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材料导报  2023, Vol. 37 Issue (11): 21110100-7    https://doi.org/10.11896/cldb.21110100
  金属与金属基复合材料 |
终轧温度对2024铝合金晶间腐蚀和力学性能的影响
欧阳祚琼, 罗兵辉, 邓攀, 莫文锋, 柏振海
中南大学材料科学与工程学院,长沙 410083
Effect of Final Rolling Temperature on Intergranular Corrosion and Mechanical Properties of 2024 Aluminum Alloy
OUYANG Zuoqiong, LUO Binghui, DENG Pan, MO Wenfeng, BAI Zhenhai
School of Materials Science and Engineering, Central South University, Changsha 410083, China
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摘要 对均匀化态2024铝合金进行不同终轧温度的热轧处理,经固溶后再进行为期4 d的自然时效。通过背散射电子衍射(EBSD)、X射线衍射(XRD)、扫描电子显微镜(SEM)和电化学实验研究了终轧温度对2024铝合金力学性能和晶间腐蚀行为的影响。结果表明,轧态2024铝合金内存在剪切织构和少量再结晶织构,而固溶后出现了部分典型轧制织构。终轧温度影响合金组织和织构变化。终轧温度较低(207 ℃)时合金的平均晶粒尺寸和平均Schmid因子小,强度高;终轧温度较高(280 ℃)时合金小角度晶界和{111}面织构占比高,具有较大Schmid因子的织构含量少,抗晶间腐蚀性能优良。
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欧阳祚琼
罗兵辉
邓攀
莫文锋
柏振海
关键词:  2024铝合金  终轧温度  织构  晶间腐蚀    
Abstract: The homogenized 2024 aluminum alloys were hot rolled at different final rolling temperatures, and they were naturally aged for 4 days after solid solution treatment. The effects of final rolling temperature on the mechanical properties and intergranular corrosion behavior of 2024 aluminum alloy were investigated by electron backscatter diffraction (EBSD), X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemistry tests. The results show that there are shear textures and a small amount of recrystallization texture in rolled 2024 aluminum alloy, while some typical rolling textures appear after solid solution. The final rolling temperature affects the structure and texture changes of the alloy. When the final rolling temperature is low (207 ℃), the average grain size of the alloy is small, the average Schmid factor is low, and the strength is high; when the final rolling temperature is high (280 ℃), the proportion of low angle grain boundary and {111} plane texture is high, the texture content with large Schmid factor is small, and the intergranular corrosion resistance is excellent.
Key words:  2024 aluminum alloy    final rolling temperature    texture    intergranular corrosion
出版日期:  2023-06-10      发布日期:  2023-06-19
ZTFLH:  TB31  
基金资助: 军工配套项目(412100008)
通讯作者:  罗兵辉,通信作者,中南大学材料科学与工程学院教授、博士研究生导师、中国物理学会固体内耗与力学谱专业委员会委员。2006年11月获中南大学材料物理博士学位。主持二十余项科研项目,在国内外知名学术刊物上发表论文100余篇,其中多篇被多国知名材料科学学者引用。主要从事先进金属结构-功能材料理论研究及材料研制开发,在高强、高韧材料研究、耐腐蚀材料研究、先进复合材料及高阻尼材料研制方面做了大量工作。   
作者简介:  欧阳祚琼,2019年6月于东北大学获得工学学士学位。现为中南大学材料科学与工程学院硕士研究生,在罗兵辉教授的指导下进行研究。主要从事2024铝合金组织及性能研究。
引用本文:    
欧阳祚琼, 罗兵辉, 邓攀, 莫文锋, 柏振海. 终轧温度对2024铝合金晶间腐蚀和力学性能的影响[J]. 材料导报, 2023, 37(11): 21110100-7.
OUYANG Zuoqiong, LUO Binghui, DENG Pan, MO Wenfeng, BAI Zhenhai. Effect of Final Rolling Temperature on Intergranular Corrosion and Mechanical Properties of 2024 Aluminum Alloy. Materials Reports, 2023, 37(11): 21110100-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21110100  或          http://www.mater-rep.com/CN/Y2023/V37/I11/21110100
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