa) and hardness (468 HV) of the SPS processed bulk ODS-HEA has been obtained when sintered at 1000 degrees C. The contribution in yield strength has been estimated using three strengthening mechanisms and the Orowan strengthening model is the most dominating strengthening mechanism in the present ODS-HEA.
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页数：8
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共 39 条
  • [1] Understanding the deformation behavior of CoCuFeMnNi high entropy alloy by investigating mechanical properties of binary ternary and quaternary alloy subsets
    Agarwal, Rani
    Sonkusare, Reshma
    Jha, Saumya R.
    Gurao, N. P.
    Biswas, Krishanu
    Nayan, Niraj
    [J]. MATERIALS & DESIGN, 2018, 157 : 539 - 550
  • [2] On the role of alloy composition and processing parameters in nanocluster formation and dispersion strengthening in nanostuctured ferritic alloys
    Alinger, M. J.
    Odette, G. R.
    Hoelzer, D. T.
    [J]. ACTA MATERIALIA, 2009, 57 (02) : 392 - 406
  • [3] Experiments and Model for Serration Statistics in Low-Entropy, Medium-Entropy, and High-Entropy Alloys
    Carroll, Robert
    Lee, Chi
    Tsai, Che-Wei
    Yeh, Jien-Wei
    Antonaglia, James
    Brinkman, Braden A. W.
    LeBlanc, Michael
    Xie, Xie
    Chen, Shuying
    Liaw, Peter K.
    Dahmen, Karin A.
    [J]. SCIENTIFIC REPORTS, 2015, 5
  • [4] Effect of Ti and C additions on the microstructure and mechanical properties of the FeCoCrNiMn high-entropy alloy
    Chen, Hu
    Chen, Wei
    Liu, Xiaoqiang
    Tang, Qunhua
    Xie, Yanchong
    Dai, Pinqiang
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 719 : 192 - 198
  • [5] Physical metallurgy of concentrated solid solutions from low-entropy to high-entropy alloys
    Cheng, Chun-Yang
    Yang, Ya-Chu
    Zhong, Yi-Zhen
    Chen, Yang-Yuan
    Hsu, Tung
    Yeh, Jien-Wei
    [J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2017, 21 (06) : 299 - 311
  • [6] Fabrication and properties of nanocrystalline Co0.5FeNiCrTi0.5 high entropy alloy by MA-SPS technique
    Fu, Zhiqiang
    Chen, Weiping
    Xiao, Huaqiang
    Zhou, Liwei
    Zhu, Dezhi
    Yang, Shaofeng
    [J]. MATERIALS & DESIGN, 2013, 44 : 535 - 539
  • [7] Strengthening of Al0.3CoCrFeMnNi-based ODS high entropy alloys with incremental changes in the concentration of Y2O3
    Gwalani, Bharat
    Pohan, Rizaldy M.
    Waseem, Owais Ahmed
    Alam, Talukder
    Hong, Soon Hyung
    Ryu, Ho Jin
    Banerjee, Rajarshi
    [J]. SCRIPTA MATERIALIA, 2019, 162 : 477 - 481
  • [8] Oxide dispersion strengthened CoCrFeNiMn high-entropy alloy
    Hadraba, Hynek
    Chlup, Zdenek
    Dlouhy, Antonin
    Dobes, Ferdinand
    Roupcova, Pavia
    Vilemova, Monika
    Matejicek, Jiri
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 689 : 252 - 256
  • [9] Creep response and deformation processes in nanocluster-strengthened ferritic steels
    Hayashi, T.
    Sarosi, P. M.
    Schneibel, J. H.
    Mills, M. J.
    [J]. ACTA MATERIALIA, 2008, 56 (07) : 1407 - 1416
  • [10] 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
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