Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition
Само за регистроване кориснике
2022
Аутори
Zhao, SenlinXin, Dongqun
Chen, Xizhang
Stašić, Jelena
Trtica, Milan
Siddiquee, Arshad Noor
Mohan, Sanjay
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
AlCoxCrFeNi (x = 2.2, 2.8) high entropy alloys (HEAs) were successfully prepared by multi-layer and multi-channel laser melting deposition (LMD). The tensile properties of the LMD-fabricated AlCoxCrFeNi HEAs were investigated. The phase evolution of these alloys was examined by X-ray diffraction and compared with existing models. The microstructure of the alloys was characterized using scanning electron microscopy and electron backscatter diffraction. It is found that Co element can promote the phase transformation from BCC phase to FCC phase in the as-deposited AlCoxCrFeNi HEAs, and the volume fraction of FCC phase increases from 51.4% to 74.6% as the Co content increases from 36.2 at% to 40.8 at%. With the increase of Co content, the grain size of BCC phase in the alloys decreases and a larger amount of fine needle-like BCC phase appears in the FCC matrix. Tensile testing shows that higher Co content in the deposited AlCoxCrFeNi alloy can enhance its plasticity without significantly ...compromising its ultimate strength. As the Co content increases, the fracture strain increases from 5.9% to 15.4%, while the yield strength reduces from 450 MPa to 360 MPa and the ultimate tensile strength increases from 734 MPa to 739 MPa. The variations in tensile properties of the AlCoxCrFeNi alloy result from phase structure changes and microstructure evolution. Through this research, it is demonstrated that enhancement of the tensile properties of the LMD-fabricated AlCoCrFeNi HEAs can be realized by increasing the content of Co element.
Кључне речи:
High entropy alloy / Laser melting deposition / Microstructures / Tensile propertiesИзвор:
Journal of Alloys and Compounds, 2022, 917, 165403-Финансирање / пројекти:
- National Natural Science Foundation of China [Grant No. 51975419]
- Key Research and Development Project Zhejiang Province [2021C04022]
- Serbia-China Bilateral Science and Technology Cooperation [Project No.17, "Advanced Technologies Based on Pulsed Lasers for Modification/Processing and Synthesis of Selected Metal Materials"]
DOI: 10.1016/j.jallcom.2022.165403
ISSN: 0925-8388
WoS: 00080853790000
Scopus: 2-s2.0-85131085421
Колекције
Институција/група
VinčaTY - JOUR AU - Zhao, Senlin AU - Xin, Dongqun AU - Chen, Xizhang AU - Stašić, Jelena AU - Trtica, Milan AU - Siddiquee, Arshad Noor AU - Mohan, Sanjay PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10292 AB - AlCoxCrFeNi (x = 2.2, 2.8) high entropy alloys (HEAs) were successfully prepared by multi-layer and multi-channel laser melting deposition (LMD). The tensile properties of the LMD-fabricated AlCoxCrFeNi HEAs were investigated. The phase evolution of these alloys was examined by X-ray diffraction and compared with existing models. The microstructure of the alloys was characterized using scanning electron microscopy and electron backscatter diffraction. It is found that Co element can promote the phase transformation from BCC phase to FCC phase in the as-deposited AlCoxCrFeNi HEAs, and the volume fraction of FCC phase increases from 51.4% to 74.6% as the Co content increases from 36.2 at% to 40.8 at%. With the increase of Co content, the grain size of BCC phase in the alloys decreases and a larger amount of fine needle-like BCC phase appears in the FCC matrix. Tensile testing shows that higher Co content in the deposited AlCoxCrFeNi alloy can enhance its plasticity without significantly compromising its ultimate strength. As the Co content increases, the fracture strain increases from 5.9% to 15.4%, while the yield strength reduces from 450 MPa to 360 MPa and the ultimate tensile strength increases from 734 MPa to 739 MPa. The variations in tensile properties of the AlCoxCrFeNi alloy result from phase structure changes and microstructure evolution. Through this research, it is demonstrated that enhancement of the tensile properties of the LMD-fabricated AlCoCrFeNi HEAs can be realized by increasing the content of Co element. T2 - Journal of Alloys and Compounds T1 - Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition VL - 917 SP - 165403 DO - 10.1016/j.jallcom.2022.165403 ER -
@article{ author = "Zhao, Senlin and Xin, Dongqun and Chen, Xizhang and Stašić, Jelena and Trtica, Milan and Siddiquee, Arshad Noor and Mohan, Sanjay", year = "2022", abstract = "AlCoxCrFeNi (x = 2.2, 2.8) high entropy alloys (HEAs) were successfully prepared by multi-layer and multi-channel laser melting deposition (LMD). The tensile properties of the LMD-fabricated AlCoxCrFeNi HEAs were investigated. The phase evolution of these alloys was examined by X-ray diffraction and compared with existing models. The microstructure of the alloys was characterized using scanning electron microscopy and electron backscatter diffraction. It is found that Co element can promote the phase transformation from BCC phase to FCC phase in the as-deposited AlCoxCrFeNi HEAs, and the volume fraction of FCC phase increases from 51.4% to 74.6% as the Co content increases from 36.2 at% to 40.8 at%. With the increase of Co content, the grain size of BCC phase in the alloys decreases and a larger amount of fine needle-like BCC phase appears in the FCC matrix. Tensile testing shows that higher Co content in the deposited AlCoxCrFeNi alloy can enhance its plasticity without significantly compromising its ultimate strength. As the Co content increases, the fracture strain increases from 5.9% to 15.4%, while the yield strength reduces from 450 MPa to 360 MPa and the ultimate tensile strength increases from 734 MPa to 739 MPa. The variations in tensile properties of the AlCoxCrFeNi alloy result from phase structure changes and microstructure evolution. Through this research, it is demonstrated that enhancement of the tensile properties of the LMD-fabricated AlCoCrFeNi HEAs can be realized by increasing the content of Co element.", journal = "Journal of Alloys and Compounds", title = "Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition", volume = "917", pages = "165403", doi = "10.1016/j.jallcom.2022.165403" }
Zhao, S., Xin, D., Chen, X., Stašić, J., Trtica, M., Siddiquee, A. N.,& Mohan, S.. (2022). Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition. in Journal of Alloys and Compounds, 917, 165403. https://doi.org/10.1016/j.jallcom.2022.165403
Zhao S, Xin D, Chen X, Stašić J, Trtica M, Siddiquee AN, Mohan S. Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition. in Journal of Alloys and Compounds. 2022;917:165403. doi:10.1016/j.jallcom.2022.165403 .
Zhao, Senlin, Xin, Dongqun, Chen, Xizhang, Stašić, Jelena, Trtica, Milan, Siddiquee, Arshad Noor, Mohan, Sanjay, "Microstructure and enhanced tensile properties of AlCoxCrFeNi high entropy alloys with high Co content fabricated by laser melting deposition" in Journal of Alloys and Compounds, 917 (2022):165403, https://doi.org/10.1016/j.jallcom.2022.165403 . .