Performance of iridium containing nickel base superalloy tool for friction stir welding of Ti-6Al-4V alloy
- Nakazawa T. ,
- Tanaka K. ,
- Sakairi K. ,
- et al
- Nakazawa T. ,
- Tanaka K. ,
- Sakairi K. ,
- Sato Y.S. ,
- Kokawa H. ,
- Omori T. ,
- Ishida K. and
- Hirano S.
Links
Repository
Description
An investigation was undertaken into the development and wear performance of friction stir welding (FSW) tools made from precipitation strengthened Ir-containing nickel-based superalloys (Ni, 25%Ir, 14%W, 4%Al) during FSW of Ti, 6%Al, 4%V alloys. The superalloy specimens were subjected to solution heat treatment under vacuum (3h at 1300 deg.C) followed by heat treatment at 800 deg.C for gamma' phase precipitation. FSW trials were conducted at a travel speed of 15 mm/min, tool rotational speed of 120 rpm and tilt angle of 3 deg. Experiments were performed to examine the effect of water cooling on tool lifetime and wear behaviour. Interdiffusion between Ti-6Al-4V and the superalloy was studied by energy dispersive X-ray analysis. Tool geometry profile after welding was examined by optical image analysis.
11th International Symposium, 17-19 May 2016, Session 8A: High Temperature II, Paper 03
Related Records
