Preparation of Al-Cu-Fe-（Sn,Si） quasicrystalline bulks by laser multilayer cladding
来源期刊：International Journal of Minerals Metallurgy and Materials2012年第5期
论文作者：Eric Fleury
文章页码：434 - 440
摘 要：(Al65Cu20Fe15) 100-x Sn x（x=0,12,20,30） and Al57Si10Cu18Fe15 powders were cladded on a medium carbon steel（45# steel） substrate by laser multilayer cladding,respectively.The phases and properties of the produced quasicrystalline bulks were investigated.It was found that the main phases in the Al 65 Cu 20 Fe 15 sample were crystalline λ-Al13 Fe4 and icosahedral quasicrystal together with a small volume fraction of θ-Al 2 Cu phase.The volume fraction of icosahedral phase decreased as the Sn content in the（Al65Cu20Fe15） 100-x Sn x samples increased owing to the formation of β-CuSn phase.The increase of Sn content improved the brittleness of the quasicrystal samples.The morphology of the solidification microstructure in the Al57Si10Cu18Fe15 sample changed from elongated shape to spherical shape due to the addition of Si.The nanohardness of the laser multilayer cladded quasicrystal samples was equal to that of the as-cast sample prepared by vacuum quenching.In terms of hardness,the laser cladded Al57Si10Cu18Fe15 quasicrystalline alloy has the highest value among all the investigated samples.
Eric Fleury
Center for High Temperature Energy Materials,Korea Institute of Science & Technology(KIST),Seoul 130 650,Korea
摘 要：(Al65Cu20Fe15) 100-x Sn x（x=0,12,20,30） and Al57Si10Cu18Fe15 powders were cladded on a medium carbon steel（45# steel） substrate by laser multilayer cladding,respectively.The phases and properties of the produced quasicrystalline bulks were investigated.It was found that the main phases in the Al 65 Cu 20 Fe 15 sample were crystalline λ-Al13 Fe4 and icosahedral quasicrystal together with a small volume fraction of θ-Al 2 Cu phase.The volume fraction of icosahedral phase decreased as the Sn content in the（Al65Cu20Fe15） 100-x Sn x samples increased owing to the formation of β-CuSn phase.The increase of Sn content improved the brittleness of the quasicrystal samples.The morphology of the solidification microstructure in the Al57Si10Cu18Fe15 sample changed from elongated shape to spherical shape due to the addition of Si.The nanohardness of the laser multilayer cladded quasicrystal samples was equal to that of the as-cast sample prepared by vacuum quenching.In terms of hardness,the laser cladded Al57Si10Cu18Fe15 quasicrystalline alloy has the highest value among all the investigated samples.
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