| SAF 2205双相不锈钢织构与冲压特性 |
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| 作者姓名： | 陈雨来 荀晓晨 李静媛 |
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| 作者单位： | 北京科技大学冶金工程研究院,北京,100083;北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | “十二五”国家科技支撑计划资助项目(2015AA03A502)国家自然科学基金资助项目(51174026) |
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| 摘 要： | 研究SAF 2205双相不锈钢冷轧退火板的冲压特性以及冷轧和退火织构对其冲压性能的影响.实验钢冷轧退火板表现出较差的深冲性能和明显的45°制耳,其r平均值和Δr值分别为0.7和-0.27,这主要与其在冷轧及退火后形成的织构有关.ODF图显示,退火后SAF 2205双相不锈钢中铁素体相未形成γ纤维再结晶织构,仍然为分散的α纤维织构.实验钢中铁素体相的织构强度明显高于奥氏体相,其对钢板成形性的影响更显著,即其各种〈110〉退火织构组分均不利于实验钢r平均值的提高,并且使得Δr<0.此外,奥氏体相的{110}〈001〉织构也对钢板成形性能产生一定程度的影响.
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| 关 键 词： | 不锈钢 织构 冲压 成形性 制耳 |
| 收稿时间： | 2015-03-26 |
Texture and stamping properties of SAF 2205 duplex stainless steel |
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| Affiliation: | 1. Metallurgical Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China;2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The effects of cold rolling and annealing texture on the drawability of SAF 2205 duplex stainless steel were investigated. It is found that the deep drawability of SAF 2205 duplex stainless steel is poor with an average r value of 0.7 and the earing appears at 45° with a Δr value of -0.27,which is related with the texture formed during cold rolling and annealing. ODF results show that no γ fiber recrystallization texture forms in ferritic phase and the scattered α fiber texture still remains after annealing. Moreover,the ferritic texture exhibits a higher intensity than the austenitic one,thus it has more significant effect on the formability of the tested steel. It means that various components of the 〈110〉texture cause low average r values and make Δr<0. Furthermore,the {110}〈001〉texture of austenite exerts some effect on the formability of the sheet. |
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