Thermal aging behavior of 14Cr-ODS steel

doi:10.13251/j.issn.0254-6051.2020.06.032

Abstract

Abstract: In order to investigate the thermal stability of oxide dispersion strengthened (ODS) steel, 14Cr-ODS steel with Fe-14Cr-2W-0.3Ti-0.2V-0.07Ta-0.3Y₂O₃ (wt%) was prepared by means of mechanical alloying and hot isostatic pressing (HIP) sintering, and the long time thermal aging was carried out at 700 ℃ for 1000 h, 2000 h and 3000 h, respectively. The evolution of microstructure and secondary phases during the thermal aging was characterized. In addition, the Vickers microhardness values of the ODS samples were analyzed. The results indicate that no obvious change of microstructure can be found during the thermal aging process. The M₂₃C₆ particles partially dissolve into the matrix, thus promoting the precipitation of TiC and Y₂Ti₂O₇ nanoparticles during aging. The spherical Y₂Ti₂O₇ particles in the as-sintered ODS specimen turn into cuboidal without changing of size after long time aging. Both the matrix microstructure and secondary phases keep stable when the aging time increases to 2000 h and 3000 h, to which the microhardness results correspond.

Key words: 14Cr-ODS steel, thermal aging, secondary phase, hardness

CLC Number:

TG161

Zhang Zheping, Shi Qingzhi, Zhao Qian, Ren Qianqian. Thermal aging behavior of 14Cr-ODS steel[J]. Heat Treatment of Metals, 2020, 45(6): 153-156.

References

[1]Oksiuta Z, Lewandowska M, Kurzyd ŀowski K J. Mechanical properties and thermal stability of nanostructured ODS RAF steels[J]. Mechanics of Materials, 2013, 67(6): 15-24.
[2]Shen J, Yang H, Li Y, et al. Microstructural stability of an as-fabricated 12Cr-ODS steel under elevated-temperature annealing[J]. Journal of Alloys and Compounds, 2017, 695: 1946-1955.
[3]Odette G R, Alinger M J, Wirth B D. Recent developments in irradiation-resistant steels[J]. Annual Review of Materials Research, 2008, 38(1): 471-503.
[4]Kurpaska L, Jozwik I, Lewandowska M, et al. The effect of Ar-ion irradiation on nanomechanical and structural properties of ODS RAF steels manufactured by using HIP technique[J]. Vacuum, 2017, 145: 144-152.
[5]Hirata A, Fujita T, Liu C T, et al. Characterization of oxide nanoprecipitates in an oxide dispersion strengthened 14YWT steel using aberration-corrected STEM[J]. Acta Materialia, 2012, 60(16): 5686-5696.
[6]He P, Gao P, Tian Q, et al. An in-situ SANS study of nanoparticles formation in 9Cr ODS steel powders[J]. Materials Letters, 2017, 209: 535-538.
[7]Zhou X, Liu Y, Yu L, et al. Microstructure characteristic and mechanical property of transformable 9Cr-ODS steel fabricated by spark plasma sintering[J]. Materials and Design, 2017, 132: 158-169.
[8]Eiselt C C, Klimenkov M, Lindau R, et al. High-resolution transmission electron microscopy and electron backscatter diffraction in nanoscaled ferritic and ferritic-martensitic oxide dispersion strengthened-steels[J]. Journal of Nuclear Materials, 2009, 385(2): 231-235.
[9]Chauhan A, Bergner F, Etienne A, et al. Microstructure characterization and strengthening mechanisms of oxide dispersion strengthened (ODS) Fe-9%Cr and Fe-14%Cr extruded bars[J]. Journal of Nuclear Materials, 2017, 495: 6-19.
[10]刘桂良, 唐睿, 陈乐, 等. 烧结温度对ODS钢的显微结构及弥散相的影响[J]. 热加工工艺, 2019, 48(4): 71-73.
Liu Guiliang, Tang Rui, Chen Le, et al. Effects of sintering temperature on microstructure and dispersed phase of ODS steel[J]. Hot Working Technology, 2019, 48(4): 71-73.
[11]Taneike M, Sawada K, Abe F. Effect of carbon concentration on precipitation behavior of M₂₃C₆ carbides and MX carbonitrides in martensitic 9Cr steel during heat treatment[J]. Metallurgical Materials Transactions A, 2004, 35(4): 1255-1262.
[12]Olier P, Malaplate J, Mathon M H, et al. Chemical and microstructural evolution on ODS Fe-14CrWTi steel during manufacturing stages[J]. Journal of Nuclear Materials, 2012, 428(1/3): 40-46.
[13]Sornin D, Giroux P F, Rigal E, et al. Influence of powder outgassing conditions on the chemical, microstructural, and mechanical properties of a 14wt%Cr ferritic ODS steel[J]. Metallurgical Materials Transactions A, 2017, 48(11): 5559-5566.
[14]Ribis J, Carlan D E. Interfacial strained structure and orientation relationships of the nanosized oxide particles deduced from elasticity-driven morphology in oxide dispersion strengthened materials[J]. Acta Materialia, 2012, 60(1): 238-252.

[1]	Fu Xibin, Chen Zihao, Zhang Ke, Zhao Shiyu, Sun Xinjun, Zhu Zhenghai, Liang Xiaokai, Yong Qilong. Effect of quenching temperature on microstructure and mechanical properties of high Ti low alloy wear-resistant steel [J]. Heat Treatment of Metals, 2022, 47(4): 122-127.
[2]	Li Li, Zeng Yan, Wu Xiaochun. Heat treatment process optimization for 4Cr5Mo2VCo steel [J]. Heat Treatment of Metals, 2022, 47(4): 133-140.
[3]	Sun Kai, Chen Yan, Yang Shaobin. Effect of aging temperature on microstructure and hardness of laser selective melting TC21 titanium alloy [J]. Heat Treatment of Metals, 2022, 47(4): 155-158.
[4]	Zhang Jun, Zhao Sixin. Spheroidizing annealing process of 16MnCrS5 steel for cold forging gear [J]. Heat Treatment of Metals, 2022, 47(4): 185-188.
[5]	Dai Jianke, Han Shun, Li Yong, Liu Xianmin, Wang Chunxu, Pang Xuedong, Li Jianxin. Microstructure and properties of C69 gear steel for aviation after high temperature carburizing [J]. Heat Treatment of Metals, 2022, 47(4): 219-225.
[6]	Su Yong, Wang Shuai, Wang Jixing, Yu Xingfu, Liu Hongxiu, Liu Jinling. Effect of compound chemical heat treatment on microstructure and hardness of G13Cr4Mo4Ni4V steel [J]. Heat Treatment of Metals, 2022, 47(4): 226-230.
[7]	Wang Jingyuan, Wu Songquan, Zhang Bohua, Xin Shewei, Yang Yi, Wang Hao, Huang Aijun. Effects of solution treatment and aging on microstructure and hardness of BT25y titanium alloy [J]. Heat Treatment of Metals, 2022, 47(3): 14-19.
[8]	Sun Jian, Huang Zhenyi, Li Jinghui, Wang Ping. Effect of solution treatment and aging on microstructure and hardness of Fe-Mn-Al-C light weight steel [J]. Heat Treatment of Metals, 2022, 47(3): 34-38.
[9]	Yang Chunmiao, Wang Shan, Wang Shuhui, Li Yanzhen, Liu Wenwen. Influence of pre-aging time on microstructure and properties of 7A85 aluminum alloy during RRA process [J]. Heat Treatment of Metals, 2022, 47(3): 44-47.
[10]	Sun Guojin, Gao Zhiwen, Cui Xiaoyan, Gao Kekun, Sun Li. Effect of dual liquid quenching on microstructure and hardness of 9Cr2Mo steel roller [J]. Heat Treatment of Metals, 2022, 47(3): 88-91.
[11]	Cheng Tijuan, Gan Bin, Yu Hongyao, Zhou Haijing, Guo Caiyu, Bi Zhongnan, Du Jinhui. Effect of solution treatment on structure and properties of a novel nickel-based superalloy [J]. Heat Treatment of Metals, 2022, 47(3): 107-112.
[12]	Wang Rong, Gong Yuhui, Yin Xuejun, Wei Deqiang. Effect of multi-pass electron beam scanning overlap rate on microstructure and properties of 40Cr steel [J]. Heat Treatment of Metals, 2022, 47(3): 191-197.
[13]	Zhou Zhongping, Zhang Xiaojuan, Bai Lu, Yu Fangyin, Min Yong'an. Microstructure and properties of T250 steel after plasma nitriding [J]. Heat Treatment of Metals, 2022, 47(3): 210-214.
[14]	Zhang Shijin, Li Kai, Yi Danqing, Liu Huiqun. Recrystallization behavior and texture evolution of cold rolled TA5 titanium alloy during annealing [J]. Heat Treatment of Metals, 2022, 47(2): 1-8.
[15]	Liu Yujun, Cheng Xiaonong, Luo Rui, Gao Pei. Effect of heat treatment process on microstructure and properties of Inconel 617 alloy tube [J]. Heat Treatment of Metals, 2022, 47(2): 173-177.