Fe-32 Mn-2Si-4Al TWIP钢退火织构和晶界特征的研究  

Annealing Texture and Grain Boundary Character Distributions of Fe-32Mn-2Si-4Al TWIP Steel

作　　者：苏钰[1,2] 符仁钰[1] 李麟[1] 何慎[3] 

机构地区：[1]上海大学材料学院,上海200072 [2]上海工程技术大学材料学院,上海201620 [3]宝钢研究院不锈钢研究所,上海201900

出　　处：《钢铁研究学报》2010年第2期22-27,共6页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50671061);上海市教委科研创新资助项目(09YZ368);上海市重点学科建设资助项目(J51402)

摘　　要：利用电子背散射衍射(Electron Back Scatter Diffraction-EBSD)技术,对不同退火温度下Fe-32Mn-2Si-4Al孪晶诱发塑性(Twining Induced Plasticity-TWIP)钢冷轧变形后退火再结晶组织的晶界特征、晶粒取向差、织构的变化进行研究。结果表明:随着退火温度的升高,TWIP钢中∑1CSL晶界含量减少,∑3CSL晶界增加,α-取向线和β-取向线密度总体上升,Goss{011}<100>、Copper{112}<111>密度都呈下降趋势,而Brass{011}<211>、S{123}<634>密度呈上升趋势。The grain boundary character distributions（GBCD）,the misorientation and the development of recrystallization texture in TWIP steel sheets were investigated by Electron Back Scatter Diffraction（EBSD）.The results indicate that with the increase in annealing temperature,∑1 coincidence grain boundary decreases and ∑3 coincidence grain boundary increases,the intensity of β-fiber and α-fiber increase totally.The intensity of Goss{011}100 and Cu{112}111 trend weaker,the intensity of S{123}634,and Brass{011}211 trend stronger with the increase in anealing temperature.

关 键 词：TWIP钢 晶界特征 织构 

分 类 号：TG142.7[一般工业技术—材料科学与工程]