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材料研究学报  2012, Vol. 26 Issue (1): 13-20    
  研究论文 本期目录 | 过刊浏览 |
超快速退火对Nb+Ti--IF钢组织和织构的影响
侯自勇, 许云波, 吴迪
东北大学轧制技术及连轧自动化国家重点实验室 沈阳 110819
Microstructure and Texture of Nb+Ti–IF Steels After Ultra–short Annealing
HOU Ziyong, XU Yunbo, WU Di
The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819
引用本文:

侯自勇 许云波 吴迪. 超快速退火对Nb+Ti--IF钢组织和织构的影响[J]. 材料研究学报, 2012, 26(1): 13-20.
, , . Microstructure and Texture of Nb+Ti–IF Steels After Ultra–short Annealing[J]. Chin J Mater Res, 2012, 26(1): 13-20.

全文: PDF(1112 KB)  
摘要: 研究了超快速退火对一种冷轧变形量为94.2%的Nb+Ti--IF钢的微观组织和织构的影响。结果表明: 超快速退火(升温速度为300℃/s)提高了钢的再结晶完成温度, 整个再结晶退火可在短至0.41 s内完成。与普通退火(升温速度为20℃/s)后钢的再结晶组织相比, 超快速退火处理后晶粒平均尺寸由12.98 μm细化到10.12 μm, 晶粒长大速度由~3 μm/s提高到~23 μm/s, 且再结晶晶粒内存在大量缠结位错。在极短时间内, 超快速退火再结晶织构仍以均匀、锋锐的{111}//ND有利深冲性能的γ织构为主, 且避免了其它α织构的生成, 有利于使退火板具有良好的成形性能。
关键词 金属材料Nb+Ti-IF钢超快速退火晶粒尺寸织构    
Abstract:The effect of ultra–short annealing process on microstructural and textural evolutions associated with an Nb+Ti–IF steel sheet with cold reduction of 94.2% was investigated. The results show that the well–recrystallized samples have been obtained in several seconds during the ultra short annealing cycle with higher heating rate up to 300℃/s. In the fully recrystallized condition, the finer grain size and the higher growth velocity, 10.12 μm and ∼23 μm/s, respectively, can be found in an ultra–short annealing cycle than that in the conventional annealing with heating rate of 20℃/s, 12.98 μm and ∼3 μm/s, respectively, while also amounts of dislocations in recrystal grain have been observed. The characteristic more homogeneous {111} deep drawing fiber of cold rolled IF steels and other fiber texture
nearby α skeleton absent, which is potential for high strength steel with deep drawing, were observed in an annealing treatment as short as 0.41 s.
Key wordsmetallic materials    Nb+Ti–IF steel    ultra–short annealing    grain size    texture
收稿日期: 2011-10-17     
ZTFLH: 

TG142

 
基金资助:

国家自然科学基金(50734001, 50971039)和国家重点基础研究发展计划2011CB606306资助项目。

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