| 新型Al-Mg-Cu铝合金铸锭均匀化过程中相的变化 |
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| 引用本文： | 冯正海,李念奎. 新型Al-Mg-Cu铝合金铸锭均匀化过程中相的变化[J]. 轻合金加工技术, 2009, 37(9) |
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| 作者姓名： | 冯正海 李念奎 |
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| 作者单位： | 东北轻合金有限责任公司,黑龙江,哈尔滨,150060;东北轻合金有限责任公司,黑龙江,哈尔滨,150060 |
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| 摘 要： | 采用金相、扫描电镜、能谱和DSC分析方法研究了新型Al-Mg-Cu铝合金(以下简称A铝合金)半连续水冷铸锭均匀化处理过程中相的变化.结果表明,A铝合金半连续铸锭的铸态组织中存在大量非平衡凝固的含Al2CuMg和Al2Cu的共晶相,其熔化温度为505℃;在595℃12 h均匀化过程中,该合金铸锭中非平衡凝固共晶相发生溶解,合金中铸造过程形成的非平衡凝固共晶体Al2Cu全部消失,但Al2CuMg相不能完全溶解.
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| 关 键 词： | A铝合金 均匀化 DSC 共晶相 |
Microstructural evolution of ingot of A aluminum alloy during homogenization treatment |
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| FENG Zheng-hai,LI Nian-kui. Microstructural evolution of ingot of A aluminum alloy during homogenization treatment[J]. Light Alloy Fabrication Technology, 2009, 37(9) |
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| Authors: | FENG Zheng-hai LI Nian-kui |
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| Affiliation: | Northeast Light Alloy Co.;Ltd.;Harbin 150060;China |
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| Abstract: | The evolutions of the microstructure and phases of the direct chill semicontinuous casting ingot of A aluminum alloy during its homogenization treatment were studied with metallographic analysis,scanning electric microscopy(SEM),energy spectroscopy and differential scanning calorimetry(DSC).The results showed that:a considerable amount of non-equilibrium eutectics containing Al,Zn,Cu,Mg exist in the direct chill semicontinuous casting ingot of 7B04 super-high strength aluminum alloy,and their melting temper... |
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| Keywords: | DSC |
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