ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2007, Vol. 28 ›› Issue (4): 21-23.

Previous Articles     Next Articles

Influence of Original Structure on Equal Channel Angular Pressing Deformation of 304L Extra-Low Carbon Stainless Steel

Deng Bo1,2， Yang Gang2，  Zong Yi1，  Zhang Lingyi1,2，  Wang Limin2 ， Guo Fuqiang1,2   

  1. 1 Faculty of Materials and Metallurgy, Kunming University of Science and Technology, Kunming 650093；
    2 Central Iron and Steel Research Institute, Beijing 100081
  • Received:2006-12-30 Online:2007-07-01 Published:2023-01-05

原始组织对304L超低碳奥氏体不锈钢等径角挤压变形的影响

邓波1，2， 杨钢2， 钟毅1， 张凌义1，2， 王立民2， 郭富强1，2   

  1. 1昆明理工大学材料与冶金工程学院，昆明650093 ；
    2钢铁研究总院，北京100081
  • 作者简介:邓波(1983-),男，硕士研究生，冶金新材料制备与加工。
  • 基金资助:
    国家高新技术“863”研究发展计划基金资助项目 (2002AA302501)

PDF

Abstract: The 304L extra-low carbon stainless steel was melted by a 25 kg vacuum induction furnace. The structure evolution of as cast structure of steel after 1 pass equal channel angular pressing (ECAP) at 200 ℃ and the structure of steel with one pass ECAP of as cast structure + 1 150℃ 1.5 h, AC treatment (solid solution structure) then ECAP have been studied by transmission electron microscopy. Results showed that the main deformation mechanism for as cast structure of 304L steel during 1 pass ECAP was slipping with a small number of twinning deformation； while during ECAP of solid solution structure of 304L steel the amount of twinning deformation obviously increased, the slipping and twinning deformation produced together to fine original grain.

摘要： 304L超低碳奥氏体不锈钢由25kg真空感应炉冶炼,用透射电镜(TEM)研究了该钢铸态组织200℃等径角挤压变形(ECAP)后组织演变和铸态组织1道次ECAP+1150℃1.5 h,AC处理(固溶组织)再进行ECAP后的组织。结果表明,304L钢铸态组织1道次ECAP变形过程中主要的变形机制为滑移变形,同时出现少量的孪晶变形;304L钢固溶组织在ECAP变形过程中孪晶变形数量急剧增加,孪晶和滑移共同进行,细化原始晶粒组织演变。

关键词: 304L奥氏体不锈钢, 等径角挤压变形, 组织

Website Copyright © Special Steel Supported by:Beijing Magtech