@article{oai:kitami-it.repo.nii.ac.jp:00006889,
 author = {Fuji, Akiyoshi and Ikeuchi, Kenji and Kimura, Masaaki and Satoh, Yutaka S. and Kokawa, Hiroyuki},
 journal = {7th International Welding Symposium},
 month = {Nov},
 note = {The growth of intermediate layer (layer) of pure Ti and pure Al friction-welded joint heated at 853K for up to 173ks (580℃-48H) was clarified by in-situ (direct) and continuously observation method with a high temperature optical microscope. The followings are concluded. The layer grew from Al substrate to Ti one, and neither linear nor parabolic time-dependence could be applied to the rate of layer growth. The layer growth stopped for a while (for several hours) after heating of approximately every 36ks (10H). That is, several plateaus appeared during heat treatment. It can be though that nucleation and growth of nuclei of Al-Ti binary intermetallic phase are necessary for layer growth. The rate of layer growth of pure Ti and highly pure Al joint was faster than that of pure Ti and commercially pure Al joint. This is due to silicone content in Al base metal. There was slight difference of the rate of layer growth as for the locations along the radius of the joint and as for friction time., application/pdf},
 pages = {663--668},
 title = {In-situ Observation of Interlayer Growth during Post-weld Heat Treatment in Friction-welded Joint of Titanium and Aluminum},
 volume = {1},
 year = {2001}
}