摘要
通过光学显微镜、X射线衍射技术和EBSD技术研究了退火温度对Fe-Mn-TWIP钢的微观结构的影响,结果表明冷轧态TWIP钢完成退火再结晶后,组织为全部的奥氏体,随着退火温度的提高退火晶粒的尺寸增大,在1000℃时达到了30～50μm。织构分析表明,当退火温度低于700℃时,受冷轧织构的影响,晶粒取向变化较小;而在高于700℃退火时,冷轧时的α取向-线织构痕迹逐渐减小,面织构的比率增加。取向分析表明,此时材料中存在较多的60°〈111〉孪晶的大角度晶界,由于孪晶成对称关系,导致材料的织构较弱。
Influence of annealing temperature on microstructure of a Fe-Mn twinning induced plasticity（TWIP） steel was investigated by optical microscope,XRD and EBSD technique.The results show that microstructure of the Fe-Mn-TWIP steel consists of austenite after annealing recrystallization.Grain size of the steel increases with increase of annealing temperature,and grain size is 30-50 μm when annealing temperature is 1000 ℃.When annealing temperature is lower than 700 ℃,the texture of the annealed steel inherits that of the steel after cold-rolling.While annealing temperature is higher than 700 ℃,α-fiber texture of the cold-rolled steel weakens gradually,and occupancy of surface texture increases.There are many 60°〈111〉twinnings and because of symmetrical characteristic of the twinnings,texture of the steel annealed at higher than 700 ℃ is weak.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2011年第3期115-119,共5页
Transactions of Materials and Heat Treatment
基金
河北科技大学校立科研基金(XL201001)
关键词
退火
TWIP钢
冷轧织构
再结晶
孪晶
annealing
TWIP steel
cold-rolled texture
recrystallization
twinning
