Szczegóły publikacji
Opis bibliograficzny
Structure and properties of grain-refined $Al-20wt%$ $Zn$ sand cast alloy — Struktura i właściwości zmodyfikowanego stopu $Al-20$ wag. % $Zn$ odlanego do formy piaskowej / W. K. KRAJEWSKI, J. BURAŚ, M. Żurakowski, A. L. Greer // Archives of Metallurgy and Materials / Polish Academy of Sciences. Committee of Metallurgy. Institute of Metallurgy and Materials Science ; ISSN 1733-3490 . — 2009 — vol. 54 iss. 2, s. 329–334. — Bibliogr. s. 334. — “Faculty of Foundry Engineering during 90 years of the AGH University of Science and Technology” : Krakow, 28–29 May 2009. — Warszawa ; Kraków : PAS. Committee of Metallurgy. Institute of Metallurgy and Materials Science, 2009
Autorzy (4)
- AGHKrajewski Witold K.
- AGHBuraś Janusz
- Żurakowski M.
- Greer Alan Lindsay
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 47196 |
|---|---|
| Data dodania do BaDAP | 2009-10-05 |
| Tekst źródłowy | URL |
| Rok publikacji | 2009 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Archives of Metallurgy and Materials |
Abstract
Recent foundry industry requires a development of cast alloys whose melting is both energy saving and environmentally friendly; these are two important priorities of the EC programme. The Al - based cast alloys with increased Zn content could response to these demands because of their good mechanical properties, especially the strength and damping ones, and also relatively low melting temperatures. However, the AlZn - based alloys require grain refining to improve their plastic properties. The presented work is devoted to structural characteristics of the grain - refined high - zinc aluminium alloy Al - 20 wt% Zn. The system studied was Al - 20 wt% Zn alloy (AlZn20), Zn - 4.6 wt% Ti master alloy (ZnTi4 MA), ZnAl - 4 wt% Ti (ZnAl -Ti4 MA) as well as the traditional refiners Al - 5 wt% Ti - 1 wt% B (AlTi5B1 MA) and Al - 3 wt% Ti - 0.15 wt% C (AlTi3C0.15 MA). SEM (scanning electron microscopy), LM (light microscopy) and TA (thermal analysis) investigations showed high effectiveness of the used master alloys as grain refiners of the inoculated with them AlZn20 alloy. The initial examinations of the damping properties were performed using an ultrasonic pulse - echo method. The obtained results showed, that attenuation coefficient of the grain refined AlZn20 alloy, naturally aged before casting during I year, decreases by about 10 - 30 % together with increased structural fineness. It was stated that the higher grain refinement of the examined AlZn20 sand cast alloy, the higher decrease of its attenuation coefficient.
