TY - JOUR
T1 - Phase Transformation Kinetics of High Nb-TiAl Alloy during Continuous Heating
AU - Li, Ying
AU - Zhou, Lian
AU - Lin, Junpin
AU - Chang, Hui
AU - Fan, Jianglei
AU - Cao, Yang
AU - Wang, Yan
AU - Wang, Yongbiao
AU - Liu, Jianxiu
N1 - Publisher Copyright:
© Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
PY - 2021/12/6
Y1 - 2021/12/6
N2 - In this work, the phase transformation behavior of Ti−45Al−8.5Nb−(W, B, Y) alloy during continuous heating was investigated using dilatometer and optical microscopy. Results indicated that the phase transformation process of high Nb-TiAl alloy during continuous heating included two stages: ordered α2 → disorder α and tetragonal γ → hexagonal α. According to the microstructure analysis, the initial α2/γ lamellar structure transformed into the massive γ phase and α phase (retained as α2) during the heating process. The activation energy of α2 → α and γ → α was 989.65 kJ/mol and 995.30 kJ/mol, respectively. Moreover, the lower the heating rate was, the faster the phase transformation reached the equilibrium state.
AB - In this work, the phase transformation behavior of Ti−45Al−8.5Nb−(W, B, Y) alloy during continuous heating was investigated using dilatometer and optical microscopy. Results indicated that the phase transformation process of high Nb-TiAl alloy during continuous heating included two stages: ordered α2 → disorder α and tetragonal γ → hexagonal α. According to the microstructure analysis, the initial α2/γ lamellar structure transformed into the massive γ phase and α phase (retained as α2) during the heating process. The activation energy of α2 → α and γ → α was 989.65 kJ/mol and 995.30 kJ/mol, respectively. Moreover, the lower the heating rate was, the faster the phase transformation reached the equilibrium state.
UR - http://www.scopus.com/inward/record.url?scp=85123377601&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2133/1/012029
DO - 10.1088/1742-6596/2133/1/012029
M3 - 会议文章
AN - SCOPUS:85123377601
SN - 1742-6588
VL - 2133
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012029
T2 - 2021 International Conference on Advanced Materials and Mechatronics, ICAMM 2021
Y2 - 30 October 2021 through 1 November 2021
ER -