Grain Refinement Mechanism of 00Cr19Ni10 Austenite by Hot Equal Channel Angular Pressing

王昌; 杨钢; 王立民; 高永亮; 钟海林

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Grain Refinement Mechanism of 00Cr19Ni10 Austenite by Hot Equal Channel Angular Pressing

更新时间：2026-01-21

- Grain Refinement Mechanism of 00Cr19Ni10 Austenite by Hot Equal Channel Angular Pressing
- Special Steel Vol. 28, Issue 2, Pages: 10-12(2007)
- 作者机构：
  
  钢铁研究总院结构材料研究所,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 August 2006，
  
  Online First：09 March 2023，
  
  Published：09 March 2007
- 稿件说明：
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王昌, 杨钢, 王立民, et al. Grain Refinement Mechanism of 00Cr19Ni10 Austenite by Hot Equal Channel Angular Pressing[J]. Special Steel, 2007, 28(2): 10-12.
DOI：

王昌, 杨钢, 王立民, et al. Grain Refinement Mechanism of 00Cr19Ni10 Austenite by Hot Equal Channel Angular Pressing[J]. Special Steel, 2007, 28(2): 10-12. DOI：

摘要

φ8 mm 00Cr19Ni10不锈钢(%:0.025C、18.75Cr、10.96Ni)经700℃、挤压速度9mm/s、8道次等通道挤压后获得150~350nm 超细晶组织。通过光学显微镜，扫描和透射电镜，X-射线衍射，分析了在等通道挤压变形过程钢的微观组织演变，提出晶粒细化的位错、孪晶和动态再结晶机制，研究发现在1～4道次以孪晶细化机制为主，5～8道次以动态再结晶细化机制为主。

Abstract

150~350 nm super finc grain structure of φ8 mm round stainless steel 00Cr19Ni10-0.025C

18.75Cr

10.96Ni has been obtained by 8 pass equal channel angular pressing(ECAP)with extrusion speed 9 mm/s at 700 ℃.The structure evolution of steel in ECAP was analyzed by optical microscope

scanning and transmission electron microscope and X-ray diffraction method. The grain refinement mechanism - dislocation

twins and dynamic recrystallization is proposed and the research discovers that the twins is main grain refining mechanism in 1～4 pass and the dynamic recrystallization is main refining mechanism in 5~8 pass.

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