| Laser surface cladding of ZM5 Mg-base alloy with Al＋Y powder |
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| 引用本文： | 陈长军,王东生,王茂才.Laser surface cladding of ZM5 Mg-base alloy with Al＋Y powder[J].中国有色金属学会会刊,2004,14(6):1091-1094. |
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| 作者姓名： | 陈长军 王东生 王茂才 |
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| 作者单位： | StateKeyLaboratoryforCorrosionandProtection,InstituteofMetalResearch,ChineseAcademyofSciences,Shenyang110016,China |
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| 摘 要： | The surface properties of ZM5 Mg-base alloy were modified by laser cladding with Al Y powder. Laser cladding was carried out with a 5kW continuous wave CO2 laser by melting the preplaced powder mixture of Al and Y. Following laser cladding, the cladding zone was characterized by a detailed microstructural observation and phase analysis. Moreover, the microhardness and element distribution were evaluated in detail. The surface modified layer consists of Mg17 Al12 and Al4MgY phases, while α-Mg and Mg17Al12 in the substrate. The microhardness of the cladding zone was significantly enhanced as high as HV122-180 as compared to HV60-80 of the substrate region. The maximal hardness about HV224 is in the interface due to the formation of intermetallic Mg17 Al12 phase. The microstructure is refined and Mg diffuses into the cladding material which leads to the formation of Mg17 Al12.
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| 关 键 词： | 激光金属包覆 ZM5镁基合金 稀土元素 铝粉 微观结构 |
Laser surface cladding of ZM5 Mg-base alloy with Al+Y powder |
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| CHEN Chang-jun,WANG Dong-sheng,WANG Mao-cai.Laser surface cladding of ZM5 Mg-base alloy with Al+Y powder[J].Transactions of Nonferrous Metals Society of China,2004,14(6):1091-1094. |
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| Authors: | CHEN Chang-jun WANG Dong-sheng WANG Mao-cai |
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| Abstract: | The surface properties of ZM5 Mg-base alloy were modified by laser cladding with Al Y powder. Laser cladding was carried out with a 5 kW continuous wave CO2 laser by melting the preplaced powder mixture of Al and Y. Following laser cladding, the cladding zone was characterized by a detailed microstructural observation and phase analysis. Moreover, the microhardness and element distribution were evaluated in detail. The surface modified layer consists of Mg17 Al12 and Al4 MgY phases, while a-Mg and Mg17 Al12 in the substrate. The microhardness of the cladding zone was significantly enhanced as high as HV122 - 180 as compared to HV60 - 80 of the substrate region. The maximal hardness about HV224 is in the interface due to the formation of intermetallic Mg17 Al12 phase. The microstructure is refined and Mg diffuses into the cladding material which leads to the formation of Mg17 Al12. |
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| Keywords: | laser cladding ZM5 Mg base alloy rare earth Al Y powder microstructure |
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