26
Dec
Ti 6al 4v Microstructure. The focus of this work has been microstructure characterisation of Ti-6Al-4V manufactured by five different additive manufacturing AM processes. This alloy contains a mixture of alpha and beta phases with the beta phase accounting for 10-50 at room temperature. The initial structure of the alloy is shown in figure 1. The phase volume fraction of total D E.
The SLM technology using Ti-6Al-4V alloy have a martensitic microstructure with low ductility and high hardness 4. The phase volume fraction of total D E. Evolution equations for these parameters were implemented for thermal finite element analysis of the process. 2b were deposited to characterize the interfacial feature and microstructure of the SLM-produced Ti-5Al-25SnTi-6Al-4V dissimilar alloy. The solidification map for Ti-6Al-4V is seen in Figure 2. To improve mechanical properties heat treatment is usually carried out.
In this study the macrostructure microstructure and mechanical properties of a Ti-6Al-4V alloy after WAAM deposition have been investigated.
The microstructure and mechanical behavior of simple product geometries produced by layered manufacturing using the electron beam melting EBM process and the selective laser melting SLM process are compared with those characteristic of conventional wrought and cast products of Ti6Al4V. The alloy Ti-6Al-4V is a difficult alloy to work due to the fact that its formability is poor even in the annealed condition making it challenging to forge. Cao S Chen Z Lim CVS Yang K Jia Q Jarvis T et al. Ti alloys are very sensitive to the thermal history and shaped metal deposition introduces for each welding. To improve the deposits microstructure the effect of high-pressure interpass rolling was evaluated and a flat and a profiled roller were compared. The slight difference in the horizontal section size between the Ti-5Al-25Sn and the Ti-6Al-4V layers was designed to facilitate the identification of the deposition interface.