Microstructure and Properties of Nickel-based C276 Alloy Coatings by PTA on AISI 316L and API 5L X70 Steel Substrates
AUTOR(ES)
Ferreira, Luciano da Silva, Graf, Karin, Scheid, Adriano
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
2015-02
RESUMO
This work assessed Ni-based C276 alloy coatings by PTA with different degree of interaction with AISI 316L and API 5L X70 steel substrates. Track geometry, dilution and microstructure of coatings were evaluated by optical, scanning electron microscopy and X-ray diffraction. Properties were evaluated by hardness and wear tests. Microstructure exhibited austenite Ni-FCC dendrites and interdendrictic regions containing carbides. Dilution from 4,9 to 25,4% for coatings on API 5L X70 leaded to hardness ranging from 283 to 243 HV0,5. Otherwise, dilution between 22,3 and 41,5% for coatings on AISI 316L induced hardness from 267 to 225 HV0,5. Higher interaction with the substrate leaded to 19,8% increase of mass loss rate on API 5L X70 coatings. The slight difference for coatings properties deposited on different substrates indicated that the degree of interaction was the most significant factor.
Documentos Relacionados
- Estudo dos processos de corrosão de aços API 5L X70 em contato com alguns dos solos do Brasil
- Efeito da temperatura sobre a medição de tensão por ondas Lcr em aços API 5L X70
- Effect of Rolling in the Recrystallization Temperature Region Associated with a Post-Heat Treatment on the Microstructure, Crystal Orientation, and Mechanical Properties of API 5L X70 Pipeline Steel
- Avaliação da tenacidade à fratura de aço API 5L X70 utilizado na fabricação de dutos transportadores de gás e petróleo
- Analysis of the corrosion scales formed on API 5L X70 and X80 steel pipe in the presence of CO2