The effects of cold-rolling annealing temperatures on the microstructure and in-situ tensile properties of 019Cr21CuTiNb stainless steel

doi:10.13295/j.cnki.issn1673-5196.2026.04.001

Abstract

Abstract: To explore the evolution of the microstructure and properties of 019Cr21CuTiNb stainless steel under different annealing temperatures, tests were conducted at 930, 990 and 1 050 °C. Microstructure characterization revealed that as the annealing temperature increased from 930 °C to 1 050 °C, the tested steel maintain a single ferritic single-phase structure, grain recrystallization occur, the average grain size grow from 63.64 μm to 121.34 μm, the degree of homogenization decrease, and the number of recrystallized grains increase. This is because the increase in temperature promote grain growth, and the partial dissolution of niobium-titanium carbonitrides which affect the pinning effect on grain boundaries. Tensile tests showed that at 930 °C, the yield strength is 260 MPa, the tensile strength is 423 MPa, the elongation is 28.8%, and the hardness is 194 HV. As the annealing temperature rose, the yield and tensile strength decreased by 14.2 % and 5.9 %, respectively, and elongation increase by 22.2 %. Considering the comprehensive properties, 930 °C is more suitable.

Key words: microalloyed ferritic stainless steel, annealing temperature, microstructure, mechanical properties, in-situ observations

CLC Number:

TG142.1

GAO Yang, SHENG Jie, XU Jian-lin, YANG Peng-hui, TANG Xing-chang, LI Yu-feng. The effects of cold-rolling annealing temperatures on the microstructure and in-situ tensile properties of 019Cr21CuTiNb stainless steel[J]. Journal of Lanzhou University of Technology, 2026, 52(4): 1-9.

Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks

URL: https://journal.lut.edu.cn/EN/10.13295/j.cnki.issn1673-5196.2026.04.001

https://journal.lut.edu.cn/EN/Y2026/V52/I4/1

References

[1] 刘锋.ER430LNb铁素体不锈钢焊丝焊接性研究[D].太原:太原理工大学,2023,18-26.
[2] 刘金元,毕新峰,吴雪,等.430铁素体不锈钢屋面瓦冷轧生产工艺研究与实践[J].山东冶金,2024,46(3):17-19.
[3] 宋虎翼,周星志,王德永,等.钇处理超纯铁素体不锈钢中TiN及凝固组织细化机制研究[J].钢铁研究学报,2025,37(1):86-97.
[4] Long Y H,Yang Y Q,Hu J S,et al.Operating mechanism detection in aluminum electrolysis workshops via YOLOv8-MIE[J].IEEE Transactions on Instrumentation and Measurement,2025,74:2503515.
[5] Zhang C,Xu Y J,Zhang L W,et al.Crystal plasticity analysis of the relation between microtexture and surface ridging for a 21% Cr ferritic stainless steel[J].Steel Research International,2020,91(10):2000109.
[6] Meng Y H,Sheng J,Ma Z W,et al.The influence of the hot-rolling temperature on the microstructure and mechanical properties of Ti-Nb microalloyed 21% Cr ferritic stainless steel[J].Metals,2024,14(10):1099.
[7] Amttila S,Alatarvas T,Porter D A.Factors affecting impact toughness in stabilized intermediate purity 21Cr ferritic stainless steels and their simulated heat-affected zones[J].Metallurgical and Materials Transactions A,2017,48(12):5879-5889.
[8] 祝洋洋,宁礼奎,段超辉,等.Ti-Nb微合金化对超纯30%Cr超级铁素体不锈钢组织和力学性能的影响[J].稀有金属材料与工程,2022,51(5):1845-1856.
[9] 武敏,李国平,邹勇,等.退火温度对441铁素体不锈钢组织性能的影响[J].钢铁,2021,56(1):97-103.
[10] 赵萍.400系不锈钢推广前景看好[N].中国冶金报,2023-04-19(12).
[11] 李阳,孙深,何盼,等.铌钛稳定化对铁素体不锈钢夹杂物、组织及性能的影响[J].材料热处理学报,2021,42(2):66-73.
[12] 侯雨阳.钛、铌对超纯铁素体不锈钢凝固过程第二相析出及对凝固组织的影响[D].北京:北京科技大学,2020,36-44.
[13] Han J,Zhu Z X,Wei G,et al.Microstructure and mechanical properties of Nb- and Nb+Ti- stabilised 18Cr-2Mo ferritic stainless steels[J].Acta Metallurgica Sinica (English Letters),2020,33(7):716-730.
[14] Gu Y,Zhang J J.Strain-induced precipitation in Nb+Ti dual stabilisation ferritic stainless steel[J].Materials Science and Technology,2017,33(11):1298-1350.
[15] 武敏,付金柱,刘春来,等.高铌超纯铁素体不锈钢中铌的偏析行为及机理分析[J].中国冶金,2024,34(7):51-57.
[16] 魏佳富.钛微合金化443不锈钢第二相析出热力学计算与力学性能研究[D].兰州:兰州理工大学,2023,22-30.
[17] Tanure L,De Alcntara C M,Santos D B,et al.Microstructural characterization and mechanical behavior during recrystallization annealing of Nb-stabilized type ASTM 430 and Nb-Ti-stabilized ASTM 439 ferritic stainless steels[J].Journal of Materials Research and Technology,2019,8(5):4048-4065.
[18] 陈闯.轧制及热处理对铁素体不锈钢组织、性能的影响[D].长春:长春工业大学,2022,28-36.
[19] 刘海涛,高飞,马东旭,等.高纯Cr17铁素体不锈钢热轧板退火温度对冷轧退火板成形性能的影响[J].钢铁,2010,45(8):75-79.
[20] 高飞,刘振宇,王国栋.超低碳、氮Cr17铁素体不锈钢低温轧制工艺中织构演变[J].材料研究学报,2011,25(5):469-475.
[21] 高飞,刘振宇,王国栋.高纯Cr17铁素体不锈钢的热变形行为[J].东北大学学报(自然科学版),2011,32(10):1406-1409.
[22] Li C S,Cai G J,Wang D G,et al.Effect of precipitates on mechanical properties for annealed Fe-19Cr-2Mo-Nb-Ti ferritic stainless steel[J].Procedia Manufacturing.2018,15:1604-1611.
[23] Ma G C,Sheng J,Gao Y,et al.Effect of annealing temperature on microstructure and mechanical properties of 00Cr21CuTi stainless steel cold-rolled sheets[J].Metals,2024,14(12):1367.
[24] 江亮,廖铭煜,王振东,等.冷却速率对δ-TRIP钢包晶相变的影响[J].工程科学学报,2023,45(5):747-754.
[25] 葛杰,刘晓,刘浏.超纯铁素体不锈钢脆性及形成特点对性能的影响[J].中国冶金,2022,32(4):9-20.
[26] 刘海涛,马东旭,刘振宇,等.终轧温度对超纯铁素体不锈钢组织、织构及成形性能的影响[J].钢铁研究学报,2010,22(8):31-35.
[27] Yasunaka T,Kanao M.Fracture characteristics of 475 ℃ embrittled 30%Cr ferritic stainless steels[J].Transactions of the Iron and Steel Institute of Japan,2019,19(2):69-75.
[28] 盛捷,喇培清,任军强,等.SEM原位观察双尺度纳米晶304不锈钢的断裂行为[J].兰州理工大学学报,2019,45(2):10-15.
[29] 周俊键,张学习,钱明芳,等.常见结构材料低温性能研究进展[J].航空材料学报,2024,44(2):72-86.
[30] 盛捷,魏佳富,孟亚惠,等.21Cr超纯铁素体不锈钢TiN析出的热动力学研究[J].兰州理工大学学报,2023,49(5):1-9.
[31] 赵小龙,罗晓阳,王正仲,等.退火参数对45#钢微观组织和力学性能的影响[J].兰州理工大学学报,2024,50(6):11-16.
[32] 王鹏辉,张晓波.形变热处理调控AlCoCrFeNi_2.1高熵合金组织及性能[J].兰州理工大学学报,2024,50(4):1-5.