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.
Study of the mechanical and metallurgical properties of sintered steels for valve seat inserts application
