In Situ Reinforcement of Ti6Al4V Matrix Composites by Polymer-Derived-Ceramics Phases

被引：10

作者：

Fabrizi, Alberto ^{[1
]}

Bonollo, Franco ^{[1
]}

Colombo, Paolo ^{[2
,3
]}

Biasetto, Lisa ^{[1
]}

机构：

[1] Univ Padua, Dept Management & Engn, I-36100 Vicenza, Italy

[2] Univ Padua, Dept Ind Engn, I-35131 Padua, Italy

[3] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

来源：

ADVANCED ENGINEERING MATERIALS | 2015年 / 17卷 / 06期

关键词：

BEHAVIOR; MICROSTRUCTURE; NANOCOMPOSITES; PYROLYSIS;

D O I：

10.1002/adem.201400362

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti6Al4V-based metal matrix composites (MMCs) are successfully synthesized via a novel process route. Ti6Al4V powder is premixed with a solid preceramic polymer used as precursor for the in situ formation of a ceramic phase dispersed at the micrometer range. Ball-milling is used to intimately mix the powders. After the pyrolysis and sintering step, a Ti5Si3 and TiC dispersion within the Ti6Al4V equiaxed grains matrix is formed. The effect of the volume fraction of the polymer-derived ceramic phase in the Ti6Al4V matrix is investigated in terms of Vickers hardness and wear resistance. The introduction of 10 vol% of ceramic reinforcement produces a homogeneous structure and results in a compact material with improved integrity and enhanced mechanical properties compared to standard cast alloy or Ti6Al4V-based composites reported in the literature.

引用

页码：866 / 875

页数：10

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