6533b872fe1ef96bd12d3a2f

RESEARCH PRODUCT

Friction Stir Welding as an Effective Alternative Technique for Light Structural Alloys Mixed Joints

Sergio PellegrinoLivan FratiniGianluca BuffaFabrizio Micari

subject

Materials sciencebusiness.industryProcess (engineering)MetallurgyAutomotive industryIntermetallicTitanium alloychemistry.chemical_elementMagnesium aloysGeneral MedicineWeldingAluminum alloyslaw.inventionAluminum alloys Magnesium aloys Titanium alloys dissimilar JointBrittlenessdissimilar JointchemistrylawFriction stir weldingTitanium alloysbusinessEngineering(all)Titanium

description

Abstract The increasing use of structural light alloys in the aeronautical, automotive and transportation industry is pushing researchers to find new solutions for the production of innovative components. Mixed joints made out dissimilar alloys represent a challenge for engineers to the difficulties arising in welding materials characterized by significantly different mechanical, thermal and chemical properties. In the paper, an overview of the most used process to produce dissimilar joints of aluminum, magnesium and titanium is given. Both fusion based and solid state welding processes can be used. Although the joining of these materials is possible, particular attention must be taken to the choice of process parameters in order to avoid the formation of intermetallics, often resulting in brittle behavior and poor mechanical properties of the joints.

10.1016/j.proeng.2014.09.130http://dx.doi.org/10.1016/j.proeng.2014.09.130