High-temperature oxidation behaviour of a Co-based superalloy fabricated through laser powder bed fusion

Guo，Chuan1; Li，Yu2; Li，Ying1; Li，Gan2,3; Lu，Xinya3; Li，Zhuoyu2; Chen，Xuliang3; Li，Xinggang2; Zhou，Lin3; Zhu，Qiang2; Lu，Jian1,3

2024-02-01

10.1016/j.corsci.2023.111703

Corrosion Science   影响因子和分区

0010-938X

This study investigated the oxidation behaviour of a Co-based superalloy fabricated through laser powder bed fusion at 900 ℃. In terms of oxidation products, the results revealed the generation of basic oxides, such as CoO, AlO and TiO, and Co-containing spinels, such as CoAlO and CoTiO. Heat treatment improved oxidation resistance by reducing the parabolic oxidation rate constant from 0.17234 to 0.10032 mg cm h. γ′ precipitates, twin boundaries and less spallation in the heat-treated sample contributed to this improvement, leading to a superior oxidation resistance in this study than in previously reported Co-Al-W-based alloys.

Co-based superalloy Heat treatment Laser powder bed fusion Oxidation behaviour

SCI ; EI

英语

通讯

MATERIALS SCIENCE

2-s2.0-85179063754

Scopus

1.CityU-Shenzhen Futian Research Institute,Shenzhen,518045,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Mechanical Engineering,City University of Hong Kong,Kowloon,Hong Kong,China

Guo，Chuan,Li，Yu,Li，Ying,et al. High-temperature oxidation behaviour of a Co-based superalloy fabricated through laser powder bed fusion[J]. Corrosion Science,2024,227.

Guo，Chuan.,Li，Yu.,Li，Ying.,Li，Gan.,Lu，Xinya.,...&Lu，Jian.(2024).High-temperature oxidation behaviour of a Co-based superalloy fabricated through laser powder bed fusion.Corrosion Science,227.

Guo，Chuan,et al."High-temperature oxidation behaviour of a Co-based superalloy fabricated through laser powder bed fusion".Corrosion Science 227(2024).