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Al_2O_3-TiAl基复合材料的力学性能与保温时间的关系

以压力协助放热弥散法原位合成了Al2O3-TiAl基复合材料.研究了复合材料的相组成,以及室温硬度、室温抗折强度和断裂韧性等与保温时间的变化关系.结果表明:由两种烧成制度制备的产物都是由TiAl、Ti3Al、Al2O3以及NbAl3相组成.Nb2O5的掺杂对生成基体内TiAl及Ti3Al的相对含量有一定的调控作用  (本文共5页) 阅读全文>>

《Journal of Wuhan University of Technology(Materials Science Edition)》2007年01期
Journal of Wuhan University of Technology(Materials Science Edition)

Preparation and Microstructural Analysis of Ti_2AlC/TiAl(Nb) Composite

By using the spark plasma sintering process, Ti2AlC/TiAl composite with the addition of Niobium (Nb) was prepared in-situ and the microstructure of Ti2AlC/TiAl (Nb) composite was investigated by means of transmission electron microscopy (TEM) and high-resolution electron microscopy (HREM). The results indicate that new-formed Ti2AlC particles disperse with ...  (本文共5页) 阅读全文>>

《Science Foundation in China》2016年04期
Science Foundation in China

PST TiAl single crystals for high temperature applications

Recently,the research team led by Prof.Chen Guang(陈光)at the Engineering Research Center of Materials Behavior and De...  (本文共1页) 阅读全文>>

《Rare Metals》2016年01期
Rare Metals

Advances in phase relationship for high Nb-containing TiAl alloys

γ-TiAl alloys,including two categories(the conventional TiAl and the high Nb-containing TiAl(high Nb-TiAl)),are technologically intriguing because of their applications at high temperatures.Specifically,the service temperature of the high Nb-TiAl alloys is 60-100℃higher than that of conventional TiAl alloys.Recently developed TiAl alloys,for example TNB,TNM,β-γ all...  (本文共11页) 阅读全文>>

《稀有金属材料与工程》2016年09期
稀有金属材料与工程

新型超轻TiAl多孔材料的制备及其力学性能

基于化学反应造孔和物理占位造孔的联合作用,发展了一种新型Ti Al金属间化合物多孔材料的制备工艺,具体可用均混、压制、脱溶、烧结4个阶段来描述。该工艺实现了毫/微米双孔结构Ti Al多孔材料的制备,其中微米孔由Ki...  (本文共6页) 阅读全文>>

《Journal of Wuhan University of Technology(Materials Science Edition)》2014年01期
Journal of Wuhan University of Technology(Materials Science Edition)

Fabrication of in situ Ti_2AlN/TiAl Composites by Reaction Hot Pressing and Their Properties

Ti2AlN/TiAl composites with different volume fractions of reinforcement were successfully fabricated by hot-pressing sintering method(reaction hot pressing) using Ti, Al and TiN powders as starting materials. The synthesis process includes four stages: first, the reactions between Al and Ti powers and between Al and TiN powders respectively occur and result in TiAl3 phase; secondly, Al powders in the sample are exhau...  (本文共5页) 阅读全文>>