| B对ZM5镁合金凝固组织和硬度的影响 |
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| 引用本文： | 刘俊英,刘栩瑞. B对ZM5镁合金凝固组织和硬度的影响[J]. 特种铸造及有色合金, 2019, 0(7): 805-807 |
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| 作者姓名： | 刘俊英 刘栩瑞 |
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| 作者单位： | 河源职业技术学院机电工程学院;南昌航空大学航空制造工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(51401102) |
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| 摘 要： | 向ZM5镁合金中添加B元素,主要考察了B对合金凝固组织和硬度的影响。结果表明,B对ZM5镁合金具有良好的细化作用。随着B含量的增加,合金的晶粒尺寸逐渐减小。当B含量为0.03%时,ZM5镁合金的平均晶粒尺寸仅为76μm,相比未细化时降低了72.2%。B与Al形成AlB2化合物,其能够作为异质形核核心细化ZM5镁合金晶粒。随着B含量的增加,ZM5镁合金的硬度逐渐增加,当B含量为0.03%时,合金的硬度相比未细化时提高了23.2%。
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| 关 键 词： | B ZM5镁合金 组织 硬度 |
Effects of B on Microstructure and Mechanical Properties of the ZM5 Magnesium Alloy |
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| Liu Junying,Liu Xurui. Effects of B on Microstructure and Mechanical Properties of the ZM5 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2019, 0(7): 805-807 |
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| Authors: | Liu Junying Liu Xurui |
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| Affiliation: | (College of Mechanical and Electrical Engineering,Heyuan Polytechnic;School of Aeronautical Manufacture Engineering,Nanchang Hangkong University) |
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| Abstract: | The effects of B addition on microstructure and properties of the ZM5 magnesium alloy were investigated.The results show that the B element presents the satisfied grain refinement effects.With increasing in B addition,grain size in the alloy is decreased gradually.With 0.03%B addition,the average grain size of ZM5 magnesium alloy is only 76μm,which is decreased by 72.2%compared with that of the unrefined ones,which is attributed to the generation of AlB2 compound with Al and B to act as heterogeneous nuclei to refine grain size in the alloy.With increasing in B additions,the hardness of ZM5 magnesium alloy is further increased.With 0.03%B addition,the hardness of ZM5 magnesium alloy is increased by 23.2%compared with that of the unrefined ones. |
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| Keywords: | B ZM5 Magnesium Alloy Microstructure Hardness |
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