| 激光熔覆Zr65Al7.5Ni10Cu17.5复合涂层组织结构 |
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| 引用本文： | 李刚,王彦芳,王存山,夏元良,董闯.激光熔覆Zr65Al7.5Ni10Cu17.5复合涂层组织结构[J].激光技术,2003,27(1):21-23. |
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| 作者姓名： | 李刚 王彦芳 王存山 夏元良 董闯 |
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| 作者单位： | 1.大连理工大学三束材料改性国家重点实验室, 大连, 116023 |
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| 摘 要： | 在Ti基体上激光熔覆Zr65Al7.5Ni10Cu17.5合金粉末,得到含非晶、纳米晶复合涂层。涂层由金属间化合物和非晶、纳米晶构成。涂层按组织形貌分为3层:表面枝晶区、中部细晶区和结合区枝晶区。金属间化合物为Al2Zr3,CuZr2和Zr2Ni,纳米晶为简单四方Al2Zr3相,晶格常数为:a=b=76.18nm,c=69.85nm。
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| 关 键 词： | 激光熔覆Zr65Al7.5Ni10Cu17.5 金属间化合物 非晶 |
| 文章编号： | 1001-3806(2003)01-0021-03 |
| 收稿时间： | 2002/1/29 |
| 修稿时间： | 2002年1月29日 |
Microstructure of Zr65Al7.5Ni10Cu17.5 composite coatings produced by laser cladding |
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| Li Gang,Wang Yanfang,Wang Cunshang,Xia Yuanliang,Dong Chuang.Microstructure of Zr65Al7.5Ni10Cu17.5 composite coatings produced by laser cladding[J].Laser Technology,2003,27(1):21-23. |
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| Authors: | Li Gang Wang Yanfang Wang Cunshang Xia Yuanliang Dong Chuang |
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| Abstract: | Zr 65 Al 7.5 Ni 10 Cu 17.5 composite coatings on a Ti substrate were produced by laser cladding. The micro- structure of the coating was investigated by means of SEM,TEM and XRD. The results show that the coatings mainly consist of intermetallic phases,amorphous phase and nanocrystallitic phase.The intermetallic phases are Al 2Zr 3,CuZr 2 and Zr 2Ni.The nanocrystallitic phase is Al 2Zr 3 with P4 2 structure,whose cell parameters are a=b =76.18nm, c =69.85nm. The coating can be divided into three layers according to the difference of microstructure morphology:dendrite zone on the surface,fine crystallitic zone in the middle and bonding zone. |
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| Keywords: | laser cladding Zr 65Al 7 5Ni 10Cu 17 5 intermetallic compounds amorphous |
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