Effect of cryo-deformation on structure and properties of CoCrFeNiMn high-entropy alloy
Source abstract
Abstract
Abstract Microstructure evolution in high-entropy alloy CoCrFeNiMn during plane-strain multipass rolling to a thickness strain of 80% at 293 and 77 K was studied. Deformation at both temperatures was found to be accompanied by twinning. At 77 K, twinning was more extensive in terms of the fraction of twinned grains and the length of the twinning stage thereby providing faster kinetics of the microstructure evolution. Micro-shear bands formed in the microstructure of the alloy at the late stages of rolling (at e ≈ 80% at 293 K and e ≈ 40% at 77 K). The ultimate tensile strength of specimens rolled at 77 K or 293 K was found to be 1500 or 1200 MPa, respectively while the strength in the initial homogenized condition was 440 MPa. The contribution of various mechanisms to the hardening of the alloy following rolling at 77 K and 293 K was analyzed quantitatively.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes10.1002/adem.200300567 ↗
2. Microstructural development in equiatomic multicomponent alloys10.1016/j.msea.2003.10.257 ↗
3. Microstructures and properties of high-entropy alloys10.1016/j.pmatsci.2013.10.001 ↗
4. Murty · 2014
5. The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy10.1016/j.actamat.2013.06.018 ↗
6. Tensile properties of an AlCrCuNiFeCo high-entropy alloy in as-cast and wrought conditions10.1016/j.msea.2011.11.045 ↗
7. Phase composition and superplastic behavior of a wrought AlCoCrCuFeNi high-entropy alloy10.1007/s11837-013-0754-5 ↗
8. Relative effects of enthalpy and entropy on the phase stability of equiatomic high-entropy alloys10.1016/j.actamat.2013.01.042 ↗
9. Sluggish diffusion in Co–Cr–Fe–Mn–Ni high-entropy alloys10.1016/j.actamat.2013.04.058 ↗
10. Microstructure and texture evolution during annealing of equiatomic CoCrFeMnNi high-entropy alloy10.1016/j.jallcom.2013.10.237 ↗
11. Grain growth and the Hall–Petch relationship in a high-entropy FeCrNiCoMn alloy10.1016/j.scriptamat.2012.12.002 ↗
12. Microstructural evolution after thermomechanical processing in an equiatomic, single-phase CoCrFeMnNi high-entropy alloy with special focus on twin boundaries10.1016/j.intermet.2014.05.014 ↗
13. Recovery, recrystallization, grain growth and phase stability of a family of FCC-structured multi-component equiatomic solid solution alloys10.1016/j.intermet.2013.10.024 ↗
14. Tensile properties of high- and medium-entropy alloys10.1016/j.intermet.2013.03.018 ↗
15. Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system10.1016/j.actamat.2013.09.037 ↗
16. Incipient plasticity and dislocation nucleation of FeCoCrNiMn high-entropy alloy10.1016/j.actamat.2013.01.059 ↗
17. Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures10.1016/j.actamat.2014.08.026 ↗
18. Steady state flow of the FeCoNiCrMn high entropy alloy at elevated temperatures10.1016/j.intermet.2014.06.015 ↗
19. A novel, single phase, non-equiatomic FeMnNiCoCr high-entropy alloy with exceptional phase stability and tensile ductility10.1016/j.scriptamat.2013.09.030 ↗
20. Composition dependence of phase stability, deformation mechanisms, and mechanical properties of the CoCrFeMnNi high-entropy alloy system10.1007/s11837-014-1133-6 ↗
21. A fracture-resistant high-entropy alloy for cryogenic applications10.1126/science.1254581 ↗
22. Mechanical properties and stacking fault energies of NiFeCrCoMn high-entropy alloy10.1007/s11837-013-0771-4 ↗
23. Formation of nanostructures in commercial-purity titanium via cryo-rolling10.1016/j.actamat.2012.10.026 ↗
24. Twinning induced nanostructure formation during cryo-deformation10.1088/1757-899X/63/1/012157 ↗
25. Twinning-induced formation of nanostructure in commercial-purity titanium10.4028/www.scientific.net/MSF.783-786.2732 ↗
26. Deformation twinning10.1016/0079-6425(94)00007-7 ↗
27. Changes in misorientations of grain boundaries in titanium during deformation10.1016/j.matchar.2010.04.005 ↗
28. Effect of Mn and V on structure and mechanical properties of high-entropy alloys based on CoCrFeNi system10.1016/j.jallcom.2013.12.210 ↗
29. Williams · 1996 · 361
30. Annealing twin development during recrystallization and grain growth in pure nickel10.1016/j.msea.2014.01.018 ↗
31. High manganese austenitic twinning induced plasticity steels: a review of the microstructure properties relationships10.1016/j.cossms.2011.04.002 ↗
32. Role of deformation twinning on strain hardening in cubic and hexagonal polycrystalline metals10.1002/adem.200300320 ↗
33. Characterization and prediction of flow behavior in high-manganese twinning induced plasticity steels: part I. Mechanism maps and work-hardening behavior10.1007/s11661-011-0993-4 ↗
34. Hall · 1984
35. Frost · 1982
36. Microstructure evolution and strengthening mechanisms of Fe-23Mn-0.3C-1.5Al TWIP steel during cold rolling10.1016/j.msea.2014.08.051 ↗