Interface reactions between TiAl alloys and diacetatozirconic acid–yttria molds differentiated by ammonium metatungstate addition - 文章详情页

作者：

Cui, Y.-S. (Cui, Y.-S..) | Liu, D.-B. (Liu, D.-B..) | Chai, L.-H. (Chai, L.-H..) | Chen, Z.-Y. (Chen, Z.-Y..) (学者：陈子勇)

收录：

EI Scopus SCIE CSCD

摘要：

Two　types　of　diacetatozirconic　acid–yttria　molds　which　were　labeled　as　ZYW　mold　(diacetatozirconic　acid–yttria　mold　with　traces　of　ammonium　metatungstate　in　the　slurry)　and　ZY　mold　(diacetatozirconic　acid–yttria　mold　without　ammonium　metatungstate)　were　prepared　by　traditional　investment　casting.　The　ZYW　and　ZY　molds　were　sintered　in　a　carbon-reducing　atmosphere　and　in　air,　respectively,　at　1550　°C　for　4　h.　Interactions　between　Ti–47Al–2Cr–2Nb　(at%)　alloys　and　the　molds　at　1650　°C　for　30　min　were　studied.　The　microstructures　of　the　metal–mold　interfaces　and　the　presence　of　inclusions　and　oxygen　contamination　in　the　TiAl　bulk　alloy　were　analyzed,　and　the　influences　of　ammonium　metatungstate　were　discussed.　The　results　indicate　that　WO3　releases　O　into　the　TiAl　melt,　introducing　tungsten　metal　into　the　alloy　matrix.　The　TiAl　alloy　ingots　cast　in　the　ZY　molds　had　the　fewest　inclusions　and　the　lowest　oxygen　contamination.　©　2017　The　Nonferrous　Metals　Society　of　China　and　Springer-Verlag　Berlin　Heidelberg

关键词：

Ammonium metatungstate; Diacetatozirconic acid–yttria molds; Interactions; TiAl-based alloys

作者机构：

[ 1 ] [Cui, Y.-S.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Liu, D.-B.]Beijing Institute of Astronautical Systems Engineering, Beijing, 100076, China
[ 3 ] [Chai, L.-H.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Chen, Z.-Y.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China

通讯作者信息：

陈子勇
[Chen, Z.-Y.]College of Materials Science and Engineering, Beijing University of TechnologyChina

电子邮件地址：

czy@bjut.edu.cn

查看成果更多字段

成果类型
所属机构

所有年份指定年份从至