A NOVEL METHODOLOGY FOR THE PLACEMENT OF MULTI DIAMETER INTERLAYER OFC MATERIAL IN FRICTION WELDING OF DISSIMILAR MATERIALS.

摘要

Joining of dissimilar TÍ-6AL-4V with SS304L is proven to be difficult, because of formation of brittie inter metallic at the interface. The joint was not successful most of the times, when an attempt was made to join dissimilar metáis without interlayer. The present invention deals with placement of typically designed and fabricated OFC interlayer material in the form of bush inserted in to stainless steel material before the welding process begins. This invention proves that with new simple geometry of interlayer and placement of interlayer in the system will yield good and successful joint. The joint surfaces in the welded región had good diffusion between interlayer metal and base metáis with interlocking mechanism. The lower cost of the joint preparation with minimum loss in material is an added advantage to the methodology. This method of preparing the OFC interlayer and placement of typically designed interlayer in the friction welding process may be extended to other dissimilar joints where interlayer is required.