Transmission Electron Microscopy Characterization of Grain Structure and Nanoparticles of 15-15Ti ODS Austenitic Steel
GONG Aoxiang1, XU Chi2, AN Zhan1, TONG Zhenfeng1,*
1 School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China 2 Key Laboratory of Beam Technology of the Ministry of Education, School of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
Abstract: Due to their excellent corrosion resistance and high temperature mechanical properties, the 15-15Ti austenitic stainless steels have been selected as a candidate cladding material for the sodium-cooled fast reactor. Its high-temperature mechanical strength and resistance to irradiation swelling can be enhanced by oxide dispersion strengthening (ODS). In this study, 15-15Ti ODS austenitic steel was manufactured by mechanical alloying and forging processes. The 15-15Ti steel manufactured following the same procedures without additions of ODS particles was chosen as the control sample material. The microstructure of the sample was characterized by multiple transmission electron microscopy (TEM) techniques. The dispersion characteristics and strengthening mechanism of oxide particles in the ODS austenitic stainless steel were comprehensively investigated. The special distribution of the oxide dispersion particles was generally uniform, however, a clustering tendency was also identified. The average size of the particles was estimated to be (9.97±0.04) nm, the average distances between the particles was (17.25±0.68) nm, and the number density was about 5.32×1022 m-3. The pinning effect of oxide particles on dislocations was observed in the ODS samples through TEM bright field imaging. Two oxides were revealed in the ODS sample by scanning transmission electron microscopy (STEM) combined with energy dispersive X-ray (EDX) spectroscopy, which consists a small proportion of Al2O3 particles and a large proportion of Y4Zr3O12 particles. High-resolution transmission electron microscopy characterizations reveal signs of a coherent or semi-coherent interface between the second-phase particle and the 15-15Ti matrix, and a few particles appear around amorphous interfaces.
1 Vatulin A V, Tselishchev A V. Metal Science and Heat Treatment, 2004, 46, 463. 2 Zinkle S J, Busby J T. Materials Today, 2009, 12(11), 12. 3 Garner F A, Toloczko M B, Sencer B H. Journal of Nuclear Materials, 2000, 276, 123. 4 Zhang D H, Qiao P R, Yang Y, et al. Atomic Energy Science and Technology, 2019, 53(10), 1816 (in Chinese). 张东辉, 乔鹏瑞, 杨勇, 等. 原子能科学技术, 2019, 53(10), 1816. 5 Yvon P, Le Flem M, Cabet C, et al. Nuclear Engineering and Design, 2015, 294, 161. 6 Zinkle S J, Boutard J L, Hoelzer D T, et al. Nuclear Fusion, 2017, 57(9), 092005. 7 De Carlan Y, Bechade J L, Dubuisson P, et al. Journal of Nuclear Materials, 2009, 386-388, 430. 8 Hsiung L, Fluss M, Tumey S, et al. Journal of Nuclear Materials, 2011, 409(2), 72. 9 Mo K, Zhou Z, Miao Y, et al. Journal of Nuclear Materials, 2014, 455, 376. 10 Oka H, Watanabe M, Kinoshita H, et al. Journal of Nuclear Materials, 2011, 417, 279. 11 Zhang H K, Yao Z, Zhou Z, et al. Journal of Nuclear Materials, 2014, 455, 242. 12 Miao Y, Mo K, Zhou Z, et al. Journal of Nuclear Materials, 2016, 480, 195. 13 Miao Y, Mo K, Zhou Z, et al. Materials Science and Engineering:A, 2015, 625, 146. 14 Zhao R L, Jia H D, Cao S G, et al. Chinese Journal of Engineering, 2023, 45(1), 107 (in Chinese). 赵瑞林, 贾皓东, 曹书光, 等. 工程科学学报, 2023, 45(1), 107. 15 Odette G R, Alinger M J, Wirth B D. Annual Review of Materials Research, 2008, 38(1), 471. 16 Dong H Q. Effect of Zr, Hf additon on the microstructure and tensile properties of FeCrAl ODS steels. Master’s Thesis, Tianjin University, China, 2017 (in Chinese). 董红庆. Zr、Hf对Fe-Cr-Al系ODS钢显微组织和拉伸性能的影响. 硕士学位论文, 天津大学, 2017. 17 Williams D B, Carter C B. Transmission electron microscopy:a textbook for materials science, Plenum Press, USA, 1996. 18 Dou P, Kimura A, Kasada R, et al. Journal of Nuclear Materials, 2014, 444, 441. 19 Koch C C, Cavin O B, McKamey C G, et al. Applied Physics Letters, 1983, 43(11), 1017. 20 Song M, Chen K H, Huang L P. Rare Metal Materials and Engineering, 2007(6), 1005 (in Chinese). 宋旼, 陈康华, 黄兰萍. 稀有金属材料与工程, 2007(6), 1005. 21 Zhang L, Song R, Zhao C, et al. Materials Science and Engineering:A, 2015, 640, 225. 22 Susila P, Sturm D, Heilmaier M, et al. Journal of Materials Science, 2010, 45(17), 4858. 23 Zhang S L, Wu Z F, Sun B R, et al. Materials Characterization, 2022, 194, 112353. 24 Martin G. Physical Review B, 1984, 30(3), 1424. 25 Praud M, Mompiou F, Malaplate J, et al. Journal of Nuclear Materials, 2012, 428, 90. 26 Bailey J E, Hirsch P B. Philosophical Magazine, 1960, 5(53), 485. 27 Kim J H, Byun T S, Hoelzer D T, et al. Materials Science and Enginee-ring:A, 2013, 559, 111. 28 Stoller R E, Zinkle S J. Journal of Nuclear Materials, 2000, 283-287, 349. 29 Kubena I, Fournier B, Kruml T. Journal of Nuclear Materials, 2012, 424, 101. 30 Preininger D. Journal of Nuclear Materials, 2002, 307-311, 514. 31 Chauhan A, Bergner F, Etienne A, et al. Journal of Nuclear Materials, 2017, 495, 6. 32 Sun Y Z. Study on microstructure and oxide nanoparticles in ODS steel. Master’s Thesis, Hunan University, China, 2021 (in Chinese). 孙煜舟. ODS钢中微观结构与氧化物纳米粒子研究. 硕士学位论文, 湖南大学, 2021. 33 Ramar A, Baluc N, Schäublin R. Journal of Nuclear Materials, 2009, 386-388, 515. 34 Klimiankou M, Lindau R, Möslang A, et al. Powder Metallurgy, 2005, 48(3), 277. 35 Dou P, Kimura A, Kasada R, et al. Journal of Nuclear Materials, 2017, 485, 189.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
