TY - JOUR
T1 - Multipass Scratch Behavior of Borided and Nitrided H13 Steel
AU - Vega-Morón, R. C.
AU - Rodríguez-Castro, G. A.
AU - Jiménez-Tinoco, L. F.
AU - Meneses-Amador, A.
AU - Méndez-Méndez, J. V.
AU - Escobar-Hernández, J.
AU - Reséndiz-Calderón, C. D.
AU - Nava-Sánchez, J. L.
N1 - Publisher Copyright:
© 2018, ASM International.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - AISI H13 steel was subjected to boriding and nitriding; its performance was evaluated by the progressive load scratch test, and then by the multipass scratch test (MPST), to evaluate the accumulated damage. Boriding and nitriding were carried out at a temperature of 800 and 580 °C, respectively, both treatments for 1 and 5 h of exposure time. In scratch test, a load range of 3-90 N was used for borides; a higher range (3-180 N) was chosen for nitrides. Critical loads (Lc) were estimated based on optical microscope observations of the scratch tracks. Failure mechanisms and residual depths were examined by scanning electronic microscope and optical profilometry. Finally, using fractions of Lc, MPST was applied on uncoated and coated samples, for 25, 50, 75 and 100 unidirectional scratch cycles. The coefficient of friction (COF) evolution was recorded and analyzed. A decrease in COF was observed as cycles go through; it was initially higher in uncoated sample; moreover, it was observed that normal load was determinant in its behavior, regardless of the treatment time. Nitrided samples exhibited less catastrophic failures over borided ones, also showed a better volume loss/load ratio performance, from 6 to 8 times better compared to borided samples.
AB - AISI H13 steel was subjected to boriding and nitriding; its performance was evaluated by the progressive load scratch test, and then by the multipass scratch test (MPST), to evaluate the accumulated damage. Boriding and nitriding were carried out at a temperature of 800 and 580 °C, respectively, both treatments for 1 and 5 h of exposure time. In scratch test, a load range of 3-90 N was used for borides; a higher range (3-180 N) was chosen for nitrides. Critical loads (Lc) were estimated based on optical microscope observations of the scratch tracks. Failure mechanisms and residual depths were examined by scanning electronic microscope and optical profilometry. Finally, using fractions of Lc, MPST was applied on uncoated and coated samples, for 25, 50, 75 and 100 unidirectional scratch cycles. The coefficient of friction (COF) evolution was recorded and analyzed. A decrease in COF was observed as cycles go through; it was initially higher in uncoated sample; moreover, it was observed that normal load was determinant in its behavior, regardless of the treatment time. Nitrided samples exhibited less catastrophic failures over borided ones, also showed a better volume loss/load ratio performance, from 6 to 8 times better compared to borided samples.
KW - boriding
KW - coefficient of friction
KW - damage
KW - multipass scratch
KW - nitriding
KW - scratch
UR - http://www.scopus.com/inward/record.url?scp=85048571687&partnerID=8YFLogxK
U2 - 10.1007/s11665-018-3410-y
DO - 10.1007/s11665-018-3410-y
M3 - Artículo
SN - 1059-9495
VL - 27
SP - 3886
EP - 3899
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 8
ER -