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投稿时间:2016-08-05 修订日期:2016-08-20 录用日期:2016-08-22 网络发布日期:2016-11-17
投稿时间:2016-08-05 修订日期:2016-08-20 录用日期:2016-08-22 网络发布日期:2016-11-17
中文摘要: 通过真空感应炉对Al-Sr中间合金进行了铜模喷铸处理,得到了细晶Al-Sr变质剂。然后分别采用粗晶与细晶Al-Sr对AZ91D进行了变质处理。SEM、OM、XRD、拉伸试验及硬度测试结果表明:经铜模喷铸处理的Al-Sr中间合金中的第二相Al4Sr的平均尺寸从100 μm减小至5 μm;经Al-Sr中间合金变质的AZ91D,晶粒明显细化,力学性能明显提高,但细晶Al-Sr的变质效果更好。因此,铜模喷铸是提高Al-Sr变质效果的有效途径。
Abstract:Copper mold inject casting was applied to treat Al-Sr intermediate alloy in vacuum induction furnace to produce fine-grained Al-Sr modificator. AZ91D was modified by coarse and fined grain Al-Sr respectively. The results of SEM, OM, XRD, test of tensile and hardness indicate that average size of second phase Al4Sr decreases from 100 μm to 5 μm after copper mold inject casting, and grain sizes of AZ91D metamorphosed by two kinds of Al-Sr are obviously thinner than those of molten AZ91D as well as Vickers hardness. Meanwhile, the effect of fine grain Al-Sr is better than that of coarse grain Al-Sr. Therefore, copper mold inject casting is an effective way to improve Al-Sr modification effect.
文章编号: 中图分类号:TG146.2 文献标志码:
基金项目:河北省高等学校科学技术研究项目(ZD2014040);河北省自然科学基金重点项目(E2016202406)
| 作者 | 单位 | |
| 董天顺* | 河北工业大学材料科学与工程学院 | dongtianshun111@163.com |
| 王拓 | 河北工业大学材料科学与工程学院 | |
| 刘金海 | 河北工业大学材料科学与工程学院 | |
| 李国禄 | 河北工业大学材料科学与工程学院 | |
| 周秀锴 | 河北工业大学材料科学与工程学院 |
| Author Name | Affiliation | |
| Dong Tian-shun | School of Material Science and Engineering,Hebei University of Technology | dongtianshun111@163.com |
| Wang Tuo | ||
| Liu Jin-hai | ||
| Li Guo-lu | ||
| Zhou Xiu-kai |
引用文本:
董天顺,王拓,刘金海,李国禄,周秀锴.细晶Al-Sr中间合金对AZ91D组织和性能的影响[J].有色金属(冶炼部分),2016(12):56-59.
Dong Tian-shun,Wang Tuo,Liu Jin-hai,Li Guo-lu,Zhou Xiu-kai.Effect of Fine-grained Al-Sr Master Alloy on Microstructure and Properties of AZ91D[J].Nonferrous Metals (Extractive Metallurgy),2016(12):56-59.
董天顺,王拓,刘金海,李国禄,周秀锴.细晶Al-Sr中间合金对AZ91D组织和性能的影响[J].有色金属(冶炼部分),2016(12):56-59.
Dong Tian-shun,Wang Tuo,Liu Jin-hai,Li Guo-lu,Zhou Xiu-kai.Effect of Fine-grained Al-Sr Master Alloy on Microstructure and Properties of AZ91D[J].Nonferrous Metals (Extractive Metallurgy),2016(12):56-59.

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