The combination of precipitation and dispersion hardening in powder metallurgy produced Cu-Ti-Si alloy
- Institute of Nuclear Sciences 'Vinca', P.O.Box 522, 11001 Belgrade (Serbia)
- TCF, Bulevar Mihajla Pupina 176, 11070 Belgrade (Serbia)
Microstructure and microhardness properties of precipitation hardened Cu-Ti and precipitation/dispersion hardened Cu-Ti-Si alloys have been analyzed. Cu-1.2Ti and Cu-1.2Ti-3TiSi{sub 2} (wt.%) atomized powders were characterized before and after consolidation by HIP (Hot Isostatic Pressing). Rapidly solidified powders and HIP-ed compacts were subsequently subjected to thermal treatment in hydrogen at temperatures between 300 and 600 deg. C. Compared to Cu-Ti powder particles and compacts, obtained by the same procedure, the strengthening effect in Cu-1.2Ti-3TiSi{sub 2} powder particles and compacts was much greater. The binary and ternary powders both reveal properties superior to those of Cu-1.2Ti and Cu-1.2Ti-3TiSi{sub 2} compacts. Microhardness analysis as a function of the aging temperature of Cu-1.2Ti-3TiSi{sub 2} alloy shows an interaction between precipitation and dispersion hardening which offers possibilities for an application at elevated temperatures.
- OSTI ID:
- 21140762
- Journal Information:
- Materials Characterization, Journal Name: Materials Characterization Journal Issue: 8 Vol. 59; ISSN 1044-5803; ISSN MACHEX
- Country of Publication:
- United States
- Language:
- English
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