TY - JOUR
T1 - Duplex surface treatment on microalloy steels by dehydrated paste pack boriding and pack carburizing
AU - López Perrusquia, N.
AU - Doñu Ruiz, M. A.
AU - García Bustos, E. D.
AU - lores Martínez, M.
AU - Urriolagoitia Calderón, G. M.
AU - Torres San Miguel, C. R.
N1 - Publisher Copyright:
© 2020
PY - 2020/12/1
Y1 - 2020/12/1
N2 - In this work, a novel duplex surface treatment is carried out on API X60 microalloy steels by boronizing and carburizing. Firstly, the dehydrated paste pack boriding (DPPB) on microalloy steels was carried out at a temperature of 1273 K for 8 h of exposure time. Then, the pack carburizing (PC) was conducted on borided steels at 1173 K temperature for four different exposure times. The layers formed by DPBP and DPBP+PC, were caracterized by X-ray difrraction, scanning electron microscopy, and energy dispersive spectroscopy. The results show that DPBP+PC promotes the formation of coatings outermost cementite layer with a range of depth (15.30–45.34 µm) over the boride layer. Hardness and Young's modulus of DPPB+PC were measured using the nanoindenter with a Berkovich diamond tip under load of 100 mN. The higher average indentation hardness (HIT=1.53±0.25 GPa) and Young's modulus (EIT=212.70±2.4 GPa) were characteristic of carburized layer as well as Fe2B layer was characterized by HIT=20.56±0.80 GPa, and EIT=300.9±15.57 GPa, these parameters have an important influence on wear resistance to improve the performance in practical applications.
AB - In this work, a novel duplex surface treatment is carried out on API X60 microalloy steels by boronizing and carburizing. Firstly, the dehydrated paste pack boriding (DPPB) on microalloy steels was carried out at a temperature of 1273 K for 8 h of exposure time. Then, the pack carburizing (PC) was conducted on borided steels at 1173 K temperature for four different exposure times. The layers formed by DPBP and DPBP+PC, were caracterized by X-ray difrraction, scanning electron microscopy, and energy dispersive spectroscopy. The results show that DPBP+PC promotes the formation of coatings outermost cementite layer with a range of depth (15.30–45.34 µm) over the boride layer. Hardness and Young's modulus of DPPB+PC were measured using the nanoindenter with a Berkovich diamond tip under load of 100 mN. The higher average indentation hardness (HIT=1.53±0.25 GPa) and Young's modulus (EIT=212.70±2.4 GPa) were characteristic of carburized layer as well as Fe2B layer was characterized by HIT=20.56±0.80 GPa, and EIT=300.9±15.57 GPa, these parameters have an important influence on wear resistance to improve the performance in practical applications.
KW - Diffusion
KW - Electron microscopy
KW - Indentation and hardness
KW - Microstructure
UR - http://www.scopus.com/inward/record.url?scp=85090033096&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2020.128573
DO - 10.1016/j.matlet.2020.128573
M3 - Artículo
AN - SCOPUS:85090033096
SN - 0167-577X
VL - 280
JO - Materials Letters
JF - Materials Letters
M1 - 128573
ER -