| 镁合金强韧化复合机制与方法的探索 |
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| 引用本文： | 刘正,计海涛,盛晓方,陈立佳,杨林. 镁合金强韧化复合机制与方法的探索[J]. 沈阳工业大学学报, 2006, 28(5): 481-485 |
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| 作者姓名： | 刘正 计海涛 盛晓方 陈立佳 杨林 |
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| 作者单位： | 1. 沈阳工业大学,材料科学与工程学院,沈阳,110023
2. 威海万丰镁业科技发展有限公司,威海,264209 |
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| 基金项目： | 国家973计划资助项目(5133001B-1)，国家863计划资助项目(2002AA331120) |
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| 摘 要： | 由于单独的“固溶-时效强化”应用于镁合金时，其强韧化效果较低.为此，针对镁合金Hall Petch系数较大的特点，将“晶粒细化”和“时效强化”两种机制耦合或复合在一起，设计了“激冷固溶时效”、“固溶形变时效”两种方法，由此显著地提高了AZ91镁合金的强韧性水平.在试验条件下，经“激冷固溶时效”后的镁合金AZ91的压缩断裂强度和屈服强度可分别达到335.3 MPa和225.91 MPa；经“固溶形变时效”后的镁合金AZ91的抗拉强度、屈服强度和延伸率可分别达到350 MPa、300 MPa和10%以上.
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| 关 键 词： | 镁合金 晶粒细化 固溶 时效 激冷 |
| 文章编号： | 1000-1646（2006）05-0481-05 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-07-28 |
Study on strengthening-toughening coupling mechanisms of magnesium alloys |
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| LIU Zheng,JI Hai-tao,SHENG Xiao-fang,CHEN Li-jia,YANG Lin. Study on strengthening-toughening coupling mechanisms of magnesium alloys[J]. Journal of Shenyang University of Technology, 2006, 28(5): 481-485 |
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| Authors: | LIU Zheng JI Hai-tao SHENG Xiao-fang CHEN Li-jia YANG Lin |
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| Abstract: | The effect of simplex solid solution-aging treatment is not enough for strengthening magnesium alloys.Thus,both chilling-solid solution-aging and solid solution-deforming-aging technologies with(coupling) of grain refining and aging strengthening mechanisms have been proposed and studied based on the larger Hall-Petch coefficient of magnesium alloys.Under the experimental conditions used in this(investigation,) the compress fracture strength and yield strength of the AZ91 magnesium alloy treated by chilling-solid solution-aging technology have reached 335.3?MPa and 225.91?MPa,respectively.In(addition,) the tensile strength,yield strength and elongation of the AZ91 magnesium alloy treated through solid solution-deforming-aging technology are above 350?MPa,300?MPa and 10%,respectively. |
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| Keywords: | magnesium alloy grain refining solid solution aging chilling |
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