TY - JOUR
T1 - Hot workability of burn resistant Ti-35V-15Cr-0.3Si-0.1C alloy
AU - Zhang, S.
AU - Zeng, W.
AU - Zhou, D.
AU - Lai, Y.
N1 - Publisher Copyright:
© 2016 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.
PY - 2016
Y1 - 2016
N2 - In this study, hot workability of Ti-35V-15Cr-0.3Si-0.1C alloy is investigated in the temperature range of 900-1150°C and strain rate range of 0.01-10 s-1 using processing maps. In the maps, the stability domain displays the feature of dynamic recrystallisation and dynamic recovery. The fraction of recrystallisation in this alloy is much larger than that in other β-Ti alloys, which can be attributed to the effect of titanium carbides by a 'particle stimulated nucleation' mechanism. Higher temperature and lower strain rate are helpful for breaking down the carbides and improving the workability. However, deforming >1100°C would result in grain coarsening. In instability domain, the occurrence of flow localisation, shear bands and cracking is discussed. The optimised processing window is in 1050-1100°C/0.01-0.1 s-1.
AB - In this study, hot workability of Ti-35V-15Cr-0.3Si-0.1C alloy is investigated in the temperature range of 900-1150°C and strain rate range of 0.01-10 s-1 using processing maps. In the maps, the stability domain displays the feature of dynamic recrystallisation and dynamic recovery. The fraction of recrystallisation in this alloy is much larger than that in other β-Ti alloys, which can be attributed to the effect of titanium carbides by a 'particle stimulated nucleation' mechanism. Higher temperature and lower strain rate are helpful for breaking down the carbides and improving the workability. However, deforming >1100°C would result in grain coarsening. In instability domain, the occurrence of flow localisation, shear bands and cracking is discussed. The optimised processing window is in 1050-1100°C/0.01-0.1 s-1.
KW - Burn resistant titanium alloy
KW - Hot workability
KW - Processing map
KW - Ti-35V-15Cr-0.3Si-0.1C
UR - http://www.scopus.com/inward/record.url?scp=84964588276&partnerID=8YFLogxK
U2 - 10.1179/1743284715Y.0000000114
DO - 10.1179/1743284715Y.0000000114
M3 - 文章
AN - SCOPUS:84964588276
SN - 0267-0836
VL - 32
SP - 480
EP - 487
JO - Materials Science and Technology
JF - Materials Science and Technology
IS - 5
ER -