TY - JOUR
T1 - Tribological behavior of borided AISI 316L steel with reduced friction coefficient and enhanced wear resistance
AU - Hernández-Sánchez, Enrique
AU - Velázquez, Julio C.
AU - Castrejón-Flores, José L.
AU - Chino-Ulloa, Alexis
AU - Torres Avila, Itzel P.
AU - Carrera-Espinoza, Rafael
AU - Yescas-Hernández, Jorge A.
AU - Orozco-Alvarez, Carlos
N1 - Publisher Copyright:
©2018 The Japan Institute of Metals and Materials.
PY - 2019
Y1 - 2019
N2 - This study evaluates the tribological behavior of borided AISI 316L steel. The treatment time was set to 2, 4, and 6 h at temperatures of 850, 900, and 950°C for each time duration. The morphology and microstructure of the boride layers were analyzed by scanning electron microscopy (SEM) and X ray diffraction (XRD), respectively. The mechanical properties were evaluated by an instrumented nanoindentation test. The tribological behaviors of the layers were evaluated using a sand/rubber apparatus following the ASTM G-65 standard. The friction coefficient of the boride layers was estimated by means of the tribological pin-on-disk test. The results show that the experimental parameters had a clear influence on the thickness of the boride layers and on their mechanical properties. The volume loss was established in the range of 0.0741 « 0.011 µg to 1.6148 « 0.150 µg. Wear mechanisms such as adhesion and micro-fatigue were mainly observed in the samples exposed for 6 h at 950°C. Finally, the friction coefficient was reduced from 0.7 for the as-received material down to 0.29 for the borided samples. The wear mechanisms were discussed as a function of the scanning electron microscopy observations. It is possible to conclude that single-phase layers of Fe 2 B are more apt to face wear than the FeB/Fe 2 B biphasic layers. [doi:10.2320/matertrans.M2018282]
AB - This study evaluates the tribological behavior of borided AISI 316L steel. The treatment time was set to 2, 4, and 6 h at temperatures of 850, 900, and 950°C for each time duration. The morphology and microstructure of the boride layers were analyzed by scanning electron microscopy (SEM) and X ray diffraction (XRD), respectively. The mechanical properties were evaluated by an instrumented nanoindentation test. The tribological behaviors of the layers were evaluated using a sand/rubber apparatus following the ASTM G-65 standard. The friction coefficient of the boride layers was estimated by means of the tribological pin-on-disk test. The results show that the experimental parameters had a clear influence on the thickness of the boride layers and on their mechanical properties. The volume loss was established in the range of 0.0741 « 0.011 µg to 1.6148 « 0.150 µg. Wear mechanisms such as adhesion and micro-fatigue were mainly observed in the samples exposed for 6 h at 950°C. Finally, the friction coefficient was reduced from 0.7 for the as-received material down to 0.29 for the borided samples. The wear mechanisms were discussed as a function of the scanning electron microscopy observations. It is possible to conclude that single-phase layers of Fe 2 B are more apt to face wear than the FeB/Fe 2 B biphasic layers. [doi:10.2320/matertrans.M2018282]
KW - Boriding
KW - Coefficient of friction
KW - Tribological behavior
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=85062391303&partnerID=8YFLogxK
U2 - 10.2320/matertrans.M2018282
DO - 10.2320/matertrans.M2018282
M3 - Artículo
SN - 1345-9678
VL - 60
SP - 156
EP - 164
JO - Materials Transactions
JF - Materials Transactions
IS - 1
ER -