Cool Stars 14 - Submitted Abstract # 116 This version created on 05 October 2006 A VLT/FLAMES survey of Galactic open clusters Sofia Randich, INAF/Osservatorio di Arcetri Paola Sestito, INAF/Osservatorio di Arcetri and Osservatorio di Palermo Roberto Pallavicini, INAF/Osservatorio di Palermo Angela Bragaglia, INAF/Osservatorio di Bologna Livio Pastori, INAF/Osservatorio di Brera Loredana Prisinzano, INAF/Osservatorio di Palermo Paolo Spano', INAF/Osservatorio di Brera Sandro Villanova, Universita' di Padova Monica Tosi, INAF/Osservatorio di Bologna Giovanni Carraro, Universita' di Padova Eugenio Carretta, INAF/Osservatorio di Bologna Giancarlo Pace, INAF/Osservatorio di Arcetri Luca Pasquini, European Southern Observatory Francesca Primas, European Southern Observatory Gianpiero Tagliaferri, INAF/Osservatorio di Brera Simone Zaggia, INAF/Osservatorio di Padova We carried out a big VLT/FLAMES programme aimed at a detailed study of 13 Galactic open clusters spanning a large interval of ages (from 250 Myr to 7 Gyr) and Galactocentric distances (from 7 to 22 kpc). The main goals of the project are: a) the determination of Fe, alpha, and Fe-peak element abundances of evolved cluster members in order to put constraints on models of formation and evolution of the Galactic disk; and b)measurements of lithium abundances of unevolved cluster stars, which provide a key tool to investigate mixing processes at work in stellar interiors and their dependence on stellar mass and metallicity. We will present an overview of the project and discuss our main results together with their implications. ----------------------------------