| 高爽,崔家铭,李洪林,曲凤娇,董政,李健.电池包用6061铝合金型材成分与挤压成型性关系[J].有色金属材料与工程,2023,44(5):47-52. |
| 电池包用6061铝合金型材成分与挤压成型性关系 |
| Relationship between composition and extrusion formability of 6061 aluminum alloy profiles for battery packs |
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| DOI：10.13258/j.cnki.nmme.2023.05.007 |
| 中文关键词: 6061铝合金 挤压成型性 成分 细晶元素 力学性能 |
| 英文关键词:6061 aluminum alloy extrusion formability composition fine-grained elements mechanical properties |
| 基金项目:辽宁省“兴辽英才计划”资助项目（XLYC1908014） |
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| 中文摘要: |
| 由于现有6061铝合金挤压成型性及力学性能较差，在实际生产中应用范围受限，通过改变合金成分开发新型6061铝合金，将Si的质量分数调整至国标上限0.73%～0.80%，Mg的质量分数调整至国标下限0.82%～0.90%，同时分别设计了多细晶元素（Mn+Cr的质量分数为0.40%）与少细晶元素（Mn+Cr的质量分数为0.14%）两种配比方式，分别命名为6061-A铝合金和6061-B铝合金。通过观察微观组织、测试力学性能、调整挤压速度，研究6061-A铝合金和6061-B铝合金的力学性能、挤压成型性。结果表明，6061-A铝合金挤压成型性更好，同时经（175±5）℃×8 h热处理后，型材屈服强度达到312 MPa，抗拉强度达到325 MPa，伸长率为9%，均高于标准要求。 |
| 英文摘要: |
| Due to the poor extrusion formability and mechanical properties of the existing 6061 aluminum alloy, its application scope in practical production is limited. By changing the alloy composition to develop a new 6061 aluminum alloy, the mass fraction of Si was adjusted to the of the national-standard upper limit of 0.73%-0.80%, and the mass fraction of Mg was adjusted to the national-standard lower limit of 0.82%-0.90%. At the same time, two proportioning methods were designed, which were high fine-grained elements (Mn+Cr mass fraction of 0.40%) and low fine-grained elements (Mn+Cr mass fraction of 0.14%), and named as 6061-A aluminum alloy and 6061-B aluminum alloy, respectively. By observing microstructure, testing mechanical properties, and adjusting extrusion speed, the mechanical properties and extrusion formability of 6061-A and 6061-B aluminum alloys were studied. The results show that the 6061-A aluminum alloy has better extrusion formability, and after the heat treatment at (175 ± 5) °C for 8 h, the yield strength of the profile reach 312 MPa, the tensile strength reach 325 MPa, and the elongation rate is 9%, which are all higher than the standard requirements. |
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