Prediction of Material Flow Behavior in Stir Zones of Friction Stir Welded 6％Ni Carbon Steel Based on Texture Analysis

Friction stir welding (FSW) was performed under the two conditions (rotation speed-traveling speed) of 150 rpm-100 mm/min and 200 rpm-400 using 6 mass％Ni-0.63 mass％C steels. The slightly lower peak temperature significantly higher cooling rate obtained condition mm/min. Texture analysis for retained austenite martensite revealed that parent had simple shear texture, which lead to formation {110}<111> texture in transformed martensite. Moreover, material flow behavior as a function distance from top surface zone analyzed based on textures by EBSD measurement. A concentric flow, has smaller radius far tool shoulder, formed On other hand, heterogeneous with center shifted retreating side In addition, different vertical component predicted occur each conditions.