Friction stir spot welding (FSSW) of dissimilar S45C steel and 6061-T6 aluminum alloy in a butt configuration is experimentally investigated. Butt spot welding is performed using a convex scrolled shoulder tool at different tool rotational speeds. FSSW butt joints are successfully fabricated by offsetting the tool to the steel side. https://qbtvmvioua3g4u.dsiblogger.com/67920753/genome-wide-crispr-cas9-screens-expose-genetic-vulnerabilities-and-mechanisms-of-temozolomide-sensitivity-in-glioblastoma-stem-cells