| Ag和稀土Y复合添加对金属间化合物NiAl显微组织的影响 |
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| 引用本文： | 高崇,吕墨豪,杜兴蒿. Ag和稀土Y复合添加对金属间化合物NiAl显微组织的影响[J]. 沈阳航空工业学院学报, 2011, 28(4): 33-36. DOI: 10.3969/j.issn.2095-1248.2011.04.008 |
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| 作者姓名： | 高崇 吕墨豪 杜兴蒿 |
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| 作者单位： | 沈阳航空航天大学材料科学与工程学院,辽宁沈阳,110136 |
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| 基金项目： | 辽宁省教育厅基础研究项目(项目编号:05L316) |
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| 摘 要： | 研究了Ag和Y的复合添加对金属间化合物NiAI显微组织的影响。利用非自耗电弧炉制备了三种不同Y和Ag含量（1．0，5．0，10．0质量分数％）的NiAJ合金，其中一组试样进行了高温固溶和时效处理。实验结果表明，随着Y和Ag含量的增加，铸态下的NiAI合金晶粒呈逐渐细化的趋势，并且柱状晶生长方式逐渐演变为典型的糊状凝固方式。EDS和XRD分析表明，晶界处有富Ag、Y相形成；固溶时效后的NiAl合金组织则演变为粗大的等轴晶粒，Y和Ag元素仍然在晶界处偏聚。
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| 关 键 词： | NiAl金属间化合物 显微组织 稀土元素 |
Combined effects of Ag and Y on the microstructure of NiAl intermetallic compound |
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| GAO Chong,LV Mo-hao,DU Xing-hao. Combined effects of Ag and Y on the microstructure of NiAl intermetallic compound[J]. Journal of Shenyang Institute of Aeronautical Engineering, 2011, 28(4): 33-36. DOI: 10.3969/j.issn.2095-1248.2011.04.008 |
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| Authors: | GAO Chong LV Mo-hao DU Xing-hao |
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| Affiliation: | GAO Chong,LV Mo-hao,DU Xing-hao(School of Materials Science and Engineering,Shenyang Aerospace University,Liaoning Shenyang 110136) |
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| Abstract: | This paper discusses the combined effects of Ag and Y on microstructure of NiAl intermetallic compound.Three NiAl alloys with different Ag,and Y contents(1.0,5.0,10.0 wt.%) were prepared by non-consumable electro-arc furnace,and some of these samples were treated by high-temperature solid solution.The results revealed that the addition of Ag and Y would refine the as-cast microstructure of NiAl alloys significantly and the microstructure has evolved gradually from columnar grains into dendrite grains.Both t... |
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| Keywords: | NiAl intermetallic compound microstructure rear-earth element |
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