Preparation, Microstructure Control and Properties of Ti3AlC2 / TiAl Matrix Composites View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2013-2015

FUNDING AMOUNT

250000 CNY

ABSTRACT

As the new light-weight high-temperature structural material, TiAl intermetallic compounds have great potential application in aerospace engine, energy and automotive fields. But the bottleneck problems including poor room temperature ductility and high-temperature oxidation resistance limit their application. Layered ternary carbide Ti3AlC2 which combines many of the merits of both metals and ceramics, is the best reinforcement for TiAl intermetallic compound. In this project, the key scientific problems of reinforcement dispersion and interface combination which restrict the realizing of composite effect during the preparation process of Ti3AlC2/TiAl matrix composites are investigated. The design criterion of composite interface is established. The interacting between Ti3AlC2 reinforcement and matrix, and the formation mechanism of composite interface are revealed, so as to realize the effective control of composite interface and structure. By studying on the relationship of the processes, microstructure and properties of the composites, the coupling rule of composite structure and mechanical behavior are demonstrated, and the strengthening-toughening mechanism is discussed. By the high-temperature oxidation experiments, the high-temperature oxidation rule and the main influencing factors are analyzed, the hig More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=51201094

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