Phase Transformation and Structure of Steel WL510 for Automobile Beam during Continuous Cooling

王生朝; 赵刚; 鲍思前

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Phase Transformation and Structure of Steel WL510 for Automobile Beam during Continuous Cooling

更新时间：2026-01-21

- Phase Transformation and Structure of Steel WL510 for Automobile Beam during Continuous Cooling
- Special Steel Vol. 33, Issue 6, Pages: 56-58(2012)
- 作者机构：
  
  1. 湖南工业大学冶金工程学院,株洲,412000
  2. 武汉科技大学材料与冶金学院,武汉,430081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 May 2012，
  
  Online First：30 September 2022，
  
  Published：30 September 2012
- 稿件说明：
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王生朝, 赵刚, 鲍思前. Phase Transformation and Structure of Steel WL510 for Automobile Beam during Continuous Cooling[J]. Special Steel, 2012, 33(6): 56-58.
DOI：

王生朝, 赵刚, 鲍思前. Phase Transformation and Structure of Steel WL510 for Automobile Beam during Continuous Cooling[J]. Special Steel, 2012, 33(6): 56-58. DOI：

摘要

通过Thermecmastor-Z热模拟试验机研究了WL510钢(/%:0.090C、0.13Si、1.45Mn、0.005S、0.019P、0.040Al、0.020Ti、0.030Nb)粗轧后板坯(36 mm×1 500 mm)在1～36℃/s连续冷却条件下的相变和组织的变化

并用热膨胀法测定了试验钢连续冷却转变(CCT)曲线。结果表明

试验钢WL510在1～23℃/s低冷却速度下

主要形成多边形铁素体和少量珠光体;当冷却速度≥30℃/s时

主要组织为细针状铁素体、少量细珠光体和岛状马氏体/奥氏体(M/A)随着冷却速度的增加

试验钢组织明显变细。

Abstract

The phase transformation and structure of rough rolled slab (36 mm x 1 500 mm) of steel WL510 (/% : 0. 090C

0. 13Si

1.45Mn

0. 005S

0. 019P

0. 040Al

0. 020Ti

0. 030Nb) during continuous cooling with 1 〜36 ℃/s have been studied by a Thermecmastor-Z thermal mechanical simulator

and the continuous cooling transformation (CCT) curves are measured by thermal dilatometer method. Results show that at low cooling rate 1 ~ 23 °C/s

polygonal ferrite and minor pearlite are mainly formed in test steel WL510； as the cooling rate ≥30 ℃/s

the main structure in test steel is fine acicular ferrite

minor fine pearlite and martensite/austenite islands. With increasing cooling rate

the structure of test steel is finer.

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