| 热轧AZ31镁合金薄板的室温成形性 |
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| 引用本文： | 刘华强, 唐荻, 米振莉, 胡水平, 王哲. 热轧AZ31镁合金薄板的室温成形性[J]. 工程科学学报, 2013, 35(9): 1181-1187. DOI: 10.13374/j.issn1001-053x.2013.09.012 |
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| 作者姓名： | 刘华强 唐荻 米振莉 胡水平 王哲 |
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| 作者单位： | 北京科技大学高效轧制国家工程研究中心, 北京 100083 |
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| 基金项目： | “十二五”国家镁合金支撑项目(2011BAE22B00) |
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| 摘 要： | 针对AZ31镁合金板材室温冲压成形较差的特点,采用不同轧制温度获得镁合金板材,使用半球形凸模胀形,绘制镁合金室温成形极限图并分析轧制温度对镁合金板材组织和室温成形能力的影响.发现AZ31镁合金板材的成形性能不仅与晶粒尺寸有关,还与晶粒取向有关.基面织构的减弱可明显提高板材的胀形性能,在基面织构强度相似的情况下,晶粒尺寸对板材的成形性能起决定性影响.
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| 关 键 词： | 镁合金 成形 冲压 显微组织 织构 |
| 收稿时间： | 2012-07-30 |
Room temperature formability of hot-rolled AZ31 magnesium alloy sheets |
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| LIU Hua-qiang, TANG Di, MI Zhen-li, HU Shui-ping, WANG Zhe. Room temperature formability of hot-rolled AZ31 magnesium alloy sheets[J]. Chinese Journal of Engineering, 2013, 35(9): 1181-1187. DOI: 10.13374/j.issn1001-053x.2013.09.012 |
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| Authors: | LIU Hua-qiang TANG Di MI Zhen-li HU Shui-ping WANG Zhe |
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| Affiliation: | National Engineering Research Center of Advance Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Due to the poor pressing formability of AZ31 magnesium alloy sheets at room temperature, the magne-sium alloy sheets were obtained by rolling at different temperatures and their forming limit diagram (FLD) was drawn by the test of hemispherical punch bulging at room temperature. The effects of rolling temperature on the microstructure and room-temperature formability of the magnesium alloy sheets were analyzed. It is found that the room-temperature formability of the magnesium alloy sheets not only depends on grain size, but also depends on grain orientation. The weakening of the basal texture can significantly improve the performance of bulging forming, and grain size plays a decisive role on the room-temperature formability of the magnesium alloy sheets at the similar basal texture intensity. |
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| Keywords: | magnesium alloys forming pressing microstructure textures |
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