TY - JOUR
T1 - Effect of Heat Treatment on the Electrochemical and Mechanical Behavior of the Ti6Al4V Alloy
AU - Chávez-Díaz, Mercedes Paulina
AU - Escudero-Rincón, María Lorenza
AU - Chao, Jesús
AU - Arce-Estrada, Elsa Miriam
AU - Cabrera-Sierra, Román
N1 - Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society and ASM International.
PY - 2021/8
Y1 - 2021/8
N2 - The effects of heat treatment on the hardness and electrochemical behavior of the Ti6Al4V alloy were studied. Two heat treatments were performed: one below (800 °C) and the other above (1050 °C) its beta transformation temperature (TTRANSUS= 980 ± 20 °C) and cooled using three conditions: water quenching, normalizing, and furnace. A microstructure observed using Optical Microscopy showed dependence on the heat treatment temperature applied; mainly three microstructures were obtained: martensitic, globular, and lamellar. Besides, alpha and beta phases were characterized by X-ray diffraction (XRD) technique. The Berkovich tests were performed to measure the hardness and reduced modulus (Er). The Ti6Al4V1050+AC alloy treated at 1050 °C and air-cooled exhibited hardness values closer to those of the Ti6Al4V as-received alloy. Electrochemical tests were carried out to analyze the electrochemical behavior after 7-day immersion in Hank’s solution at 37 °C and pH 7.40. Open Circuit Potentials (EOCP) showed less negative values for Ti6Al4V800+AC and Ti6Al4V1050+AC alloys, suggesting ennoblement of these materials. Furthermore, these alloys exhibited an outstanding electrochemical behavior compared to the Ti6Al4V as-received alloy by Electrochemical Impedance Spectroscopy (EIS) technique.
AB - The effects of heat treatment on the hardness and electrochemical behavior of the Ti6Al4V alloy were studied. Two heat treatments were performed: one below (800 °C) and the other above (1050 °C) its beta transformation temperature (TTRANSUS= 980 ± 20 °C) and cooled using three conditions: water quenching, normalizing, and furnace. A microstructure observed using Optical Microscopy showed dependence on the heat treatment temperature applied; mainly three microstructures were obtained: martensitic, globular, and lamellar. Besides, alpha and beta phases were characterized by X-ray diffraction (XRD) technique. The Berkovich tests were performed to measure the hardness and reduced modulus (Er). The Ti6Al4V1050+AC alloy treated at 1050 °C and air-cooled exhibited hardness values closer to those of the Ti6Al4V as-received alloy. Electrochemical tests were carried out to analyze the electrochemical behavior after 7-day immersion in Hank’s solution at 37 °C and pH 7.40. Open Circuit Potentials (EOCP) showed less negative values for Ti6Al4V800+AC and Ti6Al4V1050+AC alloys, suggesting ennoblement of these materials. Furthermore, these alloys exhibited an outstanding electrochemical behavior compared to the Ti6Al4V as-received alloy by Electrochemical Impedance Spectroscopy (EIS) technique.
UR - http://www.scopus.com/inward/record.url?scp=85107473139&partnerID=8YFLogxK
U2 - 10.1007/s11661-021-06330-5
DO - 10.1007/s11661-021-06330-5
M3 - Artículo
AN - SCOPUS:85107473139
SN - 1073-5623
VL - 52
SP - 3570
EP - 3584
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 8
ER -