Unraveling the origin of the excellent high-temperature oxidation resistance of an AlCrFeNiTi complex concentrated alloy

被引：10

作者：

Ju, Jiang ^{[1
]}

Shen, Zhao ^{[2
]}

Li, Jingjing ^{[2
]}

Xiao, Bo ^{[1
]}

Zhou, Yinghao ^{[1
]}

Li, Qian ^{[1
]}

Xiao, Weicheng ^{[1
]}

Li, Yifeng ^{[3
]}

Zeng, Xiaoqin ^{[2
]}

Wang, Jun ^{[2
]}

Yang, Tao ^{[1
,4
]}

机构：

[1] City Univ Hong Kong, Dept Mat Sci & Engn, Mech Behav Div, Shenyang Natl Lab Mat Sci, Hong Kong, Peoples R China

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[3] TPK Touch Solut Inc, Test Ctr, Dept Failure Anal, Xiamen 361006, Peoples R China

[4] City Univ Hong Kong, Hong Kong Branch Natl Precious Met Mat Engn Res Ct, Hong Kong, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 217卷

关键词：

Complex concentrated alloy; High -temperature oxidation; Oxide scale; TEM; On -axis TKD; HIGH-ENTROPY ALLOY; AIR-OXIDATION; CR-AL; MICROSTRUCTURE; SUPERALLOY; EVOLUTION; MECHANISMS; BEHAVIORS; ADDITIONS; STRENGTH;

D O I：

10.1016/j.corsci.2023.111116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxidation behavior of Al8Cr13.3Fe63.5Ni11.2Ti4 complex concentrated alloy was studied in the air at 800 degrees C. Results show that the oxidation kinetics does not obey a parabola relationship. The oxidation process was divided into two distinct stages, transforming from an approximately parabolic law to a quasi-linear law at 10 h. This alloy exhibits excellent oxidation resistance with only 0.41 mg/cm2 of specific mass gain after 100 h oxidation, ascribed to the compact outer CrTi2O5 +TiO2 and inner Cr2O3 +nano-scale CrTi2O5 oxide layers. However, this oxide scale does not prevent the N from diffusion inward, forming the TiN and AlN in internal oxidation zone.

引用

页数：11

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