Measurement of fracture toughness in AISI 1018 borided steels by vickers indentation

I. Campos-Silva, N. López-Perrusquia, M. Ortiz-Domínguez, U. Figueroa-López, E. Hernández-Sánchez

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

This study evaluates the fracture toughness of Fe2B boride layers formed by the paste boriding thermochemical process on an AISI 1018 steel surface. The samples were placed in acrylic molds for the impregnation of boron carbide paste with thickness of 4mm over the sample surfaces to produce the diffusion into the steel. The aforementioned treatment considered one temperature, T= 1273 K, and three exposure times t=5, 6 and 8 h. Later, the borided samples were prepared metallographically to determine the mean values of the layer thicknesses and to produce Vickers microindentations at 45 μm from the surface, applying four loads (1.9, 2.9, 4.9 and 9.8 N). The microcracks generated at the corners of the Vickers microindentation were considered as experimental parameters, which are introduced into two Palmqvist cracks models to determine their corresponding fracture toughness KC. As a result, the experimental parameters, such as exposure time and applied load are compared with the resulting fracture toughness of the borided phase. © (2009) Trans Tech Publications, Switzerland.
Original languageAmerican English
Pages675-680
Number of pages606
DOIs
StatePublished - 1 Jan 2009
EventDefect and Diffusion Forum -
Duration: 1 Jan 2016 → …

Conference

ConferenceDefect and Diffusion Forum
Period1/01/16 → …

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Steel
fracture strength
indentation
Indentation
Fracture toughness
steels
Ointments
microhardness
Boron Compounds
Boriding
Boron carbide
boron carbides
borides
Borides
microcracks
Molds
Microcracks
Impregnation
Switzerland
Acrylics

Cite this

Campos-Silva, I., López-Perrusquia, N., Ortiz-Domínguez, M., Figueroa-López, U., & Hernández-Sánchez, E. (2009). Measurement of fracture toughness in AISI 1018 borided steels by vickers indentation. 675-680. Paper presented at Defect and Diffusion Forum, . https://doi.org/10.4028/www.scientific.net/DDF.283-286.675
Campos-Silva, I. ; López-Perrusquia, N. ; Ortiz-Domínguez, M. ; Figueroa-López, U. ; Hernández-Sánchez, E. / Measurement of fracture toughness in AISI 1018 borided steels by vickers indentation. Paper presented at Defect and Diffusion Forum, .606 p.
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Campos-Silva, I, López-Perrusquia, N, Ortiz-Domínguez, M, Figueroa-López, U & Hernández-Sánchez, E 2009, 'Measurement of fracture toughness in AISI 1018 borided steels by vickers indentation', Paper presented at Defect and Diffusion Forum, 1/01/16 pp. 675-680. https://doi.org/10.4028/www.scientific.net/DDF.283-286.675

Measurement of fracture toughness in AISI 1018 borided steels by vickers indentation. / Campos-Silva, I.; López-Perrusquia, N.; Ortiz-Domínguez, M.; Figueroa-López, U.; Hernández-Sánchez, E.

2009. 675-680 Paper presented at Defect and Diffusion Forum, .

Research output: Contribution to conferencePaper

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N2 - This study evaluates the fracture toughness of Fe2B boride layers formed by the paste boriding thermochemical process on an AISI 1018 steel surface. The samples were placed in acrylic molds for the impregnation of boron carbide paste with thickness of 4mm over the sample surfaces to produce the diffusion into the steel. The aforementioned treatment considered one temperature, T= 1273 K, and three exposure times t=5, 6 and 8 h. Later, the borided samples were prepared metallographically to determine the mean values of the layer thicknesses and to produce Vickers microindentations at 45 μm from the surface, applying four loads (1.9, 2.9, 4.9 and 9.8 N). The microcracks generated at the corners of the Vickers microindentation were considered as experimental parameters, which are introduced into two Palmqvist cracks models to determine their corresponding fracture toughness KC. As a result, the experimental parameters, such as exposure time and applied load are compared with the resulting fracture toughness of the borided phase. © (2009) Trans Tech Publications, Switzerland.

AB - This study evaluates the fracture toughness of Fe2B boride layers formed by the paste boriding thermochemical process on an AISI 1018 steel surface. The samples were placed in acrylic molds for the impregnation of boron carbide paste with thickness of 4mm over the sample surfaces to produce the diffusion into the steel. The aforementioned treatment considered one temperature, T= 1273 K, and three exposure times t=5, 6 and 8 h. Later, the borided samples were prepared metallographically to determine the mean values of the layer thicknesses and to produce Vickers microindentations at 45 μm from the surface, applying four loads (1.9, 2.9, 4.9 and 9.8 N). The microcracks generated at the corners of the Vickers microindentation were considered as experimental parameters, which are introduced into two Palmqvist cracks models to determine their corresponding fracture toughness KC. As a result, the experimental parameters, such as exposure time and applied load are compared with the resulting fracture toughness of the borided phase. © (2009) Trans Tech Publications, Switzerland.

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