Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-24T02:18:10.563Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructure and properties of CoCrNi medium-entropy alloy produced by gas atomization and spark plasma sintering

Published online by Cambridge University Press:  17 April 2019

Jianying Wang ,
Hailin Yang Open the ORCID record for Hailin Yang [Opens in a new window] ,
Jianming Ruan ,
Yun Wang  and
Shouxun Ji
Jianying Wang
Affiliation:
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Hailin Yang*
Affiliation:
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Jianming Ruan
Affiliation:
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Yun Wang
Affiliation:
Institute of Materials and Manufacturing, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K.
Shouxun Ji
Affiliation:
Institute of Materials and Manufacturing, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K.
*
a)Address all correspondence to this author. e-mail: y-hailin@csu.edu.cn
Get access

Abstract

A homogeneous structured CoCrNi medium-entropy alloy was synthesized by gas atomization and spark plasma sintering (SPS). The mechanical properties, corrosion resistance, and magnetic properties were reported in this study. The as-atomized CoCrNi MEA powder, with a spherical morphology in shape and a mean particle diameter of 61 μm, consisted of a single face-centered cubic (FCC) phase with homogeneous distributions of Co, Cr, and Ni elements. Also, the cross-sectional microstructure of powder particles gradually transformed from fully cellular structure into equiaxed-type structure with increasing particle size. After being sintered by SPS, the CoCrNi MEA consisted of a single FCC phase with a mean grain size of 20.8 μm. Meanwhile, the CoCrNi MEA can capable of offering an ultimate tensile strength of 799 MPa, yield strength of 352 MPa, elongation of 53.6%, and hardness of 195.3 HV. In addition, this MEA showed superior corrosion resistance to that of 304 SS (stainless steel) in both 0.5 mol/L HCl and 1 mol/L NaOH solutions. The magnetization loop indicated that this MEA has good soft magnetic properties.

Keywords

corrosionmagnetic propertiespowder metallurgy
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 12 , 28 June 2019 , pp. 2126 - 2136
Copyright
Copyright © Materials Research Society 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Yeh, J.W., Chen, S.K., Lin, S.J., Gan, J.Y., Chin, T.S., Shun, T.T., Tsau, C.H., and Chang, S.Y.: Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes. Adv. Eng. Mater. 6, 299 (2004).CrossRefGoogle Scholar
Cantor, B., Chang, I.T.H., Knight, P., and Vincent, A.J.B.: Microstructural development in equiatomic multicomponent alloys. Mater. Sci. Eng., A 375, 213 (2004).CrossRefGoogle Scholar
Yang, T., Zhao, Y.L., Liu, W.H., Kai, J.J., and Liu, C.: L12-strengthened high-entropy alloys for advanced structural applications. J. Mater. Res. 33, 2983 (2018).CrossRefGoogle Scholar
Li, R.D., Niu, P.D., Yuan, T.C., Cao, P., and Chen, C.: Selective laser melting of an equiatomic CoCrFeMnNi high-entropy alloy: Processability, non-equilibrium microstructure and mechanical property. J. Alloys Compd. 746, 125 (2018).CrossRefGoogle Scholar
Shi, Y., Collins, L., Feng, R., Zhang, C., and Balke, N.: Homogenization of AlxCoCrFeNi high-entropy alloys with improved corrosion resistance. Corros. Sci. 133, 120 (2018).CrossRefGoogle Scholar
Gludovatz, B., Hohenwarter, A., Catoor, D., Chang, E.H., and George, E.P.: A fracture-resistant high-entropy alloy for cryogenic applications. Science 345, 1153 (2014).CrossRefGoogle ScholarPubMed
Zhang, F., Zhang, C., Chen, S.L., Zhu, J., and Cao, W.S.: An understanding of high entropy alloys from phase diagram calculations. Calphad 45, 1 (2014).CrossRefGoogle Scholar
Gail, A. and George, E.P.: Tensile properties of high- and medium-entropy alloys. Intermetallics 39, 74 (2013).CrossRefGoogle Scholar
Wu, Z.G., Guo, W., Jin, K., and Poplawsky, J.D.: Enhanced strength and ductility of a tungsten-doped CoCrNi medium-entropy alloy. J. Mater. Res. 33, 3301 (2018).CrossRefGoogle Scholar
Wang, J.Y., Yang, H.L., Liu, Z.L., Ji, S.X., Li, R.D., and Ruan, J.M.: A novel Fe40Mn40Cr10Co10/SiC medium-entropy nanocomposite reinforced by the nanoparticles-woven architectural structures. J. Alloys Compd. 772, 272 (2019).CrossRefGoogle Scholar
Gludovatz, B., Hohenwarter, A., Thurston, K.V.S., Bei, H., and Wu, Z.: Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures. Nat. Commun. 7, 10602 (2016).CrossRefGoogle ScholarPubMed
Zhao, Y.L., Yang, T., Tong, Y., Wang, J., and Luan, J.H.: Heterogeneous precipitation behavior and stacking-fault-mediated deformation in a CoCrNi-based medium-entropy alloy. Acta Mater. 138, 72 (2017).CrossRefGoogle Scholar
Ma, Y., Yuan, F., Yang, M., Jiang, P., and Ma, E.: Dynamic shear deformation of a CrCoNi medium-entropy alloy with heterogeneous grain structures. Acta Mater. 148, 407 (2018).CrossRefGoogle Scholar
Miao, J., Slone, C.E., Smith, T.M., Niu, C., and Bei, H.: The evolution of the deformation substructure in a Ni–Co–Cr equiatomic solid solution alloy. Acta Mater. 132, 35 (2017).CrossRefGoogle Scholar
Agustianingrum, M.P., Yoshida, S., Tsuji, N., and Park, N.: Effect of aluminum addition on solid solution strengthening in CoCrNi medium-entropy alloy. J. Alloys Compd. 781, 866 (2019).CrossRefGoogle Scholar
Moravcik, I., Cizek, J., Kovacova, Z., Nejezchlebova, J., and Kitzmantel, M.: Mechanical and microstructural characterization of powder metallurgy CoCrNi medium entropy alloy. Mater. Sci. Eng., A 701, 370 (2017).CrossRefGoogle Scholar
Laplanche, G., Kostka, A., Reinhart, C., and Hunfeld, J.: Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi. Acta Mater. 128, 292 (2017).CrossRefGoogle Scholar
Li, Z., Pradeep, K.G., Deng, Y., Raabe, D., and Tasan, C.C.: Metastable high-entropy dual-phase alloys overcome the strength–ductility trade-off. Nature 534, 227 (2016).CrossRefGoogle ScholarPubMed
Wang, J., Guo, T., Li, J., Jia, W., and Kou, H.: Microstructure and mechanical properties of non-equilibrium solidified CoCrFeNi high entropy alloy. Mater. Chem. Phys. 210, 192 (2018).CrossRefGoogle Scholar
Seol, J.B., Bae, J.W., Li, Z., Han, J.C., and Kim, J.G.: Boron doped ultrastrong and ductile high-entropy alloys. Acta Mater. 151, 366 (2018).CrossRefGoogle Scholar
Chew, Y., Bi, G.J., Zhu, Z.G., Ng, F.L., and Weng, F.: Microstructure and enhanced strength of laser aided additive manufactured CoCrFeNiMn high entropy alloy. Mater. Sci. Eng., A 744, 137 (2019).CrossRefGoogle Scholar
Zhu, Z.G., Nguyen, Q.B., Ng, F.L., An, X.H., Liao, X.Z., and Liaw, P.K.: Hierarchical microstructure and strengthening mechanisms of a CoCrFeNiMn high entropy alloy additively manufactured by selective laser melting. Scr. Mater. 154, 20 (2018).CrossRefGoogle Scholar
Joseph, J., Hodgson, P., Jarvis, T., Wu, X.H., and Stanford, N.: Effect of hot isostatic pressing on the microstructure and mechanical properties of additive manufactured AlxCoCrFeNi high entropy alloys. Mater. Sci. Eng., A 733, 59 (2018).CrossRefGoogle Scholar
Hao, W., Zhou, H., Fang, F., Hu, X., and Xie, Z.: Strain-rate effect upon the tensile behavior of CoCrFeNi high-entropy alloys. Mater. Sci. Eng., A 689, 366 (2017).CrossRefGoogle Scholar
Deng, Y., Tasan, C.C., Pradeep, K.G., Springer, H., and Kostka, A.: Design of a twinning-induced plasticity high entropy alloy. Acta Mater. 94, 124 (2015).CrossRefGoogle Scholar
Bhattachajee, T., Zheng, R., Chong, Y., Sheikh, S., and Guo, S.: Effect of low temperature on tensile properties of AlCoCrFeNi2.1 eutectic high entropy alloy. Mater. Chem. Phys. 210, 207 (2018).CrossRefGoogle Scholar
Li, D., Li, C., Feng, T., Zhang, Y., and Sha, G.: High-entropy Al0.3CoCrFeNi alloy fibers with high tensile strength and ductility at ambient and cryogenic temperatures. Acta Mater. 123, 285 (2017).CrossRefGoogle Scholar
Lucas, M.S., Mauger, L., Munoz, J.A., and Xiao, Y.: Magnetic and vibrational properties of high-entropy alloys. J. Appl. Phys. 109, 299 (2011).CrossRefGoogle Scholar
Ji, W., Wang, W., Wang, H., Zhang, J., and Wang, Y.: Alloying behavior and novel properties of CoCrFeNiMn high-entropy alloy fabricated by mechanical alloying and spark plasma sintering. Intermetalllics 56, 24 (2015).CrossRefGoogle Scholar
Zhang, Y., Zuo, T.T., Cheng, Y.Q., and Liaw, P.K.: High-entropy alloys with high saturation magnetization, electrical resistivity, and malleability. Sci. Rep. 3, 1455 (2013).CrossRefGoogle ScholarPubMed
Arsad, A.Z. and Ibrahim, N.B.: Temperature-dependent magnetic properties of YIG thin films with grain size less 12nm prepared by a sol–gel method. J. Magn. Magn. Mater. 15, 70 (2018).CrossRefGoogle Scholar
Qiu, X.W., Zhang, Y.P., and Liu, C.G.: Effect of Ti content on structure and properties of Al2CrFeNiCoCuTix high-entropy alloy coatings. J. Alloys Compd. 585, 282 (2014).CrossRefGoogle Scholar
Qiu, X.W., Zhang, Y.P., He, L., and Liu, C.G.: Microstructure and corrosion resistance of AlCrFeCuCo high entropy alloy. J. Alloys Compd. 549, 195 (2013).CrossRefGoogle Scholar
Rovere, C.A.D., Alano, J.H., Silva, R., Nascente, P.A.P., and Otubo, J.: Characterization of passive films on shape memory stainless steels. Corros. Sci. 57, 154 (2012).CrossRefGoogle Scholar