铸造钛合金表面氩弧熔覆钛基复合材料的研究
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摘要
使用氩弧熔覆技术在铸态ZTA15钛合金表面预置石墨粉,获得厚度约1mm的钛基复合材料熔覆层。熔覆层内主要相为α-Ti和TiC,且TiC相以树枝晶形态弥散分布。熔覆层显微硬度最高可达HV_1443,相比铸态基体硬度值提高了33%。
The titanium matrix composite cladding layer with thickness of about 1 mm could be fabricated by using argon arc cladding technique to prefabricate graphite powder on the surface of cast ZTA15 titanium alloy.In the cladding layer, the main phases were α-Ti and TiC, and the TiC phases were dispersed with dendritic morphology. The microhardness of the cladding layer was up to 443 HV1, with an increase of 33% compared with that of the as-cast matrix.
The titanium matrix composite cladding layer with thickness of about 1 mm could be fabricated by using argon arc cladding technique to prefabricate graphite powder on the surface of cast ZTA15 titanium alloy.In the cladding layer, the main phases were α-Ti and TiC, and the TiC phases were dispersed with dendritic morphology. The microhardness of the cladding layer was up to 443 HV1, with an increase of 33% compared with that of the as-cast matrix.
引文
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[4]张晓丹.国内外钛合金研究及应用现状[J].新材料产业,2017(3):7-10.
[5]张文毓.钛合金表面耐磨处理技术研究现状[J].全面腐蚀控制,2017,31(2):25-29,87.
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[7]孟君晟,吉泽升. TC4合金氩弧熔覆Ni60+B4 C复合涂层组织及耐磨性[J].材料热处理学报,2013,34(3):140-144.
[8]何波,兰姣姣,杨光,等.激光原位合成TiB-TiC颗粒增强钛基复合材料的组织与其耐磨性能[J].稀有金属材料与工程,2017,46(12):3805-3810.
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[11]王振廷,陈丽丽,张显友.钛合金表面氩弧熔覆Ti C增强复合涂层组织与性能分析[J].焊接学报,2008,29(9):43-45.
[12]王振廷,高红明,梁刚,等. Ti6Al4V合金表面氩弧熔覆原位合成TiC-TiB2增强钛基复合涂层组织与耐磨性[J].稀有金属材料与工程,2012,41(7):1259-1262.
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