Effects of Ultra-Fast Cooling Process on Mechanical Properties of 14.8 mm Hot-Rolled Strip Coil of X100 Pipeline Steel

周峰; 吴开明; 陈建新

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Effects of Ultra-Fast Cooling Process on Mechanical Properties of 14.8 mm Hot-Rolled Strip Coil of X100 Pipeline Steel

更新时间：2026-01-21

- Effects of Ultra-Fast Cooling Process on Mechanical Properties of 14.8 mm Hot-Rolled Strip Coil of X100 Pipeline Steel
- Special Steel Vol. 36, Issue 2, Pages: 64-67(2015)
- 作者机构：
  
  1. 高性能钢铁材料及其应用湖北省协同创新中心，武汉科技大学国际钢铁研究院,武汉,430081
  2. 华菱涟源钢铁有限公司,娄底,417009
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：12 October 2014，
  
  Online First：24 August 2022，
  
  Published：24 August 2015
- 稿件说明：
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周峰, 吴开明, 陈建新. Effects of Ultra-Fast Cooling Process on Mechanical Properties of 14.8 mm Hot-Rolled Strip Coil of X100 Pipeline Steel[J]. Special Steel, 2015, 36(2): 64-67.
DOI：

周峰, 吴开明, 陈建新. Effects of Ultra-Fast Cooling Process on Mechanical Properties of 14.8 mm Hot-Rolled Strip Coil of X100 Pipeline Steel[J]. Special Steel, 2015, 36(2): 64-67. DOI：

摘要

试验研究终轧温度790~850℃

轧后用超快冷与层流冷却相结合

40~60℃/s冷令却至580℃

卷取温度380℃时X100管线钢(/%:0.05C

0.25Si

1.97Mn

0.008F

0.002S

0.26Cu

0.36Cr

0.38Ni

0.22Mo

0.03V

0.02Ti

0.09Nb

0.029Als)14.8 mm热轧带卷的组织和力学性能。结果表明

该钢带卷的晶粒度为13.5级

带状组织0~0.5级

组织为粒状贝氏体+马氏体

并含有0.2~0.8 μm马氏体/奥氏体岛

-20℃冲击功265~277 J

具有良好的综合力学性能

满足《天然气输送管道X100螺旋缝埋弧焊管用热轧板卷技术条件》标准要求。

Abstract

The structure and mechanical properties of 14.8 mm hot-rolled strip coil of X100 pipeline steel (/% : 0.05C

0.25Si

1.97Mn

0.008P

0.002S

0.26Cu

0.36Cr

0.38Ni

0.22Mo

0.03V

0.02Ti

0.09Nb

0.029Als) with finishing rolling at 790-850 °C

after rolling combined ultra-fast cooling and laminar flow cooling with rate 40-60 °C/s cooling to 580 °C and coiling at 380

°C

are tested and studied. Results show that the grain size rating of strip coil is 13.5

the banded structure rating is 0-0.5

the structure is granular bainite + martensite and containing 0.2-0.8 μm martensite/austenite island

the impact energy at -20 °C is 265-277 J and it has better comprehensive mechanical properties to meet the requirement of standard " Technical Specification of Hot Rolled Plate Used for Manufacturing Grade X100 SAWL Pipe f

or Gas Pipeline ".

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