Improving oxidation resistance of TaMoZrTiAl refractory high entropy alloys via Nb and Si alloying

被引：22

作者：

Guo, Yueling ^{[1
]}

Peng, Jian ^{[2
,3
]}

Peng, Siyi ^{[1
]}

An, Fengchao ^{[4
]}

Lu, Wenjun ^{[2
,4
]}

Li, Zhiming ^{[5
]}

机构：

[1] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

[2] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat & Proc, 122 Luoshi Rd, Wuhan 430070, Peoples R China

[4] Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

[5] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 223卷

关键词：

Refractory high entropy alloy; High temperature oxidation; Nb alloying; Si alloying; Oxide scale; MECHANICAL-PROPERTIES; MICROSTRUCTURE; BEHAVIOR; AL; ALUMINUM; MO;

D O I：

10.1016/j.corsci.2023.111455

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here, we investigate the interplay effects of Si and Nb alloying on the oxidation behaviors of the refractory high entropy alloys (RHEAs) at 1000 & DEG;C. The alloying of Nb and Si promotes the formation of dendritic microstructures, suppresses the transition from parabolic to linear oxidation kinetics and significantly improves the oxidation resistance. Severe cracking of oxide scales is also reduced via Nb and Si alloying. According to the scanning transmission electron microscopy analysis, ZrO2 and TiO2 are initially formed during oxidation, and oxidation proceeds with the inward diffusion of oxygen, preferentially through the interdendritic region and BCC grain boundaries.

引用

页数：11

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