文献类型：期刊文献

英文题名：The enhanced high-temperature oxidation resistance of additively manufactured GH4169 by adding small amounts of 304L

作者：Li, Yajing[1];Dai, Hailong[2];Zhang, Shuyao[2];Li, Bo[1];Ma, Yunran[2];Bao, Chengyu[1];Chen, Xu[2];Xuan, Fuzhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China;[2]Tianjin Univ, Sch Chem Engn & Technol, Tianjin, Peoples R China

年份：2024

卷号：30

起止页码：164

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：;EI(收录号：20241315799635);WOS:【SCI-EXPANDED(收录号:WOS:001237037300001)】；

基金：This work was supported by the China Postdoctoral Science Foundation (2023TQ0113) , Shanghai Pujiang Programme (23PJD022) , the National Key Research and Development Program of China (2022YFC3004500, 2018YFC0808600) , the National Natural Science Foundation of China (52075368, 12011540001) , and Ningbo Natural Science Foundation (2021J006) .

语种：英文

外文关键词：GH4169; Selective laser melting; Additive manufacturing; High temperature oxidation; Intergranular oxidation

摘要：Enhancing the high -temperature oxidation resistance of nickel -based alloys is critical for expanding their industrial applications. Herein, we report a novel strategy for enhancing the high -temperature oxidation resistance of the GH4169 nickel -based alloy by adding small amounts of 304L stainless steel using selective laser melting technology. The oxidation property of GH4169 with various 304L additions (2 wt.%, 4 wt.%, and 6 wt.%) at 900 degrees C for 45 h was investigated. Results show that the addition of 304L significantly improves the oxidation resistance of GH4169. The thickness of the oxide film and the intergranular oxidation depth of GH4169 with 6 wt.% 304L added are reduced by 61% and 69%, respectively. The addition of 304L increases Cr and decreases Ni in the matrix, which facilitates the formation of a more compact oxide film. The Nb in Laves phase will be increased with 304L addition, which effectively inhibits oxygen penetration and metallic element diffusion.