Effects of Heat Treatment on Microstructure and Properties of Cr17 Stainless Steel Containing Niobium

Yuan Meiyi; Zhao Tiantian; Long Jiyin; Yang Yitao

doi:10.15980/j.tzzz.2022.01.014

Views : 0 下载量: 61 CSCD: 0

PDF
Export
Share
Collection
Album

Effects of Heat Treatment on Microstructure and Properties of Cr17 Stainless Steel Containing Niobium
Vol. 42, Issue 1, Pages: 68-72(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.01.014

扫描看全文

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 42(1):68-72(2022)
DOI：

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 42(1):68-72(2022) 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.