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Sintered Valve Seat Inserts – Microstructural Characterisation

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Abstract:

This work presents aspects related to new sintered materials for valve seat inserts application. Two types of materials were evaluated. The materials were made using powder metallurgy technique from a basic mixture of high-speed steel (AISI M3/2), iron and carbide powders. The microstructures of these materials before and after heat treatment are presented. Under the heat treatment condition, the activation of the diffusion mechanism among phases was promoted and a better distribution of the Cu phases along the matrix was achieved. The results indicate that the materials under development have a potential for commercial application as valve seat inserts.

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Periodical:

Materials Science Forum (Volumes 530-531)

Pages:

65-70

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.530-531.65

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Online since:

November 2006

Authors:

E.S. Jesus Filho, Edilson Rosa Barbarosa Jesus, Lucio Salgado, S.L. Jesus, Marco Antonio Colosio, José Carlos Santos, S. Yoshida, C.H. Sartori, J.L. Rossi

Keywords:

Heat Treatment, High Speed Steel AISI M3/2, Powder Metallurgy (PM), Valve Seat Insert

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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