DEVELOPMENT OF NEW VALVE STEELS FOR APPLICATION IN HIGH PERFORMANCE ENGINES

Autor:	Alexandre Bellegard Farina, Rodrigo César Nascimento Liberto, Celso Antonio Barbosa
Jazyk:	English<br />Spanish; Castilian<br />Portuguese
Rok vydání:	2013
Předmět:	Ni-based alloys Valve steels Characterization Automotive valves. Materials of engineering and construction. Mechanics of materials TA401-492 Mining engineering. Metallurgy TN1-997 Technological innovations. Automation HD45-45.2
Zdroj:	Tecnologia em Metalurgia, Materiais e Mineração, Vol 10, Iss 4, Pp 329-335 (2013)
Druh dokumentu:	article
ISSN:	2176-1515 2176-1523
DOI:	10.4322/tmm.2013.043
Popis:	UNS N07751 and UNS N07080 alloys are commonly applied for automotive valves production for high performance internal combustion engines. These alloys present high hot resistance to mechanical strength, oxidation, corrosion, creep and microstructural stability. However, these alloys presents low wear resistance and high cost due to the high nickel contents. In this work it is presented the development of two new Ni-based alloys for application in high performance automotive valve as an alternative to the alloys UNS N07751 and UNS N07080. The new developed alloys are based on a high nickel-chromium austenitic matrix with dispersion of γ’ and γ’’ phases and containing different NbC contents. Due to the nickel content reduction in the developed alloys in comparison with these actually used alloys, the new alloys present an economical advantage for substitution of UNS N07751 and UNS N0780 alloys.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1377ecf8e52b4acb96fb903d5bd375f0 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF