Microstructure and wear resistance of spray-formed supermartensitic stainless steel
AUTOR(ES)
Zepon, Guilherme, Kiminami, Claudio Shyinti, Botta Filho, Walter José, Bolfarini, Claudemiro
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
25/02/2013
RESUMO
Since the early 90's the oil industry has been encouraging the development of corrosion and wear resistant alloys for onshore and offshore pipeline applications. In this context supermartensitic stainless steel was introduced to replace the more expensive duplex stainless steel for tubing applications. Despite the outstanding corrosion resistance of stainless steels, their wear resistance is of concern. Some authors reported obtaining material processed by spray forming, such as ferritic stainless steel, superduplex stainless steel modified with boron, and iron-based amorphous alloys, which presented high wear resistance while maintaining the corrosion performance1,2. The addition of boron to iron-based alloys promotes the formation of hard boride particles (M2B type) which improve their wear resistances3-9. This work aimed to study the microstructure and wear resistance of supermartensitic stainless steel modified with 0.3 wt. (%) and 0.7 wt. (%) processed by spray forming (SF-SMSS 0.3%B and SF-SMSS 0.7%B, respectively). These boron contents were selected in order to improve the wear resistance of supermartensitic stainless steel through the formation of uniformly distributed borides maintaining the characteristics of the corrosion resistant matrix. SF-SMSS 0.7%B presents an abrasive wear resistance considerably higher than spray-formed supermartensitic stainless steel without boron addition (SF-SMSS).
Documentos Relacionados
- Avaliação da resistência ao desgaste de aços inoxidáveis conformados por spray
- Effects of post weld heat treatments on the microstructure and mechanical properties of dissimilar weld of supermartensític stainless steel
- Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel
- Corrosion and Wear Resistance of Carbon Films Obtained by Electrodeposition on Ferritic Stainless Steel
- Wear resistance of AISI 304 stainless steel submitted to low temperature plasma carburizing