| 7055铝合金挤压材黑线缺陷分析 |
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| 引用本文： | 张江斌,陈愿情,何克准,李剑.7055铝合金挤压材黑线缺陷分析[J].金属热处理,2020,45(1):251-253. |
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| 作者姓名： | 张江斌 陈愿情 何克准 李剑 |
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| 作者单位： | 广西南南铝加工有限公司 广西铝合金材料与加工重点实验室, 广西 南宁 530031 |
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| 基金项目： | 技术开发项目;广西科学研究 |
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| 摘 要： | 利用高倍组织观察,结合能谱分析,对7055铝合金挤压材阳极氧化后的“黑线”缺陷进行了分析。结果表明:“黑线”区域为AlZr聚集导致。通过严格控制原料质量,改善AlZr中间合金组织;在合金成分范围内,适当降低Zr元素的含量;熔炼过程中适当提高加热温度及时间,使Al3Zr粒子熔解等手段,可消除“黑线”缺陷。
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| 关 键 词： | 7055铝合金 阳极氧化 AlZr中间合金 黑线缺陷 |
| 收稿时间： | 2019-06-21 |
Analysis on black line defects in 7055 aluminum alloy extrusion profiles |
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| Zhang Jiangbin,Chen Yuanqing,He Kezhun,Li Jian.Analysis on black line defects in 7055 aluminum alloy extrusion profiles[J].Heat Treatment of Metals,2020,45(1):251-253. |
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| Authors: | Zhang Jiangbin Chen Yuanqing He Kezhun Li Jian |
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| Affiliation: | Guangxi Key Laboratory of Materials and Processes of Aluminum Alloys, Guangxi Alnan Aluminum Fabrication Co., Ltd., Nanning Guangxi 530031, China |
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| Abstract: | "Black line"defects on the surface of 7055 aluminum alloy extrusion profiles after anodic oxidation were identified by high-magnification optical microscope combined with energy spectrum analysis. The results show that the"black line"defects are caused by AlZr aggregation. Such defects can be eliminated by strictly controlling the quality of raw materials,improving the microstructure of AlZr master alloy,properly reducing the content of Zr element in the alloy composition range,increasing the heating temperature and time in the melting process,and melting the Al3Zr particles. |
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| Keywords: | 7055 aluminum alloy anodic oxidation AlZr master alloy black line defects |
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