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In situ neutron diffraction study on tensile deformation behavior of carbon-strengthened CoCrFeMnNi high-entropy alloys at room and elevated temperatures

Published online by Cambridge University Press:  22 June 2018

Tingkun Liu
Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA; and Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Yanfei Gao*
Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA; and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Hongbin Bei*
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Ke An*
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
a)Address all correspondence to these authors. e-mail:
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Carbon is doped into a CoCrFeMnNi high-entropy alloy as an interstitial atom, improving the single phase solid solution alloy with a good combination of strength and ductility at room temperature by introducing deformation twins. In situ neutron diffraction (ND) is applied to investigate the carbon-doped CoCrFeMnNi deformation mechanism and micromechanical behaviors during uniaxial tension at room and elevated temperatures. With in situ results accompanied with the microstructure and texture measurement, it is found that the plastic deformation is dominated by dislocation slip at an early stage at both temperatures. However, at high strain level, deformation is mediated simultaneously by deformation twins and microbands at room temperature, while it is governed solely by microbands at elevated temperature of 573 K. The evolution of lattice strain, peak intensity, and peak width from in situ ND elucidates the micromechanical behaviors regarding the role of slips and twins. The texture represented by orientation distribution function indicates that the initial specimen possesses a relatively strong {112}〈110〉 texture component, and the room-temperature tension deformed texture comprises of slip-induced fiber texture and twinning-induced {115}〈552〉 texture component.

Copyright © Materials Research Society 2018 

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This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (



Cantor, B., Chang, I., Knight, P., and Vincent, A.: Microstructural development in equiatomic multicomponent alloys. Mater. Sci. Eng., A 375, 213 (2004).CrossRefGoogle Scholar
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
Jien-Wei, Y.: Recent progress in high entropy alloys. Ann. Chimie Sci. Matériaux 31, 633 (2006).Google Scholar
Tsai, M-H. and Yeh, J-W.: High-entropy alloys: A critical review. Mater. Res. Lett. 2, 107 (2014).CrossRefGoogle Scholar
Gludovatz, B., Hohenwarter, A., Catoor, D., Chang, E.H., George, E.P., and Ritchie, R.O.: A fracture-resistant high-entropy alloy for cryogenic applications. Science 345, 1153 (2014).CrossRefGoogle ScholarPubMed
Zhang, Y., Zuo, T.T., Tang, Z., Gao, M.C., Dahmen, K.A., Liaw, P.K., and Lu, Z.P.: Microstructures and properties of high-entropy alloys. Prog Mater Sci. 61, 1 (2014).CrossRefGoogle Scholar
Lu, Z., Wang, H., Chen, M., Baker, I., Yeh, J., Liu, C.T., and Nieh, T.: An assessment on the future development of high-entropy alloys: Summary from a recent workshop. Intermetallics 66, 67 (2015).CrossRefGoogle Scholar
Zhang, W., Liaw, P.K., and Zhang, Y.: Science and technology in high-entropy alloys. Sci. China Mater. 61, 1 (2018).CrossRefGoogle Scholar
Wu, Z., Parish, C.M., and Bei, H.: Nano-twin mediated plasticity in carbon-containing FeNiCoCrMn high entropy alloys. J. Alloys Compd. 647, 815 (2015).CrossRefGoogle Scholar
Wang, Z., Baker, I., Cai, Z., Chen, S., Poplawsky, J.D., and Guo, W.: The effect of interstitial carbon on the mechanical properties and dislocation substructure evolution in Fe40.4Ni11.3Mn34.8Al7.5Cr6 high entropy alloys. Acta Mater. 120, 228 (2016).CrossRefGoogle Scholar
Wang, Z. and Baker, I.: Interstitial strengthening of a FCC FeNiMnAlCr high entropy alloy. Mater. Lett. 180, 153 (2016).CrossRefGoogle Scholar
Xie, Y.C., Cheng, H., Tang, Q.H., Chen, W., Chen, W.K., and Dai, P.Q.: Effects of N addition on microstructure and mechanical properties of CoCrFeNiMn high entropy alloy produced by mechanical alloying and vacuum hot pressing sintering. Intermetallics 93, 228 (2018).CrossRefGoogle Scholar
Huang, T.D., Jiang, L., Zhang, C.L., Jiang, H., Lu, Y.P., and Li, T.J.: Effect of carbon addition on the microstructure and mechanical properties of CoCrFeNi high entropy alloy. Sci. China: Technol. Sci. 61, 117 (2018).CrossRefGoogle Scholar
Stepanov, N., Yurchenko, N.Y., Tikhonovsky, M., and Salishchev, G.: Effect of carbon content and annealing on structure and hardness of the CoCrFeNiMn-based high entropy alloys. J. Alloys Compd. 687, 59 (2016).CrossRefGoogle Scholar
Stepanov, N.D., Shaysultanov, D.G., Chernichenko, R.S., Yurchenko, N.Y., Zherebtsov, S.V., Tikhonovsky, M.A., and Salishchev, G.A.: Effect of thermomechanical processing on microstructure and mechanical properties of the carbon-containing CoCrFeNiMn high entropy alloy. J. Alloys Compd. 693, 394 (2017).CrossRefGoogle Scholar
Yu, D., An, K., Chen, Y., and Chen, X.: Revealing the cyclic hardening mechanism of an austenitic stainless steel by real-time in situ neutron diffraction. Scr. Mater. 89, 45 (2014).CrossRefGoogle Scholar
Agnew, S., Singh, A., Calhoun, C., Mulay, R., Bhattacharyya, J., Somekawa, H., Mukai, T., Clausen, B., and Wu, P.: In situ neutron diffraction of a quasicrystal-containing Mg alloy interpreted using a new polycrystal plasticity model of hardening due to {10.2} tensile twinning. Int. J. Plast. 100, 34 (2018).CrossRefGoogle Scholar
Voothaluru, R., Bedekar, V., Xie, Q., Stoica, A.D., Hyde, R.S., and An, K.: In situ neutron diffraction and crystal plasticity finite element modeling to study the kinematic stability of retained austenite in bearing steels. Mater. Sci. Eng., A 711, 579 (2018).CrossRefGoogle Scholar
Xie, Q., Liang, J., Stoica, A.D., Li, R., Yang, P., Zhao, Z., Wang, J., Lan, H., and An, K.: In situ neutron diffraction study on the tension-compression fatigue behavior of a twinning induced plasticity steel. Scr. Mater. 137, 83 (2017).CrossRefGoogle Scholar
Wu, Y., Ma, D., Li, Q., Stoica, A., Song, W., Wang, H., Liu, X., Stoica, G., Wang, G., and An, K.: Transformation-induced plasticity in bulk metallic glass composites evidenced by in situ neutron diffraction. Acta Mater. 124, 478 (2017).CrossRefGoogle Scholar
Xie, Q., Chen, Y., Yang, P., Zhao, Z., Wang, Y., and An, K.: In situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel. Scr. Mater. 150, 168 (2018).CrossRefGoogle Scholar
Wu, W., An, K., Huang, L., Lee, S.Y., and Liaw, P.K.: Deformation dynamics study of a wrought magnesium alloy by real-time in situ neutron diffraction. Scr. Mater. 69, 358 (2013).CrossRefGoogle Scholar
Van Petegem, S., Wagner, J., Panzner, T., Upadhyay, M., Trang, T., and Van Swygenhoven, H.: In situ neutron diffraction during biaxial deformation. Acta Mater. 105, 404 (2016).CrossRefGoogle Scholar
Huang, E-W., Yu, D., Yeh, J-W., Lee, C., An, K., and Tu, S-Y.: A study of lattice elasticity from low entropy metals to medium and high entropy alloys. Scr. Mater. 101, 32 (2015).CrossRefGoogle Scholar
Woo, W., Huang, E.W., Yeh, J.W., Choo, H., Lee, C., and Tu, S.Y.: In situ neutron diffraction studies on high-temperature deformation behavior in a CoCrFeMnNi high entropy alloy. Intermetallics 62, 1 (2015).CrossRefGoogle Scholar
Wu, Y., Liu, W.H., Wang, X.L., Ma, D., Stoica, A.D., Nieh, T.G., He, Z.B., and Lu, Z.P.: In situ neutron diffraction study of deformation behavior of a multi-component high-entropy alloy. Appl. Phys. Lett. 104, 051910-5 (2014).CrossRefGoogle Scholar
Cai, B., Liu, B., Kabra, S., Wang, Y.Q., Yan, K., Lee, P.D., and Liu, Y.: Deformation mechanisms of Mo alloyed FeCoCrNi high entropy alloy: In situ neutron diffraction. Acta Mater. 127, 471 (2017).CrossRefGoogle Scholar
Laplanche, G., Kostka, A., Horst, O., Eggeler, G., and George, E.: Microstructure evolution and critical stress for twinning in the CrMnFeCoNi high-entropy alloy. Acta Mater. 118, 152 (2016).CrossRefGoogle Scholar
An, K., Skorpenske, H.D., Stoica, A.D., Ma, D., Wang, X.L., and Cakmak, E.: First in situ lattice strains measurements under load at VULCAN. Metall. Mater. Trans. A 42, 95 (2011).CrossRefGoogle Scholar
Yoo, J.D. and Park, K.T.: Microband-induced plasticity in a high Mn–Al–C light steel. Mater. Sci. Eng., A 496, 417 (2008).CrossRefGoogle Scholar
Saleh, A.A., Pereloma, E.V., Clausen, B., Brown, D.W., Tome, C.N., and Gazder, A.A.: Self-consistent modelling of lattice strains during the in situ tensile loading of twinning induced plasticity steel. Mater. Sci. Eng., A 589, 66 (2014).CrossRefGoogle Scholar
Huang, E.W., Barabash, R., Jia, N., Wang, Y.D., Ice, G., Clausen, B., Horton, J., and Liaw, P.K.: Slip-system-related dislocation study from in situ neutron measurements. Metall. Mater. Trans. A 39a, 3079 (2008).CrossRefGoogle Scholar
Kabra, S., Danion, S., Kockelmann, W., and Zhang, S.Y.: A neutron diffraction study of texture evolution under deformation in a hot rolled TWIP steel. Mater. Today 2, 261 (2015).CrossRefGoogle Scholar
Liu, T.K., Wu, Z., Stoica, A.D., Xie, Q., Wu, W., Gao, Y.F., Bei, H., and An, K.: Twinning-mediated work hardening and texture evolution in CrCoFeMnNi high entropy alloys at cryogenic temperature. Mater. Des. 131, 419 (2017).CrossRefGoogle Scholar
Ungar, T., Gubicza, J., Ribarik, G., and Borbely, A.: Crystallite size distribution and dislocation structure determined by diffraction profile analysis: Principles and practical application to cubic and hexagonal crystals. J. Appl. Crystallogr. 34, 298 (2001).CrossRefGoogle Scholar
Ungar, T., Ribarik, G., Gubicza, J., and Hanak, P.: Dislocation structure and crystallite size distribution in plastically deformed metals determined by diffraction peak profile analysis. J. Eng. Mater. Technol. 124, 2 (2002).CrossRefGoogle Scholar
Christian, J.W. and Mahajan, S.: Deformation twinning. Prog Mater Sci. 39, 1 (1995).CrossRefGoogle Scholar
Yan, K., Carr, D.G., Callaghan, M.D., Liss, K.D., and Li, H.J.: Deformation mechanisms of twinning-induced plasticity steels: In situ synchrotron characterization and modeling. Scr. Mater. 62, 246 (2010).CrossRefGoogle Scholar
Kröner, E.: Berechnung der elastischen Konstanten des Vielkristalls aus den Konstanten des Einkristalls. Z. Phys. 151, 504 (1958).CrossRefGoogle Scholar
Wang, Z., Stoica, A.D., Ma, D., and Beese, A.M.: Diffraction and single-crystal elastic constants of inconel 625 at room and elevated temperatures determined by neutron diffraction. Mater. Sci. Eng., A 674, 406 (2016).CrossRefGoogle Scholar
Brown, D., Bourke, M., Stout, M., Dunn, P., Field, R., and Thoma, D.: Uniaxial tensile deformation of uranium 6 wt% niobium: A neutron diffraction study of deformation twinning. Metall. Mater. Trans. A 32, 2219 (2001).CrossRefGoogle Scholar
Wu, Z., Gao, Y., and Bei, H.: Thermal activation mechanisms and labusch-type strengthening analysis for a family of high-entropy and equiatomic solid-solution alloys. Acta Mater. 120, 108 (2016).CrossRefGoogle Scholar
Varvenne, C., Luque, A., and Curtin, W.A.: Theory of strengthening in FCC high entropy alloys. Acta Mater. 118, 164 (2016).CrossRefGoogle Scholar
Idrissi, H., Renard, K., Ryelandt, L., Schryvers, D., and Jacques, P.: On the mechanism of twin formation in Fe–Mn–C TWIP steels. Acta Mater. 58, 2464 (2010).CrossRefGoogle Scholar
Rahman, K., Vorontsov, V., and Dye, D.: The effect of grain size on the twin initiation stress in a TWIP steel. Acta Mater. 89, 247 (2015).CrossRefGoogle Scholar
Mahajan, S. and Chin, G.: Formation of deformation twins in FCC crystals. Acta Metall. 21, 1353 (1973).CrossRefGoogle Scholar
Gutierrez-Urrutia, I. and Raabe, D.: Multistage strain hardening through dislocation substructure and twinning in a high strength and ductile weight-reduced Fe–Mn–Al–C steel. Acta Mater. 60, 5791 (2012).CrossRefGoogle Scholar
Bouaziz, O., Allain, S., Scott, C., Cugy, P., and Barbier, D.: High manganese austenitic twinning induced plasticity steels: A review of the microstructure properties relationships. Curr. Opin. Solid State Mater. Sci. 15, 141 (2011).CrossRefGoogle Scholar
McCabe, R.J., Beyerlein, I.J., Carpenter, J.S., and Mara, N.A.: The critical role of grain orientation and applied stress in nanoscale twinning. Nat. Commun. 5, 3806 (2014).CrossRefGoogle ScholarPubMed
An, K.: VDRIVE—Data Reduction and Interactive Visualization Software for Event Mode Neutron Diffraction; ORNL Report, ORNL-TM-2012-621, Oak Ridge National Laboratory, 2012.Google Scholar
Hielscher, R.A. and Schaeben, H.: A novel pole figure inversion method: Specification of the MTEX algorithm. J. Appl. Crystallogr. 41, 10241037 (2008).CrossRefGoogle Scholar