文献类型：期刊文献

英文题名：A comparative study on the preparation of 316L stainless steel via additive manufacturing and vacuum arc melting

作者：Yu, YueLiang He, Mei Huang, Junfei Wang, LinZhu Li, Xiang Chen, Chaoyi Li, Junqi Wang, Jun Ran, Xing

第一作者：Yu, YueLiang

通信作者：Wang, LZ[1];Ran, X[2]

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Shimadzu China Co Ltd, Shenzhen Branch, Shenzhen 518042, Guangdong, Peoples R China;[3]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550025, Guizhou, Peoples R China;[4]AVIC Heavy Machinery Co Ltd, Guiyang 550000, Peoples R China

第一机构：Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;corresponding author), AVIC Heavy Machinery Co Ltd, Guiyang 550000, Peoples R China.

年份：2026

卷号：42

起止页码：922-932

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

收录：;EI(收录号：20261220293223);Scopus(收录号：2-s2.0-105032992082);WOS:【SCI-EXPANDED(收录号:WOS:001722502300001)】；

基金：This research was supported by the National Natural Science Foundation of China (Nos. 52274331 and 52264041) , Guizhou Basic Research Program (Natural Science) Talent Team Lift Project (QNB [2025] 005) and Guizhou Provincial Basic Research Program (Natural Science) (ZK [2023] Zhongdian 020) . Additionally, this work was supported by Guizhou Provincial Young Elite Scientist Sponsorship Program (No. Gastyess202405) , Natural Science Research Project of Guizhou Provincial Department of Education ( [2022] 041) . Thanks for the computing support of the State Key Laboratory of Public Big Data, Guizhou University. We thank Junfei Huang and Huabao Li at Shimadzu (China) Co., Ltd. For the help of technology and equipment of Micro-CT.

语种：英文

外文关键词：316L stainless steel; Additive manufacturing; Vacuum arc melting

摘要：Additive manufacturing (AM) offers unique capabilities for producing high-performance alloys with refined microstructures. Here, 316 L stainless steels fabricated by AM and conventional vacuum arc melting (VAM) were systematically compared in terms of microstructure, defects, and mechanical response. The AM steel exhibited a 49% increase in hardness and a 29% improvement in ultimate tensile strength relative to the VAM steel, while its defect volume fraction was reduced to one-third. Both processing routes generated Si-Mn-O inclusions; however, the AM material uniquely contained a high density of nanoscale second-phase particles that contributed to strengthening. Thermodynamic modeling (FactSage) and molten pool simulations (ProCAST) revealed the role of rapid solidification and thermal gradients in promoting nanoscale precipitation and defect mitigation in AM. These findings demonstrate that AM not only tailors defect characteristics but also enables microstructural refinement, thereby offering a pathway to superior mechanical performance compared with conventional melting techniques.