磁场辅助激光熔覆铝基金属玻璃覆层
Aluminum-based metallic glass coatings prepared with magnetic field assisted laser cladding
查看参考文献21篇
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文摘
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为提高铝合金的表面性能,采用磁场辅助激光熔覆的方法在5083铝合金表面制备了Al-Ni-Y-Co-La五元金属玻璃熔覆层,并对其进行组织成分及性能分析。实验结果表明:熔覆层主要由非晶相、α-Al相以及Al4NiY等金属间化合物组成,旋转磁场的搅拌作用使熔覆层非晶相含量由10.2%提高到30.7%,且能够有效抑制多道搭接和多层堆积过程中重熔区晶粒的生长,细化了熔覆层晶粒组织,降低了残余应力,提高了显微硬度及韧性,使其平均显微硬度从278HV_(0.1)提高至335HV_(0.1),且波动较小,平均抗拉强度为303MPa,为基体拉伸件的110.2%,平均伸长率为6.79%,为基体的33.1%。 |
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其他语种文摘
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Al-Ni-Y-Co-La five-component metallic glass cladding layer was prepared on the surface of 5083aluminum alloy by magnetic field assisted laser cladding technology to improve the surface properties of the aluminum alloy.The microstructure and properties of the cladding layer are analised.Some of the effective experimental results show that the cladding layer is mainly composed of amorphous phase,α-Al phase and Al4NiY intermetallic compound phase.The stirring of the rotating magnetic field increases the amorphous phase content of the cladding layer from 10.2%to 30.7%and could inhibit the recrystallization grain growth effectively in the process of multi-lap and multi-layer deposition.The residual stress is reduced and the grain structure is refined.The microhardness and tenacity are enhanced,the average microhardness increased from 278HV_(0.1)to 335HV_(0.1)with less fluctuation.The average tensile strength is 303MPa,110.2%of the matrix tensile specimen and the average elongation is 6.79%,33.1%of the matrix. |
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来源
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航空学报
,2018,39(11):422134-1-422134-9 【核心库】
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DOI
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10.7527/s1000-6893.2018.22134
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关键词
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激光熔覆
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磁场
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铝基金属玻璃
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残余应力
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显微硬度
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抗拉强度
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地址
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1.
陆军装甲兵学院, 装备再制造技术国防科技重点实验室, 北京, 100072
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中国科学院金属研究所, 沈阳材料科学国家联合实验室, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-6893 |
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学科
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金属学与金属工艺;航空 |
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基金
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国家科技部国际合作项目
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国家重点研发计划
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文献收藏号
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CSCD:6371880
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