热处理对含铌Cr17不锈钢组织与性能的影响

袁美怡; 赵天天; 龙际银; 杨弋涛

doi:10.15980/j.tzzz.2022.01.014

研究·合金性能 | 浏览量 : 0 下载量: 61 CSCD: 0

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热处理对含铌Cr17不锈钢组织与性能的影响
Effects of Heat Treatment on Microstructure and Properties of Cr17 Stainless Steel Containing Niobium
2022年42卷第1期页码：68-72
纸质出版日期： 2022 ，
DOI： 10.15980/j.tzzz.2022.01.014

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袁美怡, 赵天天, 龙际银, 等. 热处理对含铌Cr17不锈钢组织与性能的影响[J]. 特种铸造及有色合金杂志, 2022,42(1):68-72.

Yuan Meiyi, Zhao Tiantian, Long Jiyin, et al. Effects of Heat Treatment on Microstructure and Properties of Cr17 Stainless Steel Containing Niobium[J]. Special Casting & Nonferrous Alloys, 2022,42(1):68-72.
袁美怡, 赵天天, 龙际银, 等. 热处理对含铌Cr17不锈钢组织与性能的影响[J]. 特种铸造及有色合金杂志, 2022,42(1):68-72. DOI： 10.15980/j.tzzz.2022.01.014.

Yuan Meiyi, Zhao Tiantian, Long Jiyin, et al. Effects of Heat Treatment on Microstructure and Properties of Cr17 Stainless Steel Containing Niobium[J]. Special Casting & Nonferrous Alloys, 2022,42(1):68-72. DOI： 10.15980/j.tzzz.2022.01.014.

摘要

将铸态含铌Cr17不锈钢在1 100℃保温2 h

进行均匀化退火

然后分别在1 000、1 050和1 100℃下保温30 min后水淬

进行固溶处理

最后部分试样进行700℃×1 h的时效处理

对试样显微组织、硬度、力学性能等进行测试与分析

并选择最优方案对其组织变化规律进行研究。结果发现

经1 050℃固溶后时效的试样综合性能最佳。固溶处理后的含NbCr17钢组织为铁素体和少量TiN

经时效处理后析出了σ相

使碳化物含量降低。

Abstract

As-cast Cr17 stainless steel containing niobium was homogenized and annealed at 1 100 ℃ for 2 h.After water quenching at 1 000

1 050 and 1 100 ℃ for 30 min

solution treatment was carried out. Some specimens were aged at 700 ℃ for 1 h. The microstructure

hardness and mechanical properties of the as-cast Cr17 stainless steel were analyzed

and the optimal scheme was selected to investigate microstructure evolution. The results reveal that the comprehensive properties at 1 050 ℃ are desirable. The microstructure of solution treated steel containing niobiumis is composed of ferrite and trace TiN. After aging treatment

σ phase is precipitated and the content carbide is decreased.