High volume fraction and length-diameter ratio of TiB short fiber and TiB2P reinforce Ti-based alloy composite coatings by laser synthesis in situ - 文章详情页

作者：

Lin, Yinghua (Lin, Yinghua.) | Lei, Yongping (Lei, Yongping.) (学者：雷永平)

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摘要：

Preset　layering　powder　containing　Ti+TiB2P,　coarse　TiB2P　and　fine　TiB2P　are　taken　to　prepare　TiB　short　fiber,　with　reinforcing　Ti-based　composite　coatings　on　the　surface　of　Ti6Al4V　through　laser　synthesis　in-situ.　Volume　fraction　and　length-diameter　ratio　of　TiB　short　fiber　are　analyzed　by　scan　electron　microscopy　(SEM)　and　X-ray　diffraction　(XRD).　The　results　show　that　the　coating　is　mainly　composed　of　TiB　short　fiber　and　TiB2P.　When　Ti+TiB2P　acts　as　a　preset　layer,　length-diameter　ratio　of　TiB　short　fiber　reduces　as　the　content　of　Ti　increases;　when　coarse　TiB2P　acts　as　a　preset　layer,　the　coating　is　difficult　to　form　a　large　volume　fraction　of　TiB　short　fibers;　when　fine　TiB2P　acts　as　a　preset　layer,　high　volume　fraction　and　large　length-diameter　ratio　of　TiB　short　fiber　can　be　formed　in　the　coating.　The　formation　mechanism　is　explained　through　microstructure　evolvement　rule　of　TiB　short　fiber　in　the　coating.

关键词：

Aluminum alloys Composite coatings Fibers Laser cladding Powder coatings Ternary alloys Titanium alloys Vanadium alloys Volume fraction

作者机构：

[ 1 ] [Lin, Yinghua]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Lei, Yongping]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

yplei@bjut.edu.cn

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