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- W2005012912 abstract "In the present work, two post-processes, the 800 °C and 950 °C for 4 h annealing below β transus, were designed to improve the performance of selective laser melted (SLM) Ti–6Al–4V (Ti64) alloy. The results show that 800 °C annealing raises the ductility to 18%, while 950 °C annealing raises the ductility high up to 26%. Although the residual stress relief and martensite decomposition fully accomplished in both annealed samples, there is still a noticeable difference in ductility. The difference is due to that 950 °C annealing induce noticeable globularization which further alters the fracture mode. Further study indicates that with globularization of αGB phase (α phase along prior β grain boundary), the transgranular fracture replaces the detrimental intergranular fracture. Particularly, the high angle grain boundary (HAGB) between equiaxed αGB phase effectively inhibits the initiation and propagation of crack, when comparing to the low angle grain boundary (LAGB) in α lamella. The reason for globularization in 950 °C annealing could be concluded as the boundary splitting model. The β phase grow along the LAGB in α lamella and form thermal grooving. With the groove deepening, the lamella was separated into equiaxed α phase. In this process, high temperature annealing promotes sufficient bulk diffusion, which is a necessary condition for globularization of lamellar α phase in SLM Ti64 alloy." @default.
- W2005012912 created "2016-06-24" @default.
- W2005012912 creator A5023227228 @default.
- W2005012912 date "1963-01-01" @default.
- W2005012912 modified "2023-09-26" @default.
- W2005012912 title "Clustering kinetics in binary alloys" @default.
- W2005012912 cites W1963826072 @default.
- W2005012912 doi "https://doi.org/10.1016/0001-6160(63)90132-9" @default.
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