Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB

刘新权; 杨钢; 吴兴惠; 项金钟; 杨沐鑫

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Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB

更新时间：2026-01-21

- Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB
- Special Steel Vol. 31, Issue 5, Pages: 67-70(2010)
- 作者机构：
  
  1. 云南大学物理科学技术学院,昆明,650091
  2. 钢铁研究总院结构材料研究所,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：19 May 2010，
  
  Online First：12 November 2022，
  
  Published：12 November 2010
- 稿件说明：
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刘新权, 杨钢, 吴兴惠, et al. Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB[J]. Special Steel, 2010, 31(5): 67-70.
DOI：

刘新权, 杨钢, 吴兴惠, et al. Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB[J]. Special Steel, 2010, 31(5): 67-70. DOI：

摘要

采用X射线衍射、光学显微镜、扫描电镜和透射电镜研究了620℃长期时效对1100℃油淬+720℃高温回火的新型铁素体耐热钢1Cr11Co3W3MoVNbNB(%:0.10C、11.08Cr、3.20Co、2.54W、0.52Ni、0.15Mo、0.09Nb、0.021N、0.014B)的显微组织和力学性能的影响。结果表明

620℃ 2000 h时效下

时效时间对室温及620℃力学性能影响不大

时效过程中主要有M

、Nb(CN)和M

三类析出相

板条亚结构没有明显的变化

显微组织稳定;固溶的Mo、W、V主要在时效过程中"脱溶"进入析出相

Nb、B主要在高温回火以及时效初期"脱溶"。

Abstract

The effect of long-term aging at 620 ℃ on structure and mechanical properties of a new ferrite heat resistant steel 1Cr11Co3W3MoVNbNB (%： 0.10C

11.08Cr

3.20Co

2.54W

0.52Ni

0.15Mo

0.09Nb

0.21N

0.014B) oil-quenched at 1100 °C + high temperature tempered at 720 ℃. has been studied by using X-ray diffraction method

optical

scanning electron and transmission electron microscope. Results show that with aging at 620 ℃ for 2000 h

the aging time isn't obvious effect on the mechanical properties of the steel at ambient and at 620 °C ; during aging the main precipitated phases are M

Nb(CN) and M

and the structure of steel is stable and the lath sub-structure has not changed obviously; The elements Mo

W and V in solid s

olution mainly precipitate into precipitated phase in aging process and the elements Nb and B mainly precipitate in high temperature tempering and in initial period of aging.

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