The effect of nitriding on the toughness and bending resistance of tool steels
Tipo
Artigo
Data de publicação
2008
Periódico
International Journal of Microstructure and Materials Properties
Citações (Scopus)
7
Autores
Vatavuk J.
Canale L.C.F.
Totten G.E.
Cardoso S.G.
Canale L.C.F.
Totten G.E.
Cardoso S.G.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
Recently a detailed study was performed with the nitrided and non-nitrided tool steels AISI H13, AISI D2, AISI D6, AISI M2 and K340. Different nitriding processes, including gas, salt bath and also salt bath plus diffusion heat treatment, were performed and compared. The performance of the tool steels was evaluated using bending tests and impact tests. Microstructure characterisation was performed using optical microscopy. The nitriding treatment prompts a reduction in the rupture modulus and absorbed energy in an unnotched impact specimen. Lower mechanical properties were obtained in the gas nitrided samples due to the deeper diffusion layers achieved by these thermochemical processes. The reduction in the white layer thickness by the diffusion treatment in the salt nitrided samples has no effect on the mechanical response of the tested samples. The results show that the impact absorption energy tests have the worst effect in terms of reduction due to the nitriding processes. © 2008, Inderscience Publishers.
Descrição
Palavras-chave
Assuntos Scopus
Diffusion heat treatment , Diffusion treatment , Mechanical response , Microstructure characterisation , Nitrided tool steel , Nitriding treatment , Thermo chemical process , White layer thickness