Phase, microstructure and mechanical properties evaluation of AlCoCrFeNi high-entropy alloy during mechanical ball milling
Source abstract
Abstract
Abstract The phase transition, microstructure evaluation and mechanical properties of AlCoCrFeNi alloy during mechanical ball milling were studied. The results show that the content of FCC phase decreases gradually with increasing milling time to 20 h. The amorphous phase can be obtained completely when extending the milling time to 84 h. The phase composition of the sintered AlCoCrFeNi alloy exhibits the trend opposite to that of the alloy powder after ball milling. An alternating BCC/FCC lamellar morphology consisting of uniformly distributed B2 particles was obtained after the hot-pressed sintering of the milled AlCoCrFeNi powder. The alloy with amorphous precursor exhibits high ultimate strength of 1947 MPa, about 74.8 % higher than that of the alloy without milling. This excellent mechanical property could be ascribed to its alternating BCC/FCC heterogeneous structure, which contains coherent interfaces with an orientation relationship of 1 1 ¯ 0 B C C / / 1 1 ¯ 0 B 2 a n d 110 B C C / / 110 B 2 , semi-coherent interfaces between B2 and FCC phases, and incoherent interfaces between FCC and BCC phases.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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. Evolutionary design of strong and stable high entropy alloys using multi-objective optimisation based on physical models, statistics and thermodynamics10.1016/j.matdes.2018.01.045 ↗
4. A critical review of high entropy alloys and related concepts10.1016/j.actamat.2016.08.081 ↗
5. Microstructures and properties of high-entropy alloys10.1016/j.pmatsci.2013.10.001 ↗
6. Microstructure characterization of AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements10.1007/s11661-005-0283-0 ↗
7. On the superior hot hardness and softening resistance of AlCoCrxFeMo0.5Ni high-entropy alloys10.1016/j.msea.2011.01.072 ↗
8. A hierarchical nanostructured Fe34Cr34Ni14Al14Co4 high-entropy alloy with good compressive mechanical properties10.1016/j.msea.2018.01.034 ↗
9. Decomposition in multicomponent AlCoCrCuFeNi high-entropy alloy10.1016/j.actamat.2010.09.023 ↗
10. L21-strengthened face-centered cubic high strength and ductility10.1016/j.msea.2020.140056 ↗
11. Enhanced mechanical properties of HfMoTaTiZr and HfMoNbTaTiZr refractory high-entropy alloys10.1016/j.intermet.2015.03.013 ↗
12. Phase separation in equiatomic AlCoCrFeNi high-entropy alloy10.1016/j.ultramic.2012.12.015 ↗
13. Synthesis and characterization of a new TiZrHfNbTaSn high-entropy alloy exhibiting superelastic behavior10.1016/j.scriptamat.2021.113824 ↗
14. The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy10.1016/j.actamat.2013.06.018 ↗
15. Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi10.1038/ncomms10143 ↗
16. Microstructure and strengthening mechanisms in an FCC structured single-phase nanocrystalline Co25Ni25Fe25Al7.5Cu17.5 high-entropy alloy10.1016/j.actamat.2016.01.050 ↗
17. Effects of annealing temperature on microstructures and tensile properties of a single FCC phase CoCuMnNi high-entropy alloy10.1016/j.jallcom.2019.152111 ↗
18. Hexagonal high-entropy alloys10.1080/21663831.2014.951493 ↗
19. A single-phase ScTiZrHf high-entropy alloy with thermally stable hexagonal close-packed structure10.1016/j.intermet.2020.106802 ↗
20. Refractory high-entropy alloys10.1016/j.intermet.2010.05.014 ↗
21. Microstructure and mechanical properties of (FeCoNi)100-x(NiAl)x eutectic multi-principal element alloys10.1016/j.jallcom.2020.158349 ↗
22. High-strength and high-ductility AlCoCrFeNi2.1 eutectic high-entropy alloy achieved via precipitation strengthening in a heterogeneous structure10.1016/j.scriptamat.2020.04.035 ↗
23. A cuboidal B2 anoprecipitation-enhanced body-centered-cubic alloy Al0.7CoCrFe2Ni with prominent tensile properties10.1016/j.scriptamat.2016.04.014 ↗
24. Evolution of microstructure, hardness, and corrosion properties of high-entropy Al0.5CoCrFeNi alloy10.1016/j.intermet.2010.10.008 ↗
25. Phases, microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloys at elevated temperatures10.1016/j.jallcom.2013.11.084 ↗
26. Phase-field simulation of coherent BCC/B2 microstructures in high entropy alloys10.1016/j.actamat.2020.07.030 ↗
27. Bulk nanostructured AlCoCrFeMnNi chemically complex alloy synthesized by laser-powder bed fusion
28. Microstructures and room temperature tensile properties of as-cast and directionally solidified AlCoCrFeNi2.1 eutectic high-entropy alloy10.1016/j.intermet.2019.106681 ↗
29. Effect of heating rate on microstructure and mechanical properties of AlCoCrFeNi high entropy alloy produced by spark plasma sintering10.1016/j.matchar.2019.05.022 ↗
30. Bimodal titanium alloys with ultrafine lamellar eutectic structure fabricated by semi-solid sintering10.1016/j.actamat.2017.04.062 ↗
31. The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron10.1007/BF02642799 ↗
32. Strategies for improving ductility of ordered intermetallics10.1016/j.pnsc.2016.01.014 ↗