High-temperature oxidation behaviors and mechanisms in newly designed L12-strengthened high-entropy alloys

Jinxiong Hou; Yi Tan; Shaofei Liu; Jianyang Zhang; Weicheng Xiao; Haojie Kong; Qian Li; Boxuan Cao; Junhua Luan; Yilu Zhao; Jijung Kai; Tao Yang

doi:10.1016/j.corsci.2022.110665

High-temperature oxidation behaviors and mechanisms in newly designed L1₂-strengthened high-entropy alloys

Jinxiong Hou, Yi Tan, Shaofei Liu, Jianyang Zhang, Weicheng Xiao, Haojie Kong, Qian Li, Boxuan Cao, Junhua Luan, Yilu Zhao, Jijung Kai, Tao Yang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

Abstract

The oxidation behaviors of a newly-designed L1₂-strengthened multi-component Ni-Co-Fe-Cr-Al-Ti-Nb system were studied at 800 ℃, where the synergistic alloying effects of Ti, Nb, and Cr on the oxidation resistance were uncovered. The findings show that the doping of Ti facilitates the outward diffusion of metal cations and inward diffusion of oxygen ions through the Cr₂O₃ and Al₂O₃ scales, deteriorating the oxidation resistance. By substituting the Ti with Nb, a continuous and dense Al₂O₃ scale was potentially promoted benefiting from the “unlocked” Al atoms from the L1₂ particles. The increased additions of Cr and Nb contribute to the improved oxidation resistance.

Original language	English
Article number	110665
Journal	Corrosion Science
Volume	208
Online published	14 Sept 2022
DOIs	https://doi.org/10.1016/j.corsci.2022.110665
Publication status	Published - Nov 2022

Funding

The authors from the City University of Hong Kong greatly acknowledge the financial supports from the National Natural Science Foundation of China (No. 52101151), the Hong Kong Research Grant Council (RGC) (Grant No. CityU 21205621 and C1017–21G), the Guangdong Basic and Applied Basic Research Foundation (No. 2020A1515110647), and the Shenzhen Science and Technology Program (Grant No. SGDX20210823104002016). Y.L. Zhao from the Harbin Institute of Technology (Shenzhen) thanks to the financial support from the National Natural Science Foundation of China (No. 52101135) and the Shenzhen Science and Technology Program (Grant No. RCBS20210609103202012). All the authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Research Keywords

Coherent precipitation strengthening
High-entropy alloys
Mechanical properties
Multi-component intermetallic
Oxidation resistance

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@article{44a9411659e9408d924e47426b427145,

title = "High-temperature oxidation behaviors and mechanisms in newly designed L12-strengthened high-entropy alloys",

abstract = "The oxidation behaviors of a newly-designed L12-strengthened multi-component Ni-Co-Fe-Cr-Al-Ti-Nb system were studied at 800 ℃, where the synergistic alloying effects of Ti, Nb, and Cr on the oxidation resistance were uncovered. The findings show that the doping of Ti facilitates the outward diffusion of metal cations and inward diffusion of oxygen ions through the Cr2O3 and Al2O3 scales, deteriorating the oxidation resistance. By substituting the Ti with Nb, a continuous and dense Al2O3 scale was potentially promoted benefiting from the “unlocked” Al atoms from the L12 particles. The increased additions of Cr and Nb contribute to the improved oxidation resistance.",

keywords = "Coherent precipitation strengthening, High-entropy alloys, Mechanical properties, Multi-component intermetallic, Oxidation resistance",

author = "Jinxiong Hou and Yi Tan and Shaofei Liu and Jianyang Zhang and Weicheng Xiao and Haojie Kong and Qian Li and Boxuan Cao and Junhua Luan and Yilu Zhao and Jijung Kai and Tao Yang",

year = "2022",

month = nov,

doi = "10.1016/j.corsci.2022.110665",

language = "English",

volume = "208",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - High-temperature oxidation behaviors and mechanisms in newly designed L12-strengthened high-entropy alloys

AU - Hou, Jinxiong

AU - Tan, Yi

AU - Liu, Shaofei

AU - Zhang, Jianyang

AU - Xiao, Weicheng

AU - Kong, Haojie

AU - Li, Qian

AU - Cao, Boxuan

AU - Luan, Junhua

AU - Zhao, Yilu

AU - Kai, Jijung

AU - Yang, Tao

PY - 2022/11

Y1 - 2022/11

N2 - The oxidation behaviors of a newly-designed L12-strengthened multi-component Ni-Co-Fe-Cr-Al-Ti-Nb system were studied at 800 ℃, where the synergistic alloying effects of Ti, Nb, and Cr on the oxidation resistance were uncovered. The findings show that the doping of Ti facilitates the outward diffusion of metal cations and inward diffusion of oxygen ions through the Cr2O3 and Al2O3 scales, deteriorating the oxidation resistance. By substituting the Ti with Nb, a continuous and dense Al2O3 scale was potentially promoted benefiting from the “unlocked” Al atoms from the L12 particles. The increased additions of Cr and Nb contribute to the improved oxidation resistance.

AB - The oxidation behaviors of a newly-designed L12-strengthened multi-component Ni-Co-Fe-Cr-Al-Ti-Nb system were studied at 800 ℃, where the synergistic alloying effects of Ti, Nb, and Cr on the oxidation resistance were uncovered. The findings show that the doping of Ti facilitates the outward diffusion of metal cations and inward diffusion of oxygen ions through the Cr2O3 and Al2O3 scales, deteriorating the oxidation resistance. By substituting the Ti with Nb, a continuous and dense Al2O3 scale was potentially promoted benefiting from the “unlocked” Al atoms from the L12 particles. The increased additions of Cr and Nb contribute to the improved oxidation resistance.

KW - Coherent precipitation strengthening

KW - High-entropy alloys

KW - Mechanical properties

KW - Multi-component intermetallic

KW - Oxidation resistance

UR - http://www.scopus.com/inward/record.url?scp=85138060825&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85138060825&origin=recordpage

U2 - 10.1016/j.corsci.2022.110665

DO - 10.1016/j.corsci.2022.110665

M3 - RGC 21 - Publication in refereed journal

SN - 0010-938X

VL - 208

JO - Corrosion Science

JF - Corrosion Science

M1 - 110665

ER -

High-temperature oxidation behaviors and mechanisms in newly designed L1₂-strengthened high-entropy alloys

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CRF: Designing Self-healing High Entropy Alloys for Advanced Nuclear Applications

ECS: Grain-Boundary Toughening Mechanisms and Thermal Resistance of Novel Nanoparticles-Strengthened High-Entropy Alloys with Hetero-Lamellar Grain Structures at Intermediate Temperatures

Cite this

High-temperature oxidation behaviors and mechanisms in newly designed L12-strengthened high-entropy alloys

Abstract

Funding

Research Keywords

Access Output

Other Access Options

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CRF: Designing Self-healing High Entropy Alloys for Advanced Nuclear Applications

ECS: Grain-Boundary Toughening Mechanisms and Thermal Resistance of Novel Nanoparticles-Strengthened High-Entropy Alloys with Hetero-Lamellar Grain Structures at Intermediate Temperatures

Cite this

High-temperature oxidation behaviors and mechanisms in newly designed L1₂-strengthened high-entropy alloys