Precipitation behavior of 0Cr14Mn21NiN austenitic stainless steel

doi:10.13251/j.issn.0254-6051.2020.01.033

Abstract

Abstract: Thermo-mechanical calculation software of Thermal-Calc was used to calculate the thermodynamic characteristics of carbide precipitation in 0Cr14Mn21NiN austenitic stainless steel. The effects of aging temperature, holding time and deformation on the precipitation behavior of the experimental steel were investigated by means of metallographic microscope, scanning electron microscopy and transmission electron microscopy. The results show that the precipitation phase is mainly Cr ₂₃ C ₆ produced at the grain boundary, and the sensitive temperature for precipitation of the experimental steel is about 750-850 ℃. The precipitation phase can be obviously observed at the grain boundary of the experimental steel aged at 800 ℃ for 30 min. With the prolongation of the holding time, the content of the precipitated phase increases gradually, the size becomes larger, and gradually grows into the grain. The deformation before aging significantly shortens the incubation time of the precipitated phase, and more precipitated phases can be observed at the grain boundary of the experimental steel when kept for 1 min after deformation, and the grain boundary becomes coarsened.

Key words: 0Cr14Mn21NiN austenitic stainless steel, aging, deformation, precipitation behavior, Cr₂₃C₆ phase

CLC Number:

TG156.2

Li Kaiqiang, Qu Huapeng, Feng Hanqiu, Lang Yuping, Chen Haitao, Yang Yinhui. Precipitation behavior of 0Cr14Mn21NiN austenitic stainless steel[J]. HTM, 2020, 45(1): 164-169.

References

[1]屈华鹏, 郎宇平, 陈海涛. 无磁钻铤用高氮不锈钢的研究和发展[J]. 热加工工艺, 2014, 43(24): 14-18.
Qu Huapeng, Lang Yuping, Chen Haitao. Research and development on high nitrogen stainless steels used for non-magnetic drilling collar[J]. Hot Working Technology, 2014, 43(24): 14-18.
[2]邹章雄, 郎宇平, 屈华鹏, 等. 无磁钻铤用Cr-Mn-N奥氏体不锈钢组织性能研究[J]. 热加工工艺, 2013, 42(18): 147-152.
Zou Zhangxiong, Lang Yuping, Qu Huapeng, et al. Research on microstructure and properties of Cr-Mn-N austenitic stainless steel for non-magnetic drilling collar application[J]. Hot Working Technology, 2013, 42(18): 147-152.
[3]Li Huabing, Jiang Zhouhua, Zhang Zurui, et al. Mechanical properties of nickel free high nitrogen austenitic stainless steels[J]. Journal of Iron and Steel Research International, 2007, 14(5): 330-334.
[4]Ji Changtao, Jiang Yuzhen, Liu Yunxu. Corrosion resistance of nickel free high nitrogen austenitic stainless steel[J]. Heat Treatment of Metals, 2011, 36(3): 51-54.
[5]Lee E, Ryu J, Jeon S, et al. Mechanical and corrosion properties of Fe-Cr-Mn-C-N austenitic stainless steels for drill collars[J]. Metallurgicaland Materials Transactions A, 2016, 47(6): 2550-2554.
[6]陆世英. 不锈钢概论[M]. 北京: 化学工业出版社, 2013: 203-206.
[7]Qu H P, Chen H T, Cao C X, et al. Mechanism research on accelerated embrittlement phenomenon of a warm-deformed Cr-Mn-Ni-Mo-N austenitic stainless steel[J]. Materials Science and Engineering A, 2017, 680: 1-12.
[8]Lee T H, Oh C S, Lee C G, et al. Precipitation of σ-phase in high-nitrogen austenitic 18Cr-18Mn-2Mo-0.9N stainless steel during isothermal aging[J]. Scripta Materialia, 2004, 50(10): 1325-1328.
[9]邹章雄. 新型无磁钻铤用高氮奥氏体不锈钢的研究[D]. 昆明: 云南大学, 2013.
[10]刘宝胜, 李国栋, 卫英慧. 奥氏体不锈钢中σ相析出及其对性能影响的研究进展[J]. 钢铁研究学报, 2014, 26(1): 1-6.
Liu Baosheng, Li Guodong, Wei Yinghui. Review of σ phase precipitation and its influence on performance in austenitic stainless steel[J]. Journal of Iron and Steel Research, 2014, 26(1): 1-6.
[11]秦凤明, 李亚杰, 赵晓东, 等. 含N量对Mn18Cr18N奥氏体不锈钢的析出行为及力学性能的影响[J]. 金属学报, 2018, 54(1): 55-64.
Qin Fengming, Li Yajie, Zhao Xiaodong, et al. Effect of nitrogen content on precipitation behavior and mechanical properties of Mn18Cr18N austenitic stainless steel[J]. Acta Metallurgica Sinica, 2018, 54(1): 55-64.
[12]宾远红, 李培芬, 骆亍, 等. 压缩变形对双相不锈钢σ相析出行为的影响[J]. 金属热处理, 2015, 40(11): 64-67.
Bin Yuanhong, Li Peifen, Luo Chu, et al. Effect of deformation on σ-phase precipitation behavior of duplex stainless steel[J]. Heat Treatment of Metals, 2015, 40(11): 64-67.

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