한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)
- 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part2
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- Pages.725-726
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- 2006
Ultra-fine Grained and Dispersion-strengthened Titanium Materials Manufactured by Spark Plasma Sintering
- Handtrack, Dirk (Technische Universitaet Dresden, Institute of Materials Science) ;
- Sauer, Christa (Technische Universitaet Dresden, Institute of Materials Science) ;
- Kieback, Bernd (Technische Universitaet Dresden, Institute of Materials Science)
- 발행 : 2006.09.24
초록
Ultra-fine grained and dispersion-strengthened titanium materials (Ti-Si, Ti-C, Ti-Si-C) have been produced by high energy ball milling and spark plasma sintering (SPS). Silicon or/and carbon were milled together with the titanium powder to form nanometer-sized and homogeneously distributed titanium silicides or/and carbides as dispersoids, that should prevent grain coarsening during the SPS compaction and contribute to strengthening of the material. The microstructures and the mechanical properties showed that strength, hardness and wear resistance of the sintered materials have been significantly improved by the mechanisms of grain refinement and dispersion strengthening. The use of an organic fluid as carrier of the dispersoid forming elements caused a significant increase in ductility.
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