Columnar to equiaxed transition and grain refinement of cast CrCoNi medium-entropy alloy by microalloying with titanium and carbon

Liu, X. W.; Laplanche, G.; Kostka, A.; Fries, S. G.; Pfetzing-Micklich, J.; Liu, G.; George, E. P.

doi:10.1016/j.jallcom.2018.10.187

Columnar to equiaxed transition and grain refinement of cast CrCoNi medium-entropy alloy by microalloying with titanium and carbon

Journal Article · Wed Oct 17 00:00:00 EDT 2018 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2018.10.187· OSTI ID:1479722

^[1]; Laplanche, G. ^[2]; Kostka, A. ^[3]; Fries, S. G. ^[4]; Pfetzing-Micklich, J. ^[3]; ^[5]; George, E. P. ^[6]

Ruhr Univ., Bochum (Germany). Inst. for Materials. Materials Research Dept. Center for Interface Dominated Materials (ZGH); Huazhong Univ. of Science and Technology, Wuhan (China). State Key Lab. of Materials Processing and Die & Mould Technology
Ruhr Univ., Bochum (Germany). Inst. for Materials
Ruhr Univ., Bochum (Germany). Materials Research Dept. Center for Interface Dominated Materials (ZGH)
Ruhr Univ., Bochum (Germany). Interdisciplinary Centre for Advanced Materials Simulation
Ruhr Univ., Bochum (Germany). Inst. for Materials. Materials Research Dept. Center for Interface Dominated Materials (ZGH)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division; Univ. of Tennessee, Knoxville, TN (United States). Materials Science and Engineering Dept.

Thermomechanical processing has been used to control the grain size/shape of the equiatomic CrCoNi medium-entropy alloy (MEA) and obtain excellent strength and ductility. However, in the cast state, the alloy has coarse columnar grains with average widths and lengths of approximately 120 and 1000 μm, respectively, resulting in inferior mechanical properties. To overcome this deficiency, we microalloyed with Ti and C and successfully changed the grain shape (from columnar to equiaxed) and refined the grain size. The degree to which the microstructure changes depends on the amount of Ti and C added, with the best results obtained at 0.4 at.% each. In the optimal alloy [(CrCoNi)_99.2Ti_0.4C_0.4], the as-cast grains were nearly equiaxed with a uniform size of ~75 μm. Associated with this change in grain shape/size was a significant improvement of yield strength, ultimate tensile strength and elongation to fracture at both 293 and 77 K. Finally, the columnar to equiaxed transition is attributed to the strong mutual affinity of C and Ti, which leads to their build-up ahead of the solid-liquid interface and, in turn, to enhanced constitutional undercooling.

View Accepted Manuscript (DOE)

Research Organization:: Huazhong Univ. of Science and Technology, Wuhan (China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Ruhr Univ., Bochum (Germany)

Sponsoring Organization:: China Scholarship Council; German Research Foundation (DFG); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1479722

Alternate ID(s):: OSTI ID: 1636615

Journal Information:: Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Vol. 775; ISSN 0925-8388

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (57)

Effect of solute content on the grain refinement of binary alloys Abdel-Reihim, M.; Hess, N.; Reif, W. Journal of Materials Science, Vol. 22, Issue 1 https://doi.org/10.1007/BF01160574	journal	January 1987
The role of solute in grain refinement of magnesium Lee, Y. C.; Dahle, A. K.; StJohn, D. H. Metallurgical and Materials Transactions A, Vol. 31, Issue 11 https://doi.org/10.1007/BF02830349	journal	November 2000
A solutal interaction mechanism for the columnar-to-equiaxed transition in alloy solidification Martorano, M. A. Metallurgical and Materials Transactions A, Vol. 35, Issue 6 https://doi.org/10.1007/s11661-004-0101-0	journal	June 2004
The Role of Carbon in Grain Refinement of Cast CrFeCoNi High-Entropy Alloys Liu, X. W.; Liu, L.; Liu, G. Metallurgical and Materials Transactions A, Vol. 49, Issue 6 https://doi.org/10.1007/s11661-018-4549-8	journal	March 2018
Grain refinement of aluminum alloys: Part I. the nucleant and solute paradigms—a review of the literature Easton, Mark; StJohn, David Metallurgical and Materials Transactions A, Vol. 30, Issue 6 https://doi.org/10.1007/s11661-999-0098-5	journal	June 1999
Grain refinement of aluminum alloys: Part II. Confirmation of, and a mechanism for, the solute paradigm Easton, Mark; StJohn, David Metallurgical and Materials Transactions A, Vol. 30, Issue 6 https://doi.org/10.1007/s11661-999-0099-4	journal	June 1999
Processing, Microstructure and Mechanical Properties of the CrMnFeCoNi High-Entropy Alloy Gludovatz, Bernd; George, Easo P.; Ritchie, Robert O. JOM, Vol. 67, Issue 10 https://doi.org/10.1007/s11837-015-1589-z	journal	August 2015
The dependence of polycrystal work hardening on grain size Thompson, Anthony W.; Baskes, Michael I.; Flanagan, William F. Acta Metallurgica, Vol. 21, Issue 7 https://doi.org/10.1016/0001-6160(73)90158-2	journal	July 1973
Reaction in Al–TiC metal matrix composites Kennedy, A. R.; Weston, D. P.; Jones, M. I. Materials Science and Engineering: A, Vol. 316, Issue 1-2 https://doi.org/10.1016/S0921-5093(01)01228-X	journal	November 2001
FeAl–TiC and FeAl–WC composites—melt infiltration processing, microstructure and mechanical properties Subramanian, R.; Schneibel, J. H. Materials Science and Engineering: A, Vol. 244, Issue 1 https://doi.org/10.1016/S0921-5093(97)00833-2	journal	March 1998
Mechanisms of Solidification Structure Improvement of Ultra Pure 17 wt% Cr Ferritic Stainless Steel by Ti, Nb Addition Shan, Yating; Luo, Xinghong; Hu, Xiaoqiang Journal of Materials Science & Technology, Vol. 27, Issue 4 https://doi.org/10.1016/S1005-0302(11)60073-X	journal	April 2011
Modelling of inoculation of metallic melts: application to grain refinement of aluminium by Al–Ti–B Greer, A. L.; Bunn, A. M.; Tronche, A. Acta Materialia, Vol. 48, Issue 11 https://doi.org/10.1016/S1359-6454(00)00094-X	journal	June 2000
A model of grain refinement incorporating alloy constitution and potency of heterogeneous nucleant particles Easton, M. A.; StJohn, D. H. Acta Materialia, Vol. 49, Issue 10 https://doi.org/10.1016/S1359-6454(00)00368-2	journal	June 2001
Enhanced growth of intermetallic phases in the Ni–Ti system by current effects Garay, J. E.; Anselmi-Tamburini, U.; Munir, Z. A. Acta Materialia, Vol. 51, Issue 15 https://doi.org/10.1016/S1359-6454(03)00284-2	journal	September 2003
Grain refinement of AZ31 by (SiC)P: Theoretical calculation and experiment Günther, R.; Hartig, Ch.; Bormann, R. Acta Materialia, Vol. 54, Issue 20 https://doi.org/10.1016/j.actamat.2006.07.035	journal	December 2006
A three-dimensional cellular automaton model for dendritic growth in multi-component alloys Zhang, Xianfei; Zhao, Jiuzhou; Jiang, Hongxiang Acta Materialia, Vol. 60, Issue 5 https://doi.org/10.1016/j.actamat.2011.12.045	journal	March 2012
Sluggish diffusion in Co–Cr–Fe–Mn–Ni high-entropy alloys Tsai, K. -Y.; Tsai, M. -H.; Yeh, J. -W. Acta Materialia, Vol. 61, Issue 13 https://doi.org/10.1016/j.actamat.2013.04.058	journal	August 2013
The grain refinement mechanism of cast aluminium by zirconium Wang, Feng; Qiu, Dong; Liu, Zhi-Lin Acta Materialia, Vol. 61, Issue 15 https://doi.org/10.1016/j.actamat.2013.05.044	journal	September 2013
The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy Otto, F.; Dlouhý, A.; Somsen, Ch. Acta Materialia, Vol. 61, Issue 15 https://doi.org/10.1016/j.actamat.2013.06.018	journal	September 2013
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al–15Cu alloy Liotti, E.; Lui, A.; Vincent, R. Acta Materialia, Vol. 70 https://doi.org/10.1016/j.actamat.2014.02.024	journal	May 2014
Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures Wu, Z.; Bei, H.; Pharr, G. M. Acta Materialia, Vol. 81 https://doi.org/10.1016/j.actamat.2014.08.026	journal	December 2014
Insights into the phase diagram of the CrMnFeCoNi high entropy alloy Laurent-Brocq, Mathilde; Akhatova, Alfiya; Perrière, Loïc Acta Materialia, Vol. 88 https://doi.org/10.1016/j.actamat.2015.01.068	journal	April 2015
Ab initio thermodynamics of the CoCrFeMnNi high entropy alloy: Importance of entropy contributions beyond the configurational one Ma, Duancheng; Grabowski, Blazej; Körmann, Fritz Acta Materialia, Vol. 100 https://doi.org/10.1016/j.actamat.2015.08.050	journal	November 2015
Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures Otto, F.; Dlouhý, A.; Pradeep, K. G. Acta Materialia, Vol. 112 https://doi.org/10.1016/j.actamat.2016.04.005	journal	June 2016
Microstructure evolution and critical stress for twinning in the CrMnFeCoNi high-entropy alloy Laplanche, G.; Kostka, A.; Horst, O. M. Acta Materialia, Vol. 118 https://doi.org/10.1016/j.actamat.2016.07.038	journal	October 2016
The fcc solid solution stability in the Co-Cr-Fe-Mn-Ni multi-component system Bracq, Guillaume; Laurent-Brocq, Mathilde; Perrière, Loïc Acta Materialia, Vol. 128 https://doi.org/10.1016/j.actamat.2017.02.017	journal	April 2017
Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi Laplanche, G.; Kostka, A.; Reinhart, C. Acta Materialia, Vol. 128 https://doi.org/10.1016/j.actamat.2017.02.036	journal	April 2017
The evolution of the deformation substructure in a Ni-Co-Cr equiatomic solid solution alloy Miao, J.; Slone, C. E.; Smith, T. M. Acta Materialia, Vol. 132 https://doi.org/10.1016/j.actamat.2017.04.033	journal	June 2017
Heterogeneous precipitation behavior and stacking-fault-mediated deformation in a CoCrNi-based medium-entropy alloy Zhao, Y. L.; Yang, T.; Tong, Y. Acta Materialia, Vol. 138 https://doi.org/10.1016/j.actamat.2017.07.029	journal	October 2017
Thermal activation parameters of plastic flow reveal deformation mechanisms in the CrMnFeCoNi high-entropy alloy Laplanche, G.; Bonneville, J.; Varvenne, C. Acta Materialia, Vol. 143 https://doi.org/10.1016/j.actamat.2017.10.014	journal	January 2018
Critical stress for twinning nucleation in CrCoNi-based medium and high entropy alloys Huang, He; Li, Xiaoqing; Dong, Zhihua Acta Materialia, Vol. 149 https://doi.org/10.1016/j.actamat.2018.02.037	journal	May 2018
Boron doped ultrastrong and ductile high-entropy alloys Seol, Jae Bok; Bae, Jae Wung; Li, Zhiming Acta Materialia, Vol. 151 https://doi.org/10.1016/j.actamat.2018.04.004	journal	June 2018
Tensile properties of high- and medium-entropy alloys Gali, A.; George, E. P. Intermetallics, Vol. 39 https://doi.org/10.1016/j.intermet.2013.03.018	journal	August 2013
Microstructural evolution after thermomechanical processing in an equiatomic, single-phase CoCrFeMnNi high-entropy alloy with special focus on twin boundaries Otto, F.; Hanold, N. L.; George, E. P. Intermetallics, Vol. 54 https://doi.org/10.1016/j.intermet.2014.05.014	journal	November 2014
An assessment on the future development of high-entropy alloys: Summary from a recent workshop Lu, Z. P.; Wang, H.; Chen, M. W. Intermetallics, Vol. 66 https://doi.org/10.1016/j.intermet.2015.06.021	journal	November 2015
The effect of melting temperature and time on the TiC particles Jiang, Kun; Liu, Xiangfa Journal of Alloys and Compounds, Vol. 484, Issue 1-2 https://doi.org/10.1016/j.jallcom.2009.04.112	journal	September 2009
Temperature dependencies of the elastic moduli and thermal expansion coefficient of an equiatomic, single-phase CoCrFeMnNi high-entropy alloy Laplanche, G.; Gadaud, P.; Horst, O. Journal of Alloys and Compounds, Vol. 623 https://doi.org/10.1016/j.jallcom.2014.11.061	journal	February 2015
Nano-twin mediated plasticity in carbon-containing FeNiCoCrMn high entropy alloys Wu, Z.; Parish, C. M.; Bei, H. Journal of Alloys and Compounds, Vol. 647 https://doi.org/10.1016/j.jallcom.2015.05.224	journal	October 2015
Effect of carbon content and annealing on structure and hardness of the CoCrFeNiMn-based high entropy alloys Stepanov, N. D.; Yurchenko, N. Yu.; Tikhonovsky, M. A. Journal of Alloys and Compounds, Vol. 687 https://doi.org/10.1016/j.jallcom.2016.06.103	journal	December 2016
Effect of thermomechanical processing on microstructure and mechanical properties of the carbon-containing CoCrFeNiMn high entropy alloy Stepanov, N. D.; Shaysultanov, D. G.; Chernichenko, R. S. Journal of Alloys and Compounds, Vol. 693 https://doi.org/10.1016/j.jallcom.2016.09.208	journal	February 2017
Elastic moduli and thermal expansion coefficients of medium-entropy subsystems of the CrMnFeCoNi high-entropy alloy Laplanche, G.; Gadaud, P.; Bärsch, C. Journal of Alloys and Compounds, Vol. 746 https://doi.org/10.1016/j.jallcom.2018.02.251	journal	May 2018
Microstructural development in equiatomic multicomponent alloys Cantor, B.; Chang, I. T. H.; Knight, P. Materials Science and Engineering: A, Vol. 375-377 https://doi.org/10.1016/j.msea.2003.10.257	journal	July 2004
First-principles studies of the structural, elastic, electronic and thermal properties of γ′-Ni3Ti Cao, Yong; Zhu, Jingchuan; Liu, Yong Physica B: Condensed Matter, Vol. 412 https://doi.org/10.1016/j.physb.2012.12.020	journal	March 2013
Crystal chemistry and Calphad modeling of the σ phase Joubert, J. -M. Progress in Materials Science, Vol. 53, Issue 3 https://doi.org/10.1016/j.pmatsci.2007.04.001	journal	March 2008
A model for the grain size dependent work hardening of copper Sinclair, C. W.; Poole, W. J.; Bréchet, Y. Scripta Materialia, Vol. 55, Issue 8 https://doi.org/10.1016/j.scriptamat.2006.05.018	journal	October 2006
Grain growth and the Hall–Petch relationship in a high-entropy FeCrNiCoMn alloy Liu, W. H.; Wu, Y.; He, J. Y. Scripta Materialia, Vol. 68, Issue 7 https://doi.org/10.1016/j.scriptamat.2012.12.002	journal	April 2013
Precipitation in the equiatomic high-entropy alloy CrMnFeCoNi Pickering, E. J.; Muñoz-Moreno, R.; Stone, H. J. Scripta Materialia, Vol. 113 https://doi.org/10.1016/j.scriptamat.2015.10.025	journal	March 2016
Phase separation of metastable CoCrFeNi high entropy alloy at intermediate temperatures He, Feng; Wang, Zhijun; Wu, Qingfeng Scripta Materialia, Vol. 126 https://doi.org/10.1016/j.scriptamat.2016.08.008	journal	January 2017
Friction stress and Hall-Petch relationship in CoCrNi equi-atomic medium entropy alloy processed by severe plastic deformation and subsequent annealing Yoshida, Shuhei; Bhattacharjee, Tilak; Bai, Yu Scripta Materialia, Vol. 134 https://doi.org/10.1016/j.scriptamat.2017.02.042	journal	June 2017
Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi Zhang, ZiJiao; Mao, M. M.; Wang, Jiangwei Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms10143	journal	December 2015
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures Gludovatz, Bernd; Hohenwarter, Anton; Thurston, Keli V. S. Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms10602	journal	February 2016
Atomic displacement in the CrMnFeCoNi high-entropy alloy – A scaling factor to predict solid solution strengthening Okamoto, Norihiko L.; Yuge, Koretaka; Tanaka, Katsushi AIP Advances, Vol. 6, Issue 12 https://doi.org/10.1063/1.4971371	journal	December 2016
Dynamically reinforced heterogeneous grain structure prolongs ductility in a medium-entropy alloy with gigapascal yield strength Yang, Muxin; Yan, Dingshun; Yuan, Fuping Proceedings of the National Academy of Sciences, Vol. 115, Issue 28 https://doi.org/10.1073/pnas.1807817115	journal	June 2018
On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys Uzer, Benay; Picak, S.; Liu, J. Materials Research Letters, Vol. 6, Issue 8 https://doi.org/10.1080/21663831.2018.1478331	journal	June 2018
Microstructure and texture evolution during severe plastic deformation of CrMnFeCoNi high-entropy alloy Skrotzki, W.; Pukenas, A.; Joni, B. IOP Conference Series: Materials Science and Engineering, Vol. 194 https://doi.org/10.1088/1757-899X/194/1/012028	journal	May 2017
Magnetic properties of the CrMnFeCoNi high-entropy alloy Schneeweiss, Oldřich; Friák, Martin; Dudová, Marie Physical Review B, Vol. 96, Issue 1 https://doi.org/10.1103/PhysRevB.96.014437	journal	July 2017
A fracture-resistant high-entropy alloy for cryogenic applications Gludovatz, B.; Hohenwarter, A.; Catoor, D. Science, Vol. 345, Issue 6201 https://doi.org/10.1126/science.1254581	journal	September 2014

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cast microstructure
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