Behavior of Precipitation in Ф47 mm x 8 mm Tube of Heat Resistant Steel TP310HCbN during Rupture Test at 700℃

方旭东; 王岩; 范光伟; 夏焱; 王志斌; 韩培德

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Behavior of Precipitation in Ф47 mm x 8 mm Tube of Heat Resistant Steel TP310HCbN during Rupture Test at 700℃

更新时间：2026-01-21

- Behavior of Precipitation in Ф47 mm x 8 mm Tube of Heat Resistant Steel TP310HCbN during Rupture Test at 700℃
- Special Steel Vol. 36, Issue 3, Pages: 61-63(2015)
- 作者机构：
  
  1. 太原钢铁(集团)有限公司1先进不锈钢材料国家重点实验室
  2. 技术中心,太原,030003
  3. 太原理工大学材料科学与工程学院,太原,030003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：29 December 2014，
  
  Online First：18 August 2022，
  
  Published：18 August 2015
- 稿件说明：
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方旭东, 王岩, 范光伟, et al. Behavior of Precipitation in Ф47 mm x 8 mm Tube of Heat Resistant Steel TP310HCbN during Rupture Test at 700℃[J]. Special Steel, 2015, 36(3): 61-63.
DOI：

方旭东, 王岩, 范光伟, et al. Behavior of Precipitation in Ф47 mm x 8 mm Tube of Heat Resistant Steel TP310HCbN during Rupture Test at 700℃[J]. Special Steel, 2015, 36(3): 61-63. DOI：

摘要

通过扫描电镜、透射电镜、能谱分析和硬度试验等方法分析了TP310HCbN耐热钢（/%:0.07C，0.39Si，1.20Mn，25.05Cr，20.40Ni，0.42Nb，0.266N）Ф47mm×8 mm冷轧管经1120~1160℃固溶处理后在700℃ 0~19 570 h持久试验时的析出相。结果表明

TP310HCbN耐热钢700℃95~220 MPa持久试验时间在0~1000 h时

随时间增加

硬度HV值由237增至255

当持久时间超过1 000 h

硬度趋于平稳;随着持久时间增加

该钢晶内析出物由颗粒状转变为棒状

并存在大量与位错相互作用的蠕虫状NbCrN析出物;生产的TP310HCbN耐热钢700℃-100 000外推持久强度为63.65 MPa满足标准要求。

Abstract

The precipitated phases in Ф47 mm x 8 mm cold rolled tube of heat resistant steel TP310HCbN (/% : 0. 07C

0. 39Si

1. 20Mn

25. 05Cr

20.40Ni

0.42Nb

0.266N) solid-solution-treated at 1 120 ~ 1 160 °C then rupture test at 700 °C for 0 ~19 570 h are analyzed by the test method including SEM

TEM

energy spectrum analysis and hardness test. Results show that as the heat resistant steel TP310HCbN rupture test with 95 ~220 MPa at 700 °C for 0 ~ 1 000 h

with increasing test time

the hardness HV value increases from 237 to 255

as that for more than 1 000 h

the hardness value is no change； with increasing test time

the intragranular precipitates in steel change from granular type to rod type

and there is a lot of wormlike NbCrN precipitates which interacts with dislocation ； the extrapolated rupture strength of produced test heat resistant steel TP310HCbN at 700 ℃ for 100 000 h is 63. 65 MPa to meet the requirement of standard.

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