Avaliação da resistência ao desgaste dos aços SAE 52100 e SAE 1045 lubrificados com biodiesel e óleo diesel comercial

Detalhes bibliográficos
Ano de defesa: 2015
Autor(a) principal: Castro, Victor Velho de lattes
Orientador(a): Santos, Carlos Alexandre dos
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul
Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia e Tecnologia de Materiais
Departamento: Faculdade de Engenharia
País: Brasil
Palavras-chave em Português:
Área do conhecimento CNPq:
Link de acesso: http://tede2.pucrs.br/tede2/handle/tede/6233
Resumo: The present study aims to evaluate the wear resistance of two different materials (SAE 1045 steels and SAE 52100) in different microstructure conditions without lubrification and using biodiesel (B100), biodiesel-diesel blend (B50) and commercial diesel fuel (B7). Two samples of each material were subjected to hardening heat treatment of quenching (temperature: 850 °C and cooled in water in SAE 1045 samples and temperature: 830°C cooled in oil in SAE 52100 steel samples) followed by tempering (300°C in samples of SAE 1045 steel and 100°C and 200°C in SAE 52100 steel samples to 100 ° C). It was obtained samples with four different hardness and different microstructure conditions (tempered martensite in steel SAE 1045 and tempered martensite with Chromium Carbide in steel SAE 52100). The experiments will be conducted in a pin-on-disk tribometer, with rotation of 300 RPM, 1,5kg load and 4400 m distance covered, according to the recommendations of ASTM G99-04, followed by the wear track surface hardness measurement and evolution of the samples wear surface with a Scanning Electron Microscope. At the end of the trials, there was a variation of wear resistance between different materials, different microstructures and different lubricants applied in the test. The results showed a tendency to decrease in wear tests with B100 biodiesel lubrication.