Effect of Tempering on Size and Orientation of Grain in Ultra-Fine Grain Bainite Steel

陈庆丰; 关云; 陈邦文; 汪福成; 刘昌明; 严翔

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Effect of Tempering on Size and Orientation of Grain in Ultra-Fine Grain Bainite Steel

更新时间：2026-01-21

- Effect of Tempering on Size and Orientation of Grain in Ultra-Fine Grain Bainite Steel
- Special Steel Vol. 27, Issue 6, Pages: 52-53(2006)
- 作者机构：
  
  武钢技术中心,武汉,430080
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 June 2006，
  
  Online First：02 March 2023，
  
  Published：02 March 2006
- 稿件说明：
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陈庆丰, 关云, 陈邦文, et al. Effect of Tempering on Size and Orientation of Grain in Ultra-Fine Grain Bainite Steel[J]. Special Steel, 2006, 27(6): 52-53.
DOI：

陈庆丰, 关云, 陈邦文, et al. Effect of Tempering on Size and Orientation of Grain in Ultra-Fine Grain Bainite Steel[J]. Special Steel, 2006, 27(6): 52-53. DOI：

摘要

用50kg真空感应炉冶炼的钢锭

经1150℃开轧

两阶段控制轧制

830℃终轧成12mm钢板

驰豫27s

720℃进水快冷(冷却速率30～35℃/s)后

超低碳贝氏体钢(成分%:0.023C、1.63Mn、0.52Cu、0.25Mo、0.055(Nb+Ti)、0.0011B)具有板条贝氏体+少量粒状贝氏体和不规则铁素体的复合组织

贝氏体束团尺寸为3～5μm

块状和不规则铁素体尺寸为1～2.5μm。650℃和700℃回火对贝氏体晶粒取向无显著影响。

Abstract

With 50 kg vacuum induction furnace melted ingot

breakdown at 1150 ℃ and two stage control rolling

12 mm plate finishing rolling at 830 ℃

then relaxation for 27 s

water cooling at 720 ℃ with cooling rate 30~35 ℃/s

the ultra-low-carbon bainite steel-0.023C

1.63Mn

0.52Cu

0.25Mo

0.055(Nb+Ti)

0.0011B had compound structure consisting of lath bainite + minor granular bainite

and irregular ferrite. The bainite bunch colony size was 3~5 μm and the lump and irregular ferrite size was1~2.5 μm. Tempering at 650 ℃ and 700℃ weren't obvious influence on bainite grain orientation.

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