TY - JOUR
T1 - Effect of Hydrogen on the mechanical behavior on AISI 4140 with borided coatings
AU - Doñu Ruiz, M. A.
AU - Carranza Florida, S. C.
AU - López Perrusquia, N.
AU - Cortes Suarez, V. J.
AU - Vargas Caballero, J. C.
AU - Torres San Miguel, C. R.
N1 - Publisher Copyright:
© 2016 Trans Tech Publications, Switzerland.
PY - 2016
Y1 - 2016
N2 - In this work, the mechanical behavior on AISI 4140 with boride coating and hardened quenching-tempering was studies subsequently to boriding. The boriding is conducted at temperatures 1203 and 1233 K for 7 h, after that all samples at a temperature of 1143 K for 1 h and tempering 473 K were exposed for 1 h 30 minutes. The microstructural characterization was examined by scanning electron microscopy with saw-tooth morphology of boride coatings type Fe2B. Three-point bend test was used to study the effect of hydrogen cathodic charging on the mechanical behavior of AISI 4140 with boride coatings, the results show a reduction of ductility and 58.17% of indices of embrittlement (IH) and show a crack on the substrate due to interaction of hydrogen atom. Also, sample boride at 1203 K with hydrogen show a low decrease of the bending stress with respectively a sample boride without hydrogen and a decrease of the parameter (IH) with 35.32% due to the formation of boride coatings.
AB - In this work, the mechanical behavior on AISI 4140 with boride coating and hardened quenching-tempering was studies subsequently to boriding. The boriding is conducted at temperatures 1203 and 1233 K for 7 h, after that all samples at a temperature of 1143 K for 1 h and tempering 473 K were exposed for 1 h 30 minutes. The microstructural characterization was examined by scanning electron microscopy with saw-tooth morphology of boride coatings type Fe2B. Three-point bend test was used to study the effect of hydrogen cathodic charging on the mechanical behavior of AISI 4140 with boride coatings, the results show a reduction of ductility and 58.17% of indices of embrittlement (IH) and show a crack on the substrate due to interaction of hydrogen atom. Also, sample boride at 1203 K with hydrogen show a low decrease of the bending stress with respectively a sample boride without hydrogen and a decrease of the parameter (IH) with 35.32% due to the formation of boride coatings.
KW - Boride Coatings
KW - Hydrogen embrittlement
KW - Mechanical properties
KW - Three point bend test
UR - http://www.scopus.com/inward/record.url?scp=85014019262&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/DDF.371.8
DO - 10.4028/www.scientific.net/DDF.371.8
M3 - Artículo
SN - 1012-0386
VL - 371
SP - 8
EP - 13
JO - Defect and Diffusion Forum
JF - Defect and Diffusion Forum
ER -