Impact Factor:6.2
DOI number:10.1016/j.jallcom.2022.164071
Affiliation of Author(s):中南大学粉末冶金研究院
Teaching and Research Group:高温结构材料研究所
Journal:Journal of Alloys and Compounds
Funded by:国家科学技术主要项目（J2019-IV-0003-0070）、中国自然科学基金（91860105、52074366）、中国博士后科学基金会（2019M662799）、中国湖南省自然科学基金（2021JJ40757）、湖南省科技创新计划（2021RC3131）、铂金属综合利用先进技术国家重点实验室基金（SKL-SPM-202013）、云南主要科技项目（202002AB080001-1）
Key Words:Oxidation resistance, Refractory elementsIso, Thermal oxidation, Ni-based superalloy, Interdiffusivity
Abstract:Refractory elements are added to strengthen the Ni-based superalloys for turbine disks, while the effects of these elements on the oxidation resistance remain to be investigated systematically to continually improve the working temperature. In this work, the effects of typical strengthening elements, including Ta, W, Mo, Hf and Nb, on the isothermal oxidation behavior of Ni-based superalloys at 900 degrees C were studied. The results indicated that increasing concentrations of Ta, W, and Mo enhanced the oxidation resistance, while adding 4 wt% Nb and 2 wt% Hf accelerated the oxidation rates in different degrees, which was explained in terms of diffusion and phase precipitation. (c) 2022 Elsevier B.V. All rights reserved.
Co-author:Xin Zhan, Feng Liu, Yu Guo, Qiangbing Wang, Yunping Li, Zi Wang, Zexin Wang, Xueling Fan, Yan Wei, Lan Huang
First Author:Shiya Yu
Indexed by:Article
Correspondence Author:Liming Tan
Document Code:164071
Discipline:Engineering
First-Level Discipline:冶金
Volume:904
ISSN No.:0925-8388
Translation or Not:no