Tailoring the secondary phases and mechanical properties of ODS steel by heat treatment

查看全文 作　　者：Qian [1]Zhao;Zongqing [1]Ma;Liming [1]Yu;Huijun [1]Li;Chenxi [1]Liu;Chong [1]Li;Yongchang [1]Liu

机构地区：[1]State Key Lab of Hydraulic Engineering Simulation and Safety,School of Materials Science & Engineering,Tianjin University

出　　处：《Journal of Materials Science & Technology》索引2019年第35卷第6期,共10页

基　　金：the National Natural Science Foundation of China(Grant Nos.51325401,51474156 and U1660201);the National Magnetic Confinement Fusion Energy Research Project(granted No.2014GB125006)for grant and financial support 摘　　要：The oxide dispersion strengthened(ODS) steel with the nominal composition of Fe–14 Cr–2 W–0.3 Ti–0.2 V–0.07 Ta–0.3 Y2O3(wt%) was fabricated by mechanical alloying and hot isostatic pressing(HIP). In order to optimize the relative volume fraction of secondary phases, the as-HIPed ODS steel was annealed at 800°C, 1000°C, 1200°C for 5 h, respectively. The microstructures and different secondary phases of the as-HIPed and annealed ODS samples were identified by scanning electron microscopy(SEM), transmission electron microscopy(TEM), and X-ray diffraction(XRD). The tensile properties of all the ODS steels at room temperature were also investigated. The results indicate that annealing is an effective way to control the microstructure and the integral secondary phases. The annealing process promotes the dissolution of M23C6 particles, thus promoting the precipitation of TiC.No obvious coarsening of Y2Ti2O7 nanoparticles can be observed during annealing. The tensile results indicate that the annealed ODS sample with the optimized secondary phases and high density possesses the best mechanical properties. 关键词：ODS steel ANNEALING SECONDARY phase MECHANICAL property

相关文献

参考文献（63）
引证文献（6）
耦合文献（0）

参考文献(63)

引证文献(6)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Tailoring the secondary phases and mechanical properties of ODS steel by heat treatment

参考文献(63)

引证文献(6)

用户提示