Effects of Solid Solution and Cryogenic Deformation on AlCoCrFeNi-HEAp/2219Al Composites

YANG Yilong; ZHANG Yun

doi:10.3969/j.issn.1674-6457.2025.07.019

PDF(10107 KB)

Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (7) : 175-182. DOI: 10.3969/j.issn.1674-6457.2025.07.019

Composites Forming

Effects of Solid Solution and Cryogenic Deformation on AlCoCrFeNi-HEAp/2219Al Composites

YANG Yilong¹, ZHANG Yun^2,*

Author information +

History +

Abstract

The work aims to address the issue of coarse Al-Cu crystalline phases and mismatched strength and toughness in AlCoCrFeNi HEAp/2219Al composites. Three deformation processes of high temperature rolling, cryorolling, and solution treatment+cryorolling were used to study the microstructure and mechanical properties of AlCoCrFeNi-HEAp/2219Al composites. It was found that the composites after the high temperature rolling process had the lowest Al-Cu crystalline phase content, only 0.68%. The large amount of broken crystalline phases presented in the matrix after cryorolling and solution treatment+cryorolling further promoted the diffusion of the Cu element. The composite had the highest ultimate tensile strength (361.63 MPa) after high temperature rolling at 90% thickness reduction. Under the same deformation conditions, the composites obtained the highest strength increment (56.95 MPa) after solution treatment+cryorolling with almost no loss of fracture elongation. In conclusion, a large number of dislocations are generated in the composites, with the highest dislocation density observed in the solution treatment+cryorolling process after three deformation processes. High density dislocations accumulate around the Al-Cu phase, leading to the fragmentation of the primary Al-Cu phase. The combination of solution treatment and cryorolling caused significant element diffusion in the crystalline phase, resulting in a decrease in the Al-Cu content in the matrix. The high-density dislocations accumulated during cryorolling also break and disperse along the grain boundaries of the elongated crystalline phase. The ultimate tensile strength and yield strength of the composites increase with the increase of deformation, but the fracture elongation shows a gradual decreasing trend. Through comparative research, the solution treatment+cryorolling forming process can effectively improve the mechanical properties of composites.

Key words

composites / solution / rolling / microstructure / mechanical properties

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

YANG Yilong, ZHANG Yun. Effects of Solid Solution and Cryogenic Deformation on AlCoCrFeNi-HEAp/2219Al Composites[J]. Journal of Netshape Forming Engineering. 2025, 17(7): 175-182 https://doi.org/10.3969/j.issn.1674-6457.2025.07.019

References

[1] ZAMANI M R, MIRZADEH H, MALEKAN M, et al.Grain Growth in High-Entropy Alloys (HEAs): A Review[J]. High Entropy Alloys & Materials, 2023, 1(1): 25-59.
[2] HAN P, LIN J, WANG W, et al.Friction Stir Processing of Cold-Sprayed High-Entropy Alloy Particles Reinforced Aluminum Matrix Composites: Corrosion and Wear Properties[J]. Metals and Materials International, 2023, 29(3): 845-860.
[3] LUO K G, LIU S L, XIONG H Q, et al.Mechanical Properties and Strengthening Mechanism of Aluminum Matrix Composites Reinforced by High-Entropy Alloy Particles[J]. Metals and Materials International, 2022, 28(11): 2811-2821.
[4] XIONG W, GUO A X Y, ZHAN S, et al. Refractory High-Entropy Alloys: A Focused Review of Preparation Methods and Properties[J]. Journal of Materials Science & Technology, 2023, 142: 196-215.
[5] 孟爽, 国栋, 赵冬凤, 等. CoCrFeNi系高熵合金研究进展[J]. 精密成形工程, 2023, 15(8): 156-168.
MENG S, GUO D, ZHAO D F, et al.Research Progress of CoCrFeNi High Entropy Alloy[J]. Journal of Netshape Forming Engineering, 2023, 15(8): 156-168.
[6] LIU Y Z, CHEN J, LI Z, et al.Formation of Transition Layer and Its Effect on Mechanical Properties of AlCoCrFeNi High-Entropy Alloy/Al Composites[J]. Journal of Alloys and Compounds, 2019, 780: 558-564.
[7] WANG E H, LV L S, KANG F W, et al.Microstructure and Tensile Properties of High-Entropy Alloy Al_0.5CoCrFeNi Particles Reinforced Ti/Al Laminated Composite[J]. Composite Interfaces, 2024, 31(2): 165-180.
[8] LI Q L, ZHAO S, BAO X P, et al.Effects of AlCoCrFeNiTi High-Entropy Alloy on Microstructure and Mechanical Properties of Pure Aluminum[J]. Journal of Materials Science & Technology, 2020, 94(17): 1-11.
[9] LI Q L, ZHANG Y S, ZHANG X Y, et al.Microstructure Evolution and Nano-Phases Strengthening of Al- 5%Cu Alloy by Adding Trace AlSiTiCrNiCu High Entropy Alloy[J]. Materials Characterization, 2021, 175: 111100.
[10] 张昀, 喻海良, 李晓谦. 一种2219铝基高熵合金复合材料的超声辅助制备方法: 中国, 202011583695. 2X[P].2021-01-16.
ZHANG Y, YU H L, LI X Q. An Ultrasonic-assisted Preparation Method for2219 Aluminum-based High- entropy Alloy Composites: China, 202011583695. 2X[P]. 2021-01-16.
[11] ZHANG Y, LI R Q, CHEN P H, et al.Microstructural Evolution of Al₂Cu Phase and Mechanical Properties of the Large-Scale Al Alloy Components under Different Consecutive Manufacturing Processes[J]. Journal of Alloys and Compounds, 2019, 808: 151634.
[12] LU Y L, WANG J, LI X C, et al.Effects of Pre-Deformation on the Microstructures and Corrosion Behavior of 2219 Aluminum Alloys[J]. Materials Science and Engineering: A, 2018, 723: 204-211.
[13] GUO W F, CHEN D, YI Y P, et al.Effects of the Rolling Temperature on the Microstructure Uniformities and Mechanical Properties of Large 2219 Al-Cu Alloy Rings[J]. Metals and Materials International, 2024, 30(5): 1387-1406.
[14] BIZANA G B, BARRALES-MORA L A. Kinetics of Grain Boundary Migration in Nanosized Al Polycrystals[J]. Acta Materialia, 2023, 260: 119261.
[15] NAYAN N, SINGH G, BAUNTHIYAL D, et al.Mechanical Properties of Cryo-Rolled Aluminium Alloy AA2219 at 300, 77 and 20 K[J]. Materials Science and Engineering: A, 2023, 881: 145399.
[16] 喻海良. 深冷轧制制备高性能金属材料研究进展[J]. 中国机械工程, 2020, 31(1): 89-99.
YU H L.Progresses in Fabrication of High-Performance Metals by Using Cryorolling[J]. China Mechanical Engineering, 2020, 31(1): 89-99.
[17] LI Z X, SHI Y L, XU L P, et al.Effect of Natural Aging on Cold Forming Performance of 2219 Aluminum Alloy[J]. Materials, 2023, 16(9): 3536.
[18] CAI J X, ZHANG L, LU G X, et al.Evolution of Al₂Cu Secondary Phase and Precipitation Strengthening of 2219 Al Alloy with Ultrasonic Melt Treatment, Hot Rolling, and Solution Aging[J]. Advanced Engineering Materials, 2024, 26(21): 2400963.
[19] LI J, ZHOU J Z, XU S Q, et al.Effects of Cryogenic Treatment on Mechanical Properties and Micro-Structures of IN718 Super-Alloy[J]. Materials Science and Engineering: A, 2017, 707: 612-619.
[20] LUO K G, XIONG H Q, ZHANG Y, et al.AA1050 Metal Matrix Composites Reinforced by High-Entropy Alloy Particles via Stir Casting and Subsequent Rolling[J]. Journal of Alloys and Compounds, 2022, 893: 162370.
[21] HE H L, YI Y P, HUANG S Q, et al.Effects of Thermomechanical Treatment on Grain Refinement, Second-Phase Particle Dissolution, and Mechanical Properties of 2219 Al Alloy[J]. Journal of Materials Processing Technology, 2020, 278: 116506.
[22] WANG Z L, YANG X R, ZHANG B, et al.Tailoring Microstructure to Enhance Strength and Plasticity in TA4 Pure Ti via Combined Equal Channel Angular Pressing and Cold Rolling[J]. Materials Science and Engineering: A, 2025, 926: 147917.
[23] SUN X L, JIE J C, WANG P F, et al.Effects of Co and Si Additions and Cryogenic Rolling on Structure and Properties of Cu-Cr Alloys[J]. Materials Science and Engineering: A, 2019, 740: 165-173.
[24] ZHOU J, LIAO H C, CHEN H M, et al.Effect of Cold Rolling on Microstructure and Mechanical Behavior of Fe₃₅Ni₃₅Cr₂₀Mn₁₀ High-Entropy Alloy[J]. Materials Characterization, 2024, 218: 114503.
[25] WANG H Y, YANG Z Q, ZHANG Q B, et al.Severe Plastic Cold Rolling Effects in Nickel-Vanadium Alloy: Microstructure, Texture Evolution and Mechanical Properties[J]. Journal of Materials Research and Technology, 2024, 33: 1715-1729.
[26] MEHRANPOUR M S, SOHRABI M J, KALHOR A, et al.Exceptional Strength-Ductility Synergy in the Novel Metastable FeCoCrNiVSi High-Entropy Alloys via Tuning the Grain Size Dependency of the Transformation-Induced Plasticity Effect[J]. International Journal of Plasticity, 2024, 182: 104115.

Funding

; Fund：Henan Province’s Science and Technology Research and Development (232102230010); Hunan Provincial Natural Science Foundation (2024JJ5153); Excellent Youth Project of Hunan Provincial Department of Education (23B0499)