全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

退火温度对含磷高强IF钢FeTiP析出行为的影响

DOI: 10.3969/j.issn.1005-3026.2014.10.009, PP. 1404-1407

Keywords: 高强IF钢,退火温度,FeTiP,晶体结构,织构

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过模拟罩式退火过程,研究了含磷高强IF钢中FeTiP粒子在退火过程中的析出行为,利用透射电镜选区衍射并结合能谱分析,确定了FeTiP的晶体结构.结果表明:650℃退火试样中只含有少量FeTiP,随着退火温度的升高,FeTiP数量明显增加,其大量分布于晶内及晶界处,且晶界处析出物尺寸明显大于晶内析出物.当退火温度升高到800℃时,FeTiP完全溶解,因此在整个基体无法检测到FeTiP.FeTiP的溶解消除了其对再结晶的阻碍作用,最终获得高强度{111}取向再结晶组织,从而提高高强IF钢成形的性能.FeTiP具有斜方晶体结构,且析出物中Nb元素的存在(含Nb原子可表达为Fe(Ti,Nb)P)不会引起晶体结构的改变.

References

[1]  [1]郭卫民.铁素体区轧制含磷高强IF钢组织与深冲性能的研究[D].山东:山东大学,2011.(Guo Weimin.Study on microstructures and deepdrawablities of ferritic rolle Padded high strength IF steel sheets[D].Shandong:Shandong University,2011.)
[2]  Ghosh P,Ray R K,Ghosh C,et al.Comparative study of precipitation behavior and texture formation in continuously annealed Ti and Ti+Nb added interstitialfree highstrength steels[J].Scripta Materialia,2008,58(11):939-942.
[3]  Ghosh P,Ray R K,Bhattacharjee D.Determination of the crystal structure of FeTiPtype precipitates in a few interstitialfree highstrength steels[J].Scripta Materialia,2007,57(3):241-244.
[4]  Ramos A S,Sandim H R Z,Hashimoto T M.FeNbP in ultralow carbon Nbadded steel containing high P[J].Materials Characterization,2000,45(3):171-174.
[5]  Ivanov A V,Zolensky M E,Saito A,et al.Florenskyite,FeTiP,a new phosphide from the Kaidun meteorite[J].American Mineralogist,2000,85(7/8):1082-1086.
[6]  Shi J,Wang X.Comparison of precipitate behaviors in ultralow carbon,titaniumstabilized interstitial free steel sheets under different annealing processes[J].Journal of Materials Engineering and Perform,1999,8(6):641-648.
[7]  Banerjee K,Verma A K,Venugopalan T.Improvement of drawability of titaniumstabilized interstitialfree steel by optimization of process parameters and texture[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2008,39(6):1410-1425.
[8]  Ghosh P,Ghosh C,Ray R K.Thermodynamics of precipitation and textural development in batchannealed interstitialfree highstrength steels[J].Acta Materialia,2010,58(11):3842-3850.
[9]  王昭东,郭艳辉,赵忠,等.深应用铁素体区热轧工艺开发超低碳热轧深冲板[J].东北大学学报:自然科学版,2005,26(8):747-750.(Wang Zhaodong,Guo Yanhui,Zhao Zhong,et al.Developing an ultralow carbon deepdrawing sheet steel by ferrite hot rolling process[J].Journal of Northeastern University:Natural Science,2005,26(8):747-750.)
[10]  Hutchinson W B.Development and control of annealing textures in low carbon steels[J].International Metals Review,1981,29(1):25-42.一位数()
[11]  二位数()

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133