| 热处理对挤压铸造Mg93YZn6合金组织和性能的影响 |
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| 引用本文： | 王冰,赵宇宏,靳玉春,田晋忠,侯华.热处理对挤压铸造Mg93YZn6合金组织和性能的影响[J].特种铸造及有色合金,2020(3):282-285. |
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| 作者姓名： | 王冰 赵宇宏 靳玉春 田晋忠 侯华 |
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| 作者单位： | 中北大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(51774254,51774253,51701187,U1610123,51674226,51574207,51574206);山西省科技重大专项基金资助项目(MC2016-06)。 |
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| 摘 要： | 采用挤压铸造法制备了Mg93YZn6合金,并对其进行高温热处理,分析了铸态和热处理态的Mg93YZn6合金的微观组织、显微硬度和力学性能。结果表明,该合金的挤压铸造和热处理后的组织中均只有α-Mg基体相和准晶I相生成。经500℃×4h热处理后,合金中的准晶相含量与铸态合金中变化不大。经550℃×2h热处理后,合金中的准晶相有所减少。与铸态合金相比,热处理后合金的硬度、抗拉强度和伸长率均提高。
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| 关 键 词： | Mg93YZn6合金 准晶相 挤压铸造 热处理 力学性能 |
Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg93YZn6 Magnesium Alloy |
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| Wang Bing,Zhao Yuhong,Jin Yuchun,Tian Jinzhong,Hou Hua.Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg93YZn6 Magnesium Alloy[J].Special Casting & Nonferrous Alloys,2020(3):282-285. |
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| Authors: | Wang Bing Zhao Yuhong Jin Yuchun Tian Jinzhong Hou Hua |
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| Affiliation: | (School of Materials Science and Engineering,North University of China) |
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| Abstract: | Mg93YZn6 alloy was prepared by squeeze casting,and then it was treated by heat treatment at high temperature.The microstructure,microhardness and mechanical properties of the as-cast and heat-treated Mg93YZn6 alloy were analyzed by OM,SEM and tensile testing.The results reveal that theα-Mg matrix and the qusaicrystal I-phase are generated in the microstructure after squeeze casting and heat treatment.After heat treatment at 500℃for 4 h,the content of quasicrystal phase can be ignored for change in the as-cast alloy.The quasicrystal phase is decreased after heat treatment at 550℃for 2 h.Compared with those of the as-cast alloy,the hardness,tensile strength and elongation of the alloy are all improved,especially elongation after heat treatment. |
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| Keywords: | Mg93YZn6 Alloy Quasicrystal Squeeze Casting Heat Treatment Mechanical Properties |
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