High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys: Effect of Alloy Composition

被引：174

作者：

Gorr, Bronislava ^{[1
]}

Mueller, Franz ^{[1
]}

Azim, Maria ^{[1
]}

Christ, Hans-Juergen ^{[1
]}

Mueller, Torsten ^{[2
]}

Chen, Hans ^{[3
]}

Kauffmann, Alexander ^{[3
]}

Heilmaier, Martin ^{[3
]}

机构：

[1] Univ Siegen, Inst Werkstofftech, Paul Bonatz Str 9-11, D-57068 Siegen, Germany

[2] Inst Bau & Werkstoffchem, Paul Bonatz Str 9-11, D-57068 Siegen, Germany

[3] Karlsruhe Inst Technol, Inst Angewandte Mat Werkstoffkunde, Engelbert Arnold Str 4, D-76131 Karlsruhe, Germany

来源：

OXIDATION OF METALS | 2017年 / 88卷 / 3-4期

关键词：

High-entropy alloys; Refractory metals; Oxidation kinetics; Oxide scale morphology; Oxide evaporation; PHASE-EQUILIBRIA; MICROSTRUCTURE; SOLUBILITY;

D O I：

10.1007/s11085-016-9696-y

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The high-temperature oxidation behavior of a new family of refractory high-entropy alloys (HEAs) with compositions of W-Mo-Cr-Ti-Al, Nb-Mo-Cr-Ti-Al and Ta-Mo-Cr-Ti-Al was studied at 1000 and 1100 A degrees C. Based on these equimolar starting compositions, the main incentive of this study was to select the most promising alloy system whose properties may then be successively improved. Despite the high amount of refractory elements, Ta-Mo-Cr-Ti-Al showed good oxidation resistance at 1000 and 1100 A degrees C. Moderate values of mass gain and complex oxidation kinetics were observed for the W- and Nb-containing HEAs. These alloys formed inhomogeneous oxide scales possessing regions with thick and porous layers as well as areas revealing quite thin oxide scales due to the formation of discontinuous Cr- and Al-rich scales. The most promising behavior was shown by the alloy Ta-Mo-Cr-Ti-Al which followed the parabolic rate law for oxide growth due to the formation of a thin and compact Al-rich layer.

引用

页码：339 / 349

页数：11

共 30 条

[1]

Azim M., 2015, J OF MINERALS, V57, P2621

[2]

Bacon F. E., 1963, COLUMBIUM TANTALUM

[3] The balance of mechanical and environmental properties of a multielement niobium-niobium silicide-based in situ composite [J].

Bewlay, BP ;

Jackson, MR ;

Lipsitt, HA .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (12) :3801-3808

[4]

Bondioli F, 2000, J AM CERAM SOC, V83, P2036, DOI 10.1111/j.1151-2916.2000.tb01508.x

[5] Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Al [J].

Chen, H. ;

Kauffmann, A. ;

Gorr, B. ;

Schliephake, D. ;

Seemueller, C. ;

Wagner, J. N. ;

Christ, H. -J. ;

Heilmaier, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 661 :206-215

[6]

Elliott R.P, 1960, Trans. Am. Soc. Met., V52, P900

[7]

Geyer N. M., PROTECTION REFRACTOR

[8] OXIDATION OF NI-CR-AL ALLOYS BETWEEN 1000 DEGREES AND 1200 DEGREES C [J].

GIGGINS, CS ;

PETTIT, FS .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1971, 118 (11) :1782-&

[9] High temperature oxidation behavior of an equimolar refractory metal-based alloy 20Nb-20Mo-20Cr-20Ti-20Al with and without Si addition [J].

Gorr, B. ;

Mueller, F. ;

Christ, H. -J. ;

Mueller, T. ;

Chen, H. ;

Kauffmann, A. ;

Heilmaier, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 688 :468-477

[10] Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys [J].

Gorr, B. ;

Azim, M. ;

Christ, H. -J. ;

Mueller, T. ;

Schliephake, D. ;

Heilmaier, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 624 :270-278

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