Heat Treatment of Sintered Valve Seat Inserts
| Autor: | Maurilio Pereira Gomes, Jesualdo Luiz Rossi, Marco Antonio Colosio, Cristiano Stefano Mucsi, Evandro Giuseppe Betini, L.A.M. Reis, C.P. Couto, Igor Passos dos Santos |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Valve seat insert
Materials science 02 engineering and technology engineering.material Continuous cooling transformation Heat treatment Iron powder Valve seat Powder metallurgy 0502 economics and business General Materials Science Tempering Composite material Materials of engineering and construction. Mechanics of materials Quenching Mechanical Engineering High-speed steel 05 social sciences 021001 nanoscience & nanotechnology Condensed Matter Physics Mechanics of Materials Tool steel engineering TA401-492 0210 nano-technology 050203 business & management |
| Zdroj: | Materials Research v.21 n.5 2018 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 21, Iss 5 (2018) Materials Research, Volume: 21, Issue: 5, Article number: e20180068, Published: 02 AUG 2018 |
| Popis: | The characterization of sintered valve seat inserts (VSIs) after being subjected to different heat treatment operations has been carried out. The VSIs were obtained from three different alloys by mixing iron powder with AISI M3:2, AISI M2 high-speed steels, and AISI D2 tool steel. After sintering, the VSI were quenched in air followed by double tempering at seven different temperatures. The cooling rate during air quenching was measured by means of a thermocouple type k attached to a data acquisition system. The characterization of the mechanical and physical properties of the VSIs was achieved by measuring relative density, apparent hardness and crush radial strength. The resulting microstructures for the sintered parts were interpreted using the isothermal and continuous cooling transformation diagrams for similar alloys. The VSI obtained with AISI M3:2 and AISI M2 high-speed steels after air quenching and double tempering at 600 oC showed the best results in terms of apparent hardness and crush radial strength. |
| Databáze: | OpenAIRE |
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