Review on precipitates and high-temperature properties of alumina-forming austenitic stainless steel

• DOI: 10.1016/j.jmrt.2023.07.030
• Publication Date: 2023-07-05T22:08:19Z
• Authors: Qiuzhi Gao; Ziyun Liu; Linlin Sun; Qingshuang Ma; Hailian Zhang; Jing Bai; Xiaoping Lin; Liming Yu; Huijun Li
• Keywords: Mining engineering. Metallurgy; 0203 mechanical engineering; Alloying elements; Oxidation resistance; TN1-997; 02 engineering and technology; Alumina-forming austenitic (AFA) stainless steel; Precipitates; Creep properties

Heat-resistant materials, applied to manufacturing high-temperature components, are pivotal for raising the steam temperature parameters of advanced ultra-supercritical power plants. Alumina-forming austenitic (AFA) stainless steel, a promising candidate material applied to manufacture high-temperature components in fossil-fired ultra-supercritical steam plants, has been concerned by researchers. In this review, the recent progress of AFA steels with considerations of precipitations, high-temperature creep properties, and oxidation resistance was summarized. The stability of precipitates at high temperatures was discussed along with their competitive precipitation behavior. Furthermore, the factors which affect high-temperature creep properties of AFA steels were discussed. Simultaneously, the oxidation behaviors of AFA steels in diverse settings were evaluated.