| 热处理对Mg-8Gd-3Y-1.5Zn-0.6Zr合金组织与力学性能的影响 |
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| 引用本文： | 田凯凯,李全安,陈晓亚,梅婉婉,陈培军,李向宇,谭劲峰.热处理对Mg-8Gd-3Y-1.5Zn-0.6Zr合金组织与力学性能的影响[J].金属热处理,2022,47(11):54-58. |
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| 作者姓名： | 田凯凯 李全安 陈晓亚 梅婉婉 陈培军 李向宇 谭劲峰 |
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| 作者单位： | 1.河南科技大学 材料科学与工程学院, 河南 洛阳 471023; 2.有色金属新材料与先进加工技术省部共建协同创新中心, 河南 洛阳 471023; 3.洛阳晟雅镁合金科技有限公司, 河南 洛阳 471921; 4.洛阳铜加工集团有限责任公司, 河南 洛阳 471003; 5.中铝洛阳铜加工有限公司, 河南 洛阳 471003 |
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| 基金项目： | 国家自然科学基金(52201119) |
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| 摘 要： | 采用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪和万能力学试验机等研究了固溶和时效处理对Mg-8Gd-3Y-1.5Zn-0.6Zr合金显微组织和力学性能的影响。结果表明,Mg-8Gd-3Y-1.5Zn-0.6Zr合金铸态、固溶态和时效态的显微组织均由α-Mg基体、Mg5(Gd, Y, Zn)相和LPSO结构组成;合金经固溶和时效处理后的最大抗拉强度由铸态的187.96 MPa提高到241.93 MPa,提高了28.71%,伸长率由铸态的8.48%提高到13.91%,提高了64.03%;不同热处理状态下合金的拉伸断口形貌主要以脆性断裂为主。
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| 关 键 词： | Mg-8Gd-3Y-1.5Zn-0.6Zr合金 热处理 显微组织 力学性能 |
| 收稿时间： | 2022-06-18 |
Effect of heat treatment on microstructure and mechanical properties of Mg-8Gd-3Y-1.5Zn-0.6Zr alloy |
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| Tian Kaikai,Li Quanan,Chen Xiaoya,Mei Wanwan,Chen Peijun,Li Xiangyu,Tan Jinfeng.Effect of heat treatment on microstructure and mechanical properties of Mg-8Gd-3Y-1.5Zn-0.6Zr alloy[J].Heat Treatment of Metals,2022,47(11):54-58. |
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| Authors: | Tian Kaikai Li Quanan Chen Xiaoya Mei Wanwan Chen Peijun Li Xiangyu Tan Jinfeng |
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| Abstract: | Effect of solid solution and aging treatment on microstructure and mechanical properties of Mg-8Gd-3Y-1.5Zn-0.6Zr alloy was investigated by means of optical microscope (OM), scanning electron microscopy (SEM), X-ray diffractometer (XRD) and universal mechanics tester. The results show that the microstructure of as-cast, solid solution treated and aged Mg-8Gd-3Y-1.5Zn-0.6Zr alloy are composed of α-Mg matrix, Mg5(Gd, Y, Zn) phase and LPSO structure. After solid solution and aging treatment, the ultimate tensile strength is increased from 187.96 MPa(as-cast) to 241.93 MPa, which is increased by 28.71%, and the elongation is increased from 8.48%(as-cast) to 13.91%, which is increased by 64.03%. The tensile fracture morphologies of the alloy under different heat treatment states are mainly brittle fracture. |
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| Keywords: | Mg-8Gd-3Y-1 5Zn-0 6Zr alloy heat treatment microstructure mechanical properties |
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