东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (9): 1283-1286.DOI: -

• 论著 • 上一篇    下一篇

热处理工艺对TWIP钢组织性能的影响

王书晗;刘振宇;王国栋;梁高飞;   

  1. 东北大学轧制技术与连轧自动化国家重点实验室;宝钢集团有限公司宝钢技术中心;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-09-15 发布日期:2013-06-22
  • 通讯作者: Wang, S.-H.
  • 作者简介:-
  • 基金资助:
    教育部新世纪优秀人才支持计划项目(NCET-04-0278);;

Effect of heat treatment process on microstructure and mechanical properties of TWIP steels

Wang, Shu-Han (1); Liu, Zhen-Yu (1); Wang, Guo-Dong (1); Liang, Gao-Fei (2)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; (2) Technology Center of Baosteel, Advanced Technology Institute, Baoshan Iron and Steel Group Co. Ltd., Shanghai 201900, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-09-15 Published:2013-06-22
  • Contact: Wang, S.-H.
  • About author:-
  • Supported by:
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摘要： 对3种不同成分的TWIP钢(Fe-25Mn-4Si-2Al,Fe-30Mn-4Si-2Al,Fe-30Mn-3Si-3Al)进行热轧后的热处理实验,结果表明,增加固溶处理的保温时间,可提高TWIP钢的延伸率,而强度的变化并不明显.从晶界的角度分析了性能变化的原因:增加固溶处理的保温时间,有利于生成退火孪晶,不但增加退火孪晶界的面积,也有利于增加其他特殊晶界(CSL晶界)的数量.CSL晶界对材料的抗晶间腐蚀、断裂和蠕变强度的提高均有有益的作用,因此,通过控制TWIP钢的热处理工艺来提高原始组织中特殊晶界的含量,可以提高TWIP钢的强韧性.

关键词: TWIP钢, 热处理工艺, 孪晶, CSL晶界, 组织性能

Abstract: The investigation of the solution treatment of hot-rolled TWIP steel of three different compositions (Fe-25Mn-4Si-2Al, Fe-30Mn-4Si-2Al and Fe-30Mn-3Si-3Al) revealed that prolonging the temperature holding time can increase the elongation with no obvious change found in strength. Because prolonging the holding time benefits both the generation of more annealing twins to increase their boundary areas and the increase in the number of CSL boundaries which are favorable for the resistance to intergranular corrosion, fracture and creep. Therefore, the mechanical properties especially the toughness of TWIP steels can be improved by way of controlling its heat treatment process to increase the number of CSL boundaries in original structure.

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