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合金元素及制备工艺对1XXX系铝合金组织及性能的影响
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1.浙江大学 材料科学与工程学院,浙江 杭州 310027;2.永杰新材料股份有限公司,浙江 杭州 311222;3.浙江大学 航空航天学院,浙江 杭州 310027

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Fundamental Research Funds for the Central Universities (2018XZZX001-05)


Effect of Alloying Elements and Processing Parameters on Microstructure and Properties of 1XXX Aluminium Alloys
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1.School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;2.Yong Jie New Material Co. Ltd., Hangzhou 311222, China;3.School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China

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Fundamental Research Funds for the Central Universities (2018XZZX001-05)

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    摘要:

    通过直接激冷铸造(DCC)与双辊铸轧(TRC)方法生产了具有不同Fe、Si、Cu和Mn含量的1XXX系铝合金坯料,随后通过均匀化、热轧、冷轧和退火等加工工艺制备了厚度为13 μm的铝箔。结果显示,铸造工艺对铝箔强度影响较小,双辊铸轧引入的较细第二相有利于铝箔塑性。在580 ℃以上进行均匀化处理可细化直接激冷铸造铸锭的粗大晶界金属间化合物,并使其在后续热轧中破碎为小颗粒。因Cu溶质原子可提高加工硬化速率,添加Cu元素的效果优于添加Fe、Si和Mn元素。中间退火时铝箔厚度对力学性能有显著影响,这和厚度与晶粒尺寸之间的比值有关。室温储存会导致较薄铝箔的力学性能下降,这与大应变后发生的回复机制有关。

    Abstract:

    Direct chill casting (DCC) and twin roll casting (TRC) methods were applied to produce 1XXX series aluminium blanks with different contents of Fe, Si, Cu, and Mn elements. Different treatments, including homogenization, hot rolling, cold rolling, and annealing, were subsequently applied to produce the aluminium foil of 13 μm in thickness. Results show that the casting process barely affects the tensile strength of the aluminium foil, while the fine particles of secondary phase introduced by twin roll casting has a positive effect on the elongation of aluminium foil. The coarse grain boundary intermetallic in ingots after DCC can be refined at homogenization temperature above 580 °C, and subsequently be broken into small particles through the following hot rolling process. The addition of Cu is better than that of Fe, Si, or Mn elements, as Cu solute atoms can increase the strain hardening rate. The foil thickness greatly affects the tensile properties during intermediate annealing process, which is related to the ratio of thickness to grain size. Room temperature storage causes deterioration of tensile properties of thin aluminium foil due to the recovery mechanism after application of very large strain.

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方晓阳,任杰克,陈登斌,曹城,贺有为,刘嘉斌.合金元素及制备工艺对1XXX系铝合金组织及性能的影响[J].稀有金属材料与工程,2022,51(5):1565~1571.[Xiaoyang Fang, Jieke Ren, Dengbin Chen, Cheng Cao, Youwei He, Jiabin Liu. Effect of Alloying Elements and Processing Parameters on Microstructure and Properties of 1XXX Aluminium Alloys[J]. Rare Metal Materials and Engineering,2022,51(5):1565~1571.]
DOI:10.12442/j. issn.1002-185X.20210204

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  • 收稿日期:2021-03-11
  • 最后修改日期:2021-04-19
  • 录用日期:2021-05-13
  • 在线发布日期: 2022-05-31
  • 出版日期: 2022-05-30