TY - GEN
T1 - Anisotropy of boride layers
T2 - Effect on the mechanical properties of AISI 4140 borided steels
AU - Campos-Silva, I.
AU - López-Perrusquia, N.
AU - Hernández-Sánchez, E.
AU - Ortíz-Domínguez, M.
AU - Bravo-Bárcenas, D.
AU - Martínez-Trinidad, J.
PY - 2010
Y1 - 2010
N2 - The growth of iron borides over the surface of different steels is of high anisotropy. It was determined that the anisotropy of borided phases reveals a significant instability of properties in service. One of the techniques to determine the effect of anisotropy on the mechanical properties of boride layers is the induced-fracture by Vickers microindentation. During the present work, the fracture toughness (KC) of the Fe2B hard coatings has been estimated at the surface of AISI 4140 borided steels. The force criterion of fracture toughness was determined from the extent of brittle cracks originating at the tips of an indenter impression. The indentation loads were established between 1.9 to 9.8 N at three different distances from the borided surface. The KC values were expressed as a function of temperature, treatment time and the indentation distances from the surface. Likewise, the adherence of the coated system was evaluated by Rockwell-C indentation, where the borided steel showed sufficient adhesion.
AB - The growth of iron borides over the surface of different steels is of high anisotropy. It was determined that the anisotropy of borided phases reveals a significant instability of properties in service. One of the techniques to determine the effect of anisotropy on the mechanical properties of boride layers is the induced-fracture by Vickers microindentation. During the present work, the fracture toughness (KC) of the Fe2B hard coatings has been estimated at the surface of AISI 4140 borided steels. The force criterion of fracture toughness was determined from the extent of brittle cracks originating at the tips of an indenter impression. The indentation loads were established between 1.9 to 9.8 N at three different distances from the borided surface. The KC values were expressed as a function of temperature, treatment time and the indentation distances from the surface. Likewise, the adherence of the coated system was evaluated by Rockwell-C indentation, where the borided steel showed sufficient adhesion.
KW - Adhesion
KW - Anisotropy
KW - Boride layers
KW - Boriding
KW - Fracture toughness
KW - Indentation
UR - http://www.scopus.com/inward/record.url?scp=77952268115&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/DDF.297-301.142
DO - 10.4028/www.scientific.net/DDF.297-301.142
M3 - Contribución a la conferencia
AN - SCOPUS:77952268115
SN - 3908451809
SN - 9783908451808
VL - 297-301
SP - 142
EP - 147
BT - Diffusion in Solids and Liquids V
PB - Trans Tech Publications Ltd
ER -