Production of a laser textured 316L stainless steel reinforced with CuCoBe + diamond composites by hot pressing: Influence of diamond particle size on the hardness and tribological behaviour

Two composite blends of CuCoBe and synthetic diamond with different particle sizes, (0.1–0.5 μm and 40–60 μm), were obtained by mechanical alloying and were used as a reinforcement of a laser textured 316L stainless steel in this work. Consolidation/sintering of the powders was conducted by hot pres...

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Bibliographic Details
Published in:Tribology international 2020-06, Vol.146, p.106056, Article 106056
Main Authors: Cunha, A., Ferreira, R., Trindade, B., Silva, F.S., Carvalho, O.
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Coefficient of friction
Diamond composites
Diamonds
Hot pressing
Laser beam texturing
Laser sintering
Laser texturing
Mechanical alloying
Piston rings
Stainless steel
Tribological behaviour
Tribology
Wear rate
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Summary:Two composite blends of CuCoBe and synthetic diamond with different particle sizes, (0.1–0.5 μm and 40–60 μm), were obtained by mechanical alloying and were used as a reinforcement of a laser textured 316L stainless steel in this work. Consolidation/sintering of the powders was conducted by hot pressing. From all the samples studied, the 316L stainless steel reinforced with the CuCoBe + diamond (40–60 μm) composite presented the lowest values of specific wear rate and coefficient of friction (5.83 × 10−7 mm3/N.m and 0.14, respectively), showing the potential of this material in applications where good tribological behaviour is required, e.g. for the fabrication of improved automotive piston rings. •New approach for producing textured diamond-reinforced 316L steel matrix composites.•This new approach might be used to selectively reinforce functional surfaces.•Reinforced 316L steel matrix composites with improved tribological properties.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2019.106056