The influence of cutting speed in austenitic stainless steel machining: Study of specific force coefficients

Fernández-Abia, A.I.; Barreiro, J.; Lacalle, Luís Norberto López de; Urbicain, G.; Paradela, I.

doi:10.1063/1.4707604

Cited by 1 publication

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Up to now, few reports are available on the precipitation of topological close-packed phases during high temperature oxidation process. In order to obtain a higher quality coated surface, many researchers have carried out related research, for example, Fernande-Abia proposed a mechanistic model for cutting forces in turning with nose radius tools [23][24][25][26]. In addition, generally MCrAlY coatings were widely deposited on superalloy by thermal spray technology including low-pressure plasma spraying, air plasma spraying and high velocity oxy/air fuel, physical vapor deposition and electron beam-physical vapor deposition, depending on the coating technical requirements.…”

Section: Introductionmentioning

confidence: 99%

Interdiffusion Behaviour of NiCoCrAlY Coating and N5 Single Crystal Superalloy

et al. 2020

View full text Add to dashboard Cite

This paper aims at investigating the microstructure and phases evolution of single crystal superalloy/high temperature protective coating during high temperature static oxidation, and exploring the influence of element interdiffusion behaviour on microstructure and phase evolution of the single crystal superalloy substrate. A NiCoCrAlY high-temperature protective coating was deposited on the Ni-based single-crystal superalloy by low-pressure plasma spraying technology. The coated samples were subjected to static oxidation for 200 h at a constant temperature of 1100 • C. Scanning electron microscope, energy dispersive spectrometer and X-ray diffraction were used to characterise the microstructure and phase after interdiffusion between the coating and the substrate at high temperature. The results showed that a dense thermally grown oxide layer was formed on the surface of the NiCoCrAlY coating after oxidation for over 100 h. The only interdiffusion zone was formed after oxidation for 50 h, while both interdiffusion zone and secondary reaction zone could be observed after oxidation for over 100 h. The thickness of interdiffusion zone and secondary reaction zone is increased with the extension of oxidation time, and the grain growth of topological close-packed phase in the secondary reaction zone is found. Al, Cr and Co in the coating diffuse from the coating to the substrate, while Ni and refractory materials like Ta, Mo, Re and W diffuse from the coating to the substrate. The interdiffusion of coating and substrate leads to the instability of γ/γ phase in the substrate, which finally results in the formation of W, Re and Cr-rich needle-like topological close-packed phase in the substrate.

show abstract

Section: Introductionmentioning

confidence: 99%