Influence of Annealing and Flattening Process on Mechanical Properties of Steel 08Al Cold-Rolled Thin Sheet for Clad Wire

裴润奇

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Influence of Annealing and Flattening Process on Mechanical Properties of Steel 08Al Cold-Rolled Thin Sheet for Clad Wire

更新时间：2026-01-21

- Influence of Annealing and Flattening Process on Mechanical Properties of Steel 08Al Cold-Rolled Thin Sheet for Clad Wire
- Special Steel Vol. 36, Issue 6, Pages: 49-52(2015)
- 作者机构：
  
  太钢不锈钢股份有限公司冷轧硅钢厂,太原,030003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：08 June 2015，
  
  Online First：15 August 2022，
  
  Published：15 August 2015
- 稿件说明：
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裴润奇. Influence of Annealing and Flattening Process on Mechanical Properties of Steel 08Al Cold-Rolled Thin Sheet for Clad Wire[J]. Special Steel, 2015, 36(6): 49-52.
DOI：

裴润奇. Influence of Annealing and Flattening Process on Mechanical Properties of Steel 08Al Cold-Rolled Thin Sheet for Clad Wire[J]. Special Steel, 2015, 36(6): 49-52. DOI：

摘要

试验研究了退火工艺(820℃连续退火

670℃罩式退火和730℃罩式退火)和平整延伸率(0.8%

1.2%和1.5%)对包芯线用08Al钢(0.07%C

0.05%Al

0.0040%N)0.4 mm冷轧薄带组织和性能的影响。结果表明

连续退火薄带组织为铁素体+珠光体

屈服强度(300 MPa)和屈强比(0.78)高

延伸率(35%)较低

塑性差

不适合压制成形;730℃罩式退火薄带晶粒粗大

不均匀

成形性能差;670℃罩式退火薄带组织为再结晶铁素体和呈点链状的游离渗碳体

屈服强度(252 MPa)和屈强比(0.69)低、延伸率(48%)较高

成形性能好;随平整延伸率的增加

屈服强度和屈强比先降低后升高

延伸率下降。合适的平整率应控制在1.2%左右

成形性能最佳

应用效果良好。

Abstract

The influence of annealing processes ( continuous annealing at 820 ℃

bell type annealing at 670 °C and at 730 °C ) and flattening elongation (0.8%

1.2% and 1.5% ) on structure and mechanical properties of 0.4 mm cold- rolled thin sheet of 08Al steel (0. 07% C

0.05% Al

0.004 0% N) for clad wire has been tested and studied. Results show that the structure of continuous-annealed thin sheet is ferrite + pearlite

it has higher yield strength (300 MPa) and strength-yield ratio (0. 78)

lower elongation (35% ) and poor plasticity

not suitable to press and shape; of bell type annealed at 730 °C the grains are coarse and uneven with poor shaping performance ； of bell type annealed at 670 °C the structure of thin sheet is recrystallized ferrite and particle- or chain-shaped free cementite

it has lower yield strength (252 MPa) and strength-yield ratio ( 0. 69)

higher elongation (48% ) and nice shaping performance; with increasing flattening elongation the yield strength and strength-yield ratio decrease first and then increase

and the elongation decreases

the suitable flatting elongation is about 1. 2% with nice shaping performance and better application results.

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