退火对Cr-Al铁素体不锈钢织构与塑性应变比的影响

纪小健; 李辉

doi:10.15980/j.tzzz.2019.01.004

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退火对Cr-Al铁素体不锈钢织构与塑性应变比的影响
Influence of Annealing Time on Texture and Plastic-strain Ratio Value of Cr-Al Ferritic Stainless Steel
2019年39卷第1期页码：12-14
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.01.004

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[1]纪小健,李辉.退火对Cr-Al铁素体不锈钢织构与塑性应变比的影响[J].特种铸造及有色合金,2019,39(01):12-14.

Ji Xiaojian, Li Hui. Influence of Annealing Time on Texture and Plastic-strain Ratio Value of Cr-Al Ferritic Stainless Steel[J]. Special Casting & Nonferrous Alloys, 2019,39(1):12-14.
[1]纪小健,李辉.退火对Cr-Al铁素体不锈钢织构与塑性应变比的影响[J].特种铸造及有色合金,2019,39(01):12-14. DOI： 10.15980/j.tzzz.2019.01.004.

Ji Xiaojian, Li Hui. Influence of Annealing Time on Texture and Plastic-strain Ratio Value of Cr-Al Ferritic Stainless Steel[J]. Special Casting & Nonferrous Alloys, 2019,39(1):12-14. DOI： 10.15980/j.tzzz.2019.01.004.

摘要

对Cr-Al铁素体不锈钢在退火过程中的微观织构演变进行了研究。运用EBSD技术表征了随退火时间的延长

再结晶行为和微观织构的演变规律

并用HKL Channel系统进行了量化分析;测试了塑性应变比r的变化规律。结果表明

大部分的再结晶行为发生在保温过程的前10min。当保温时间由2min延长至10min后

完全再结晶晶粒所占的比例由3.5%提高到89%

而在后续的保温过程中变化不大;退火时间短于10min时

以{hkl}<110>织构为主

大于10min后

{111}织构比例快速增加;退火时间为30min时

r值达到最大值

约为1.27

具有最优的成形性能。

Abstract

The texture evolution of Cr-Al ferritic stainless steel during annealing treatment was observed.The recrystallization behavior and texture evolution were characterized by EBSD technique and analyzed quantitatively using HKL Channel.The plastic-strain ratio r value was tested.The results indicate that most of the recrystallization process occurs with annealing time less than 10 min.The recrystallization fraction is increased from 3.5%to89% with annealing time from 2min to 10 min.When further holding treatment

the recrystallization behavior keeps stable.The texture is mainly{hkl}<110>type when annealing time is less than 10 min

and it is{111}<uvw>type with annealing time more than 10 min.The r vale reaches the peak value of 1.27 when annealing time is 30 min

exhibiting the desirable formability.