Effect of nitrogen and heat treatment on microstructure of 028 alloy

doi:10.13251/j.issn.0254-6051.2021.09.006

Abstract

Abstract: Influence of main elements of 028 alloy on saturated solubility of nitrogen and precipitation temperature of equilibrium phase was analyzed by using Thermo-Calc software, and the tested alloys with different nitrogen contents were designed. The microstructure of the tested alloys was observed and studied by means of optical microscope and SEM. The results show that Cr, Mo and Mn promote the saturated solubility of nitrogen, Ni and Cu reduce the saturated solubility of nitrogen, Ni reduces the precipitation temperature of σ phase remarkably, but Cr and Mo increase the precipitation temperature of σ phase remarkably. The equiaxial properties of grains become better with the increase of solution temperature, and fully recrystallized equiaxial crystals are obtained at 1080 ℃. When the solution treatment temperature exceed 1110 ℃, the recovery and recrystallization of the tested alloys are complete and the grain grow rapidly. At the same solution treatment temperature, the higher the nitrogen content is, the smaller the grain of the tested alloy is, which indicates that N plays a role in grain refining.

Key words: thermodynamic calculation, 028 alloy, nitrogen content, microstructure, solution treatment

CLC Number:

TG156

Gong Fangyuan, Feng Hanqiu, Lang Yuping, Chen Haitao, Wang Man, Zhu Xiongming, Leng Chongyan. Effect of nitrogen and heat treatment on microstructure of 028 alloy[J]. Heat Treatment of Metals, 2021, 46(9): 36-41.

References

[1]张忠铧, 张春霞, 陈长风, 等. 高酸性腐蚀气田用镍基合金油套管的开发[J]. 钢管, 2011, 40(4): 23-28.
Zhang Zhonghua, Zhang Chunxia, Chen Changfeng, et al. Development of nickel base alloy oil bushing for high acid corrosion gas field[J]. Steel Pipe, 2011, 40(4): 23-28.
[2]邢娜, 何立波, 黄宝, 等. 国外非API高耐蚀油套管品种开发现状[J]. 世界钢铁, 2012, 12(4): 42-49,65.
Xing Na, He Libo, Huang Bao, et al. Development status of non-api high corrosion resistant oil casing varieties abroad[J]. World Iron and Steel, 2012, 12(4): 42-49,65.
[3]李鹤林, 韩礼红, 张文利. 高性能油井管的需求与发展[J]. 钢管, 2009, 38(1): 1-9.
Li Helin, Han Lihong, Zhang Wenli. Demand and development of high-performance well pipe[J]. Steel Pipe, 2009, 38(1): 1-9.
[4]张丽娜, 董建新, 张麦仓, 等. 油井管用铁镍基耐蚀合金研究[J]. 世界钢铁, 2013, 13(1): 54-63.
Zhang Lina, Dong Jianxin, Zhang Maicang, et al. Research on iron and nickel base corrosion resistant alloy for oil well pipeline[J]. World Iron and Steel, 2013, 13(1): 54-63.
[5]赵春辉, 郑飞, 丁磊, 等. 耐蚀合金油井管的发展概况[J]. 钢管, 2014, 43(4): 11-17.
Zhao Chunhui, Zheng Fei, Ding Lei, et al. Development of corrosion-resistant alloy oil well pipe[J]. Steel Pipe, 2014, 43(4): 11-17.
[6]Gavriljuk V G, Berns H. High Nitrogen Steels[M]. Berlin: Springer, 1999.
[7]Kowanda C. Solubility of nitrogen in transition metals[C]//HNS 2003-High Nitrogen Steels. 2003:75-90.
[8]赵英利, 嵇爽, 张雲飞, 等. 节镍型高氮奥氏体不锈钢固溶处理加热过程中的组织演变[J]. 金属热处理, 2019, 44(1): 45-48.
Zhao Yingli, Ji Shuang, Zhang Yunfei, et al. Microstructure evolution during solid solution treatment of high-nitrogen austenitic stainless steel[J]. Heat Treatment of Metals, 2019, 44(1): 45-48.
[9]翁建寅, 董瀚, 李北, 等. N含量对高氮CrMnMo奥氏体不锈钢组织和性能的影响[J]. 金属热处理, 2020, 45(1): 160-163.
Weng Jianyin, Dong Han, Li Bei, et al. Effect of N content on microstructure and properties of high nitrogen CrMnMo austenitic stainless steel[J]. Heat Treatment of Metals, 2020, 45(1): 160-163.
[10]薛忍让, 宋志刚, 郑文杰, 等. 氮对316L晶粒尺寸和力学性能的影响[J]. 钢铁研究学报, 2013, 25(10): 36-41.
Xue Renrang, Song Zhigang, Zheng Wenjie, et al. Effects of nitrogen on grain size and mechanical properties of 316L[J]. Journal of Iron and Steel Research, 2013, 25(10): 36-41.

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