TY - JOUR
T1 - Effect of milling energy on phase transformation of Ti-Ni powders during mechanical alloying
AU - Hernández-Maya, Luis Gerardo
AU - Zapata-Peñasco, Icoquih
AU - Rivera-Olvera, Jesús Noé
AU - Garibay-Febles, Vicente
AU - Díaz-Barriga Arceo, Lucía Graciela
N1 - Publisher Copyright:
© 2022 Canadian Institute of Mining, Metallurgy and Petroleum.
PY - 2023
Y1 - 2023
N2 - The effect of milling energy on the phase evolution of mechanically alloyed Ti–Ni powders is reported. Alloys were produced by low-energy and high-energy mechanical alloying (LEMA and HEMA, respectively). Powders milled for different times were characterised by X-ray diffraction and scanning electron microscopy. The phase transformations of powders milled by LEMA and HEMA before amorphisation are presented. During LEMA, TiNi, TiNi3, Ti3Ni4, and Ti2Ni were formed at 50 and 100 h. At these times, the results were consistent with the Ti–Ni equilibrium phase diagram. Up to 7.27 wt% of TiNi with a crystallite size of 32.63 ± 0.01 nm appeared at 50–75 h. During HEMA, iron contamination inhibited the formation of the TiNi phase at short milling times, and up to 47.9% of Fe0.2Ni4.8Ti5 was generated. These results indicate that amorphisation and heat treatment are not the only methods of promoting phase transformation in Ti–Ni alloys.
AB - The effect of milling energy on the phase evolution of mechanically alloyed Ti–Ni powders is reported. Alloys were produced by low-energy and high-energy mechanical alloying (LEMA and HEMA, respectively). Powders milled for different times were characterised by X-ray diffraction and scanning electron microscopy. The phase transformations of powders milled by LEMA and HEMA before amorphisation are presented. During LEMA, TiNi, TiNi3, Ti3Ni4, and Ti2Ni were formed at 50 and 100 h. At these times, the results were consistent with the Ti–Ni equilibrium phase diagram. Up to 7.27 wt% of TiNi with a crystallite size of 32.63 ± 0.01 nm appeared at 50–75 h. During HEMA, iron contamination inhibited the formation of the TiNi phase at short milling times, and up to 47.9% of Fe0.2Ni4.8Ti5 was generated. These results indicate that amorphisation and heat treatment are not the only methods of promoting phase transformation in Ti–Ni alloys.
KW - Mechanical alloying
KW - Ti–Ni alloys
KW - microstructural analysis
KW - phase transformation
KW - powder metallurgy
KW - thermodynamic analysis
UR - http://www.scopus.com/inward/record.url?scp=85134028502&partnerID=8YFLogxK
U2 - 10.1080/00084433.2022.2099724
DO - 10.1080/00084433.2022.2099724
M3 - Artículo
AN - SCOPUS:85134028502
SN - 0008-4433
VL - 62
SP - 397
EP - 407
JO - Canadian Metallurgical Quarterly
JF - Canadian Metallurgical Quarterly
IS - 3
ER -