Plastic deformation mechanisms of equiatomic Ni20Ti20Fe20Al20Cu20 high-entropy alloy at high temperatures
Source abstract
Abstract
A novel equiatomic Ni20Ti20Fe20Al20Cu20 high-entropy alloy was designed and fabricated in order to investigate plastic deformation mechanisms at high temperatures. Plenty of nano-precipitates are able to be observed in the as-cast high-entropy alloy. The nano-precipitate belongs to a face-centered cubic (FCC) structure, while the matrix possesses a body-centered cubic (BCC) structure. The high-entropy alloy exhibits the poor plasticity at room temperature, but it exhibits the high plasticity at elevated temperatures. The nano-precipitates gradually grow with the increase in the deformation temperature at elevated temperatures, where there exists an orientation relationship of [011]FCC//[011]BCC between the precipitate and the matrix. The plastic flow stress of Ni20Ti20Fe20Al20Cu20 high-entropy alloy at elevated temperatures is characterized by a steady state, which can be attributed to a competition between the increase of dislocation density due to plastic strain and the decrease of dislocation density due to dynamic recrystallization. In the case of elevated temperatures, plastic deformation mechanism for dislocation slip occurs in the matrix of Ni20Ti20Fe20Al20Cu20 high-entropy alloy, while plastic deformation mechanism for deformation twinning is dominant in the precipitates. Therefore, dislocation slip and deformation twinning play a significant role in plastic deformation of Ni20Ti20Fe20Al20Cu20 high-entropy alloy at elevated temperatures.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Yao MJ, Pradeep KG, Tasan CC, Raabe D (2014) A novel, single phase, non-equiatomic FeMnNiCoCr high-entropy alloy with exceptional phase stability and tensile ductility. Scr Mater 72–73:5–8
2. Tian F, Varga LK, Chen N, Shen J, Vitos L (2014) Ab initio design of elastically isotropic TiZrNbMoVx high-entropy alloys. J Alloy Compd 599:19–2510.1016/j.jallcom.2014.01.237 ↗
3. Lilensten L, Couzinié JP, Perrière L, Bourgon J, Emery N, Guillot I (2014) New structure in refractory high-entropy alloys. Mater Lett 132:123–12510.1016/j.matlet.2014.06.064 ↗
4. Wilson P, Field R, Kaufman M (2016) The use of diffusion multiples to examine the compositional dependence of phase stability and hardness of the Co–Cr–Fe–Mn–Ni high entropy alloy system. Intermetallics 75:15–2410.1016/j.intermet.2016.04.007 ↗
5. Yu Y, Wang J, Li J, Kou H, Liu W (2015) Characterization of BCC phases in AlCoCrFeNiTix high entropy alloys. Mater Lett 138:78–8010.1016/j.matlet.2014.09.100 ↗
6. Couzinié JP, Dirras G, Perrière L, Chauveau T, Leroy E, Champion Y, Guillot I (2014) Microstructure of a near-equimolar refractory high-entropy alloy. Mater Lett 126:285–28710.1016/j.matlet.2014.04.062 ↗
7. Xu XD, Liu P, Guo S, Hirata A, Fujita T, Nieh TG, Liu CT, Chen MW (2015) Nanoscale phase separation in a fcc-based CoCrCuFeNiAl 0.5 high-entropy alloy. Acta Mater 84:145–15210.1016/j.actamat.2014.10.033 ↗
8. Anand G, Goodall R, Freeman CL (2016) Role of configurational entropy in body-centred cubic or face-centred cubic phase formation in high entropy alloys. Scr Mater 124:90–9410.1016/j.scriptamat.2016.07.001 ↗
9. Roy U, Roy H, Daoud H, Glatzel U, Ray KK (2014) Fracture toughness and fracture micromechanism in a cast AlCoCrCuFeNi high entropy alloy system. Mater Lett 132:186–18910.1016/j.matlet.2014.06.067 ↗
10. Wu YD, Cai YH, Wang T, Si JJ, Zhu J, Wang YD, Hui XD (2014) A refractory Hf25Nb25Ti25Zr25 high-entropy alloy with excellent structural stability and tensile properties. Mater Lett 130:277–28010.1016/j.matlet.2014.05.134 ↗
11. Tang QH, Huang Y, Huang YY, Liao XZ, Langdon TG, Dai PQ (2015) Hardening of an Al0.3CoCrFeNi high entropy alloy via high-pressure torsion and thermal annealing. Mater Lett 151:126–12910.1016/j.matlet.2015.03.066 ↗
12. Pi JH, Pan Y, Zhang L, Zhang H (2011) Microstructure and property of AlTiCrFeNiCu high-entropy alloy. J Alloys Compd 509:5641–564510.1016/j.jallcom.2011.02.108 ↗
13. Wang YP, Li BS, Ren MX, Yang C, Fu HZ (2008) Microstructure and compressive properties of AlCrFeCoNi high entropy alloy. Mater Sci Eng A 491:154–15810.1016/j.msea.2008.01.064 ↗
14. Lu Y, Dong Y, Guo S, Jiang L, Kang H, Wang T, Wen B, Wang Z, Jie J, Cao Z, Ruan H, Li T (2014) A promising new class of high-temperature alloys: eutectic high-entropy alloys. Sci Rep 4:6200. doi: 10.1038/srep0620010.1038/srep06200 ↗
15. Dong Y, Gao X, Lu Y, Wang T, Li T (2016) A multi-component AlCrFe2Ni2 alloy with excellent mechanical properties. Mater Lett 169:62–6410.1016/j.matlet.2016.01.096 ↗
16. Dong Y, Lu Y, Kong J, Zhang J, Li T (2013) Microstructure and mechanical properties of multi-component AlCrFeNiMox high-entropy alloys. J Alloys Compd 573:96–10110.1016/j.jallcom.2013.03.253 ↗
17. Pi J, Pan Y, Zhang H, Zhang L (2012) Microstructure and properties of AlCrFeCuNix (0.6 ≤ x≤1.4) high-entropy alloys. Mater Sci Eng A 534:228–23310.1016/j.msea.2011.11.063 ↗
18. Stepanov ND, Shaysultanov DG, Salishchev GA, Tikhonovsky MA (2015) Structure and mechanical properties of a light-weight AlNbTiV high entropy alloy. Mater Lett 142:153–15510.1016/j.matlet.2014.11.162 ↗
19. Liu L, Zhu JB, Zhang C, Li JC, Jiang Q (2012) Microstructure and the properties of FeCoCuNiSnx high entropy alloys. Mater Sci Eng A 548:64–6810.1016/j.msea.2012.03.080 ↗
20. Munitz A, Salhov S, Hayun S, Frage N (2016) Heat treatment impacts the micro-structure and mechanical properties of AlCoCrFeNi high entropy alloy. J Alloy Compd 683:221–23010.1016/j.jallcom.2016.05.034 ↗
21. Zhang Y, Zuo TT, Tang Z, Gao MC, Dahmen KA, Liaw PK, Lu ZP (2014) Microstructures and properties of high-entropy alloys. Prog Mater Sci 61:1–9310.1016/j.pmatsci.2013.10.001 ↗
22. Kuznetsov AV, Shaysultanov DG, Stepanov ND, Salishchev GA, Senkov ON (2012) Tensile properties of an AlCrCuNiFeCo high-entropy alloy in as-cast and wrought conditions. Mater Sci Eng A 533:107–11810.1016/j.msea.2011.11.045 ↗
23. Nayan N, Singh G, Murty SVSN, Jha AK, Pant B, George KM, Ramamurty U (2014) Hot deformation behaviour and microstructure control in AlCrCuNiFeCo high entropy alloy. Intermetallics 55:145–15310.1016/j.intermet.2014.07.019 ↗
24. He JY, Zhu C, Zhou DQ, Liu WH, Nieh TG, Lu ZP (2014) Steady state flow of the FeCoNiCrMn high entropy alloy at elevated temperatures. Intermetallics 55:9–1410.1016/j.intermet.2014.06.015 ↗
25. Wu D, Jang JSC, Nieh TG (2016) Elastic and plastic deformations in a high entropy alloy investigated using a nanoindentation method. Intermetallics 68:118–12710.1016/j.intermet.2015.10.002 ↗
26. Wani IS, Sathiaraj GD, Ahmed M, Reddy SR, Bhattacharjee PP (2016) Evolution of microstructure and texture during thermo-mechanical processing of a two phase Al0.5CoCrFeMnNi high entropy alloy. Mater Charact 118:417–42410.1016/j.matchar.2016.06.021 ↗
27. Couzinié JP, Lilensten L, Champion Y, Dirras G, Perrière L, Guillot I (2015) On the room temperature deformation mechanisms of a TiZrHfNbTa refractory high-entropy alloy. Mater Sci Eng A 645:255–26310.1016/j.msea.2015.08.024 ↗
28. Guo NN, Wang L, Luo LS, Li XZ, Chen RR, Su YQ, Guo JJ, Fu HZ (2016) Hot deformation characteristics and dynamic recrystallization of the MoNbHfZrTi refractory high-entropy alloy. Mater Sci Eng A 651:698–70710.1016/j.msea.2015.10.113 ↗
29. Toda-Caraballo I, Rivera-Díaz-del-Castillo PEJ (2016) A criterion for the formation of high entropy alloys based on lattice distortion. Intermetallics 71:76–8710.1016/j.intermet.2015.12.011 ↗
30. Wang Z, Qiu W, Yang Y, Liu CT (2015) Atomic-size and lattice-distortion effects in newly developed high-entropy alloys with multiple principal elements. Intermetallics 64:63–6910.1016/j.intermet.2015.04.014 ↗