Oxidation behaviors of CrNb, CrNbTi, and CrNbTaTi concentrated refractory alloys

被引：30

作者：

Butler, T. M. ^{[1
]}

Senkov, O. N. ^{[1
,2
]}

Daboiku, T., I ^{[1
,2
]}

Velez, M. A. ^{[1
,2
]}

Schroader, H. E. ^{[3
]}

Ware, L. G. ^{[3
]}

Titus, M. S. ^{[3
]}

机构：

[1] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] UES Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA

[3] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

来源：

INTERMETALLICS | 2022年 / 140卷

基金：

美国国家科学基金会;

关键词：

High-entropy; Oxidation; Complex oxide; Refractory; HIGH ENTROPY ALLOYS; HIGH-TEMPERATURE OXIDATION; MECHANICAL-PROPERTIES; ADDITIONS; NIOBIUM; GENERATION; TANTALUM; KINETICS; SILICON;

D O I：

10.1016/j.intermet.2021.107374

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The 1200 degrees C oxidation behaviors of CrNb, CrNbTi and CrNbTaTi are reported. All alloys formed some combination of BCC and Laves phases. However, additions of Ti produced a unique inflection point where the microstructure inverts to a Ti-rich BCC matrix with Laves phase precipitates. Further additions of Ta to CrNbTi were found to increase the overall phase fraction of BCC phase. The oxidation kinetics for CrNb and CrNbTi were similar and nearly parabolic throughout the duration of exposure. CrNbTaTi exhibited inferior oxidation kinetics and mixed mode behavior throughout oxidation testing. All alloys formed intricate multi-phase oxide structures, consisting of a combination of both simple and complex oxides. The resulting microstructures are characterized using a variety of analytical techniques and the results are discussed relative to modeling predictions using ab initio density functional theory (DFT).

引用

页数：17

共 43 条

[1]

[Anonymous], NIST INORG CRYST STR

[2] Effect of silicon additions on the high temperature oxidation behaviour of Cr-Cr2Ta alloys [J].

Bhowmik, Ayan ;

Pang, Hon Tong ;

Edmonds, Ian M. ;

Rae, Catherine M. F. ;

Stone, Howard J. .

INTERMETALLICS, 2013, 32 :373-383

[3]

Brady M.P., 2000, MAT SCI TECHNOL COMP, P229, DOI [10.1002/9783527619306.ch15, DOI 10.1002/9783527619306.CH15]

[4] Effects of Fe additions on the mechanical properties and oxidation behavior of Cr2Ta Laves phase reinforced Cr [J].

Brady, MP ;

Liu, CT ;

Zhu, JH ;

Tortorelli, PF ;

Walker, LR .

SCRIPTA MATERIALIA, 2005, 52 (09) :815-819

[5] Oxidation behavior of Cr2N, CrNbN, and CrTaN phase mixtures formed on nitrided Cr and Laves-reinforced Cr alloys [J].

Brady, MP ;

Tortorelli, PF ;

Payzant, EA ;

Walker, LR .

OXIDATION OF METALS, 2004, 61 (5-6) :379-401

[6] Oxidation resistance and mechanical properties of Laves phase reinforced Cr in-situ composites [J].

Brady, MP ;

Zhu, JH ;

Liu, CT ;

Tortorelli, PF ;

Walker, LR .

INTERMETALLICS, 2000, 8 (9-11) :1111-1118

[7] Microstructures and mechanical properties of CrNb, CrNbTi, and CrNbTaTi concentrated refractory alloys [J].

Butler, T. M. ;

Senkov, O. N. ;

Velez, M. A. ;

Daboiku, T., I .

INTERMETALLICS, 2021, 138

[8]

Butler T.M., 2020, REFERENCE MODULE MAT

[9]

CASM, 2017, **DATA OBJECT**, DOI [10.5281/zenodo.546148, DOI 10.5281/ZENODO.546148]

[10] A review on fundamental of high entropy alloys with promising high-temperature properties [J].

Chen, Jian ;

Zhou, Xueyang ;

Wang, Weili ;

Liu, Bing ;

Lv, Yukun ;

Yang, Wei ;

Xu, Dapeng ;

Liu, Yong .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 760 :15-30

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