| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Light Metal Technology
|
| Presentation Title |
Role of Interfaces on the Orientation Dependent Spheroidization Response of á-colonies in Ti-6Al-4V Alloy |
| Author(s) |
Shibayan Roy, Antony D. Rollett |
| On-Site Speaker (Planned) |
Shibayan Roy |
| Abstract Scope |
Spheroidization response of constituent α-colonies in a two-phase Ti-6Al-4V alloy is known to differ significantly in secondary thermomechanical processing depending on their orientation with respect to primary straining direction/s. The orientation in first place dictates the nature of slip activation (single versus multiple slip, basal or prism <a> slip plus pyramidal <c+a> slip etc.) which then translates into the relative ease of boundary splitting and thermal grooving in short-term and decides the order of spheroidization for diffusion based coarsening processes in long-term processing. Enough discrepancy and exceptions although persists in this orientation dependent shproidization response concept till date. The present study checks the role of anisotropy in α/β interfacial energy as a function of α-colony orientation on the spherodization process of α lamellae during prior deformation. The initial experimental results shed further orientation dependency in the spheroidization sequence due to the loss of interfacial coherency in a selective manner. |