Y-Hf co-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation and spallation resistance under thermal cycling conditions at 1100 °C and 1200 °C

被引：33

作者：

Lu, Jie ^{[1
]}

Zhang, Han ^{[2
]}

Li, Ling ^{[1
]}

Chen, Ying ^{[2
]}

Liu, Xuanzhen ^{[1
]}

Zhao, Xiaofeng ^{[1
]}

Guo, Fangwei ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Preci, Shanghai 200240, Peoples R China

[2] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

来源：

CORROSION SCIENCE | 2021年 / 187卷

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

High-entropy alloy; Eutectic structure; Oxidation; High-temperature; Thermal cycling; BOND COATS; DIFFUSION; ADDITIONS; FAILURE; SEGREGATION; MECHANISMS; DUCTILITY; STRENGTH; BEHAVIOR; YTTRIUM;

D O I：

10.1016/j.corsci.2021.109515

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation behavior of AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) with Y-Hf co-doping under thermal cycling conditions at 1100 degrees C and 1200 degrees C is studied in comparison to the conventional NiCoCrAlYHf alloy (CNA). The oxidation rates of EHEA at two temperatures are much lower than those of CNA. Additionally, the resistance to Al2O3 scale spallation for the EHEA is much superior to that for the CNA. It is well demonstrated that increasing the interfacial toughness is more beneficial to improve the scale spallation resistance in comparison to the decrease in oxidation rate.

引用

页数：9

共 48 条

[1] THE OXIDATION BEHAVIOR OF NIAL .1. PHASE-TRANSFORMATIONS IN THE ALUMINA SCALE DURING OXIDATION OF NIAL AND NIAL-CR ALLOYS [J].

BRUMM, MW ;

GRABKE, HJ .

CORROSION SCIENCE, 1992, 33 (11) :1677-&

[2] Microstructural development in equiatomic multicomponent alloys [J].

Cantor, B ;

Chang, ITH ;

Knight, P ;

Vincent, AJB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 :213-218

[3] The influence of the reactive element yttrium on the stress in alumina scales formed by oxidation [J].

Christensen, RJ ;

Tolpygo, VK ;

Clarke, DR .

ACTA MATERIALIA, 1997, 45 (04) :1761-1766

[4] Brittle-to-ductile transition in polycrystalline NiAl [J].

Ebrahimi, F ;

Hoyle, TG .

ACTA MATERIALIA, 1997, 45 (10) :4193-4204

[5] Mechanisms controlling the durability of thermal barrier coatings [J].

Evans, AG ;

Mumm, DR ;

Hutchinson, JW ;

Meier, GH ;

Pettit, FS .

PROGRESS IN MATERIALS SCIENCE, 2001, 46 (05) :505-553

[6] Diffusion cells and chemical failure of MCrAlY bond coats in thermal-barrier coating systems [J].

Evans, HE ;

Taylor, MP .

OXIDATION OF METALS, 2001, 55 (1-2) :17-34

[7]

Gao M. C., 2016, HIGH ENTROPY ALLOYS, DOI DOI 10.1007/978-3-319-27013-5_6

[8] Microstructural origins of high strength and high ductility in an AlCoCrFeNi2.1 eutectic high-entropy alloy [J].

Gao, Xuzhou ;

Lu, Yiping ;

Zhang, Bo ;

Liang, Ningning ;

Wu, Guanzhong ;

Sha, Gang ;

Liu, Jizi ;

Zhao, Yonghao .

ACTA MATERIALIA, 2017, 141 :59-66

[9] Reaction morphologies developed by nickel aluminides in type II hot corrosion conditions: The effect of chromium [J].

Gheno, Thomas ;

Azar, Maryam Zahiri ;

Heuer, Arthur H. ;

Gleeson, Brian .

CORROSION SCIENCE, 2015, 101 :32-46

[10] Y-rich oxide distribution in plasma sprayed MCrAlY-coatings studied by SEM with a cathodoluminescence detector and Raman spectroscopy [J].

Gil, A. ;

Naumenko, D. ;

Vassen, R. ;

Toscano, J. ;

Subanovic, M. ;

Singheiser, L. ;

Quadakkers, W. J. .

SURFACE & COATINGS TECHNOLOGY, 2009, 204 (04) :531-538

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