| 激光熔覆FeCoNiCrAl_2Si高熵合金涂层 |
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| 引用本文： | 张晖,潘冶,何宜柱.激光熔覆FeCoNiCrAl_2Si高熵合金涂层[J].金属学报,2011(8). |
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| 作者姓名： | 张晖 潘冶 何宜柱 |
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| 作者单位： | 东南大学材料科学与工程学院江苏省先进金属材料高技术研究重点实验室;安徽工业大学材料科学与工程学院安徽省金属材料与加工重点实验室; |
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| 摘 要： | 研究了激光熔覆后经600—1000℃退火处理的FeCoNiCrAl_2Si高熵合金涂层的组织和性能.结果表明,激光熔覆过程中的快速凝固条件有利于抑制涂层中金属间化合物的析出,涂层具有bcc结构,为有序固溶体,具有较高的硬度(900 HVo 5),相结构和硬度的高温稳定性好;涂层组织为树枝晶,Fe,Cr和Si在枝晶间富集,而Ni,Co和Al在枝晶中富集.随退火温度升高,Al和Si的偏析程度加剧,而其余元素的偏析变化不明显.EBSD研究显示熔覆态涂层的枝晶和枝晶间界面分布有大量小角度晶界,经600℃退火5 h后小角度晶界转变为大角度晶界,晶粒被细化.
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| 关 键 词： | FeCoNiCrAl_2Si 高熵合金 涂层 激光熔覆 |
LASER CLADDING FeCoNiCrAl_2Si HIGH-ENTROPY ALLOY COATING |
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| ZHANG Hui,PAN Ye,HE Yizhu School of Materials Science , Engineering,Jiangsu Key Lab of Advanced Metallic Materials,Southeast University,Nanjing School of Materials Science , Engineering,Anhui Key Lab of Materials Science , Processing,Anhui University of Technology,Maanshan.LASER CLADDING FeCoNiCrAl_2Si HIGH-ENTROPY ALLOY COATING[J].Acta Metallurgica Sinica,2011(8). |
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| Authors: | ZHANG Hui PAN Ye HE Yizhu School of Materials Science Engineering Jiangsu Key Lab of Advanced Metallic Materials Southeast University Nanjing School of Materials Science Engineering Anhui Key Lab of Materials Science Processing Anhui University of Technology Maanshan |
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| Affiliation: | ZHANG Hui~(1,2)),PAN Ye~(1)),HE Yizhu~(2)) 1) School of Materials Science and Engineering,Jiangsu Key Lab of Advanced Metallic Materials,Southeast University,Nanjing 211189 2) School of Materials Science and Engineering,Anhui Key Lab of Materials Science and Processing,Anhui University of Technology,Maanshan 243002 |
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| Abstract: | |
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| Keywords: | FeCoNiCrAl_2Si high-entropy alloy coating laser cladding |
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