| 消失模铸造AZ91镁合金材料特性 |
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| 引用本文： | 赵祖德,董选普,田学锋,樊自田.消失模铸造AZ91镁合金材料特性[J].华中科技大学学报(自然科学版),2007,35(6):130-132. |
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| 作者姓名： | 赵祖德 董选普 田学锋 樊自田 |
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| 作者单位： | 1. 中国兵器工业第五九研究所,重庆,400039
2. 华中科技大学,材料成型与模具技术国家重点实验室,湖北,武汉,430074 |
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| 摘 要： | 对消失模铸造AZ91镁合金的表面成分进行了测定和分析,研究表明,在消失模铸造镁合金表面形成了复杂的MgO-Al2O3-SiO2-无定型C粒子等组成的薄膜.由于该薄膜的存在,铸件的耐腐蚀能力与普通重力铸造或其他铸造方法得到的镁合金铸件相比有较大提高.同时对消失模铸造镁合金的力学性能的变化进行了研究,发现消失模铸造条件下的AZ91镁合金拉伸性能比金属型、石墨型铸造的低,比树脂砂型的略高.并通过进行热处理强化,消失模铸造镁合金的抗拉强度、硬度和延伸率大大提高,其中高温时效对于提高合金的屈服强度、抗拉强度及加工硬化率非常有效.
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| 关 键 词： | 消失模铸造 AZ91镁合金 力学性能 模铸造 铸造镁合金 材料特性 lost foam casting 加工硬化率 抗拉强度 高合金 高温时效 延伸率 硬度 强化 热处理 树脂砂型 石墨型 金属型 性能比 拉伸 条件 发现 变化 |
| 文章编号： | 1671-4512（2007）06-0130-03 |
| 修稿时间： | 2007-01-10 |
Characteristics of AZ91 Mg-alloy from lost foam casting |
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| Zhao Zhude,Donng Xuanpu,Tian Xuefeng,Fan Zitian.Characteristics of AZ91 Mg-alloy from lost foam casting[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(6):130-132. |
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| Authors: | Zhao Zhude Donng Xuanpu Tian Xuefeng Fan Zitian |
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| Institution: | 1 No. 59 Research Institute of Ordnance Industry, Chongqing 400039, China; 2 State Key Laboratory of Plastic Forming and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The elemental composition on the Surface of AZ91 Magnesium Alloy from Lost Foam Casting was investigated.The results show that the structure of surface film of magnesium alloy on Lost Foam Casting was regarded as a composite thin film consisting of MgO-Al2O3-SiO2-unformed C etc.The composite thin film performed an important function on corrosion resistance of magnesium alloy.The mechanical property of Magnesium Alloy on Lost Foam Casting has also been studied,and it is discovered that tensile properties of AZ91Magnesium Alloy under the condition of Lost Foam Casting is lower than that of permanent mold casting and graphite mould casting,and little higher than that of resin sand mould.Through the strengthening technology of heat treatment,tensile strength,hardness and elongation of Magnesium Alloy Lost Foam Casting are improved by a long way.There into,the high temperature aging is very effective to improve the ultimate stress,the tensile strength and the working hardening degree. |
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| Keywords: | lost foam casting AZ91Magnesium alloy mechanical property |
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