MASTER’S THESIS DEPARTMENT OF MECHANICAL ENGINEERING DIVISION OF MATERIALS ENGINEERING LUND UNIVERSITY JUNE 2011 Fatigue Properties of Tungsten Heavy Alloys IT180 and D176 AUTHORS: Marc Miralda López, Patricia Lorenzo Paez SUPERVISORS: Srinivasan Iyengar, Lund University Etam Noah, European Spallation Source (ESS),Lund EXAMINER: Solveig Melin, Lund University ISRN LUTFD2/TFMT --11/5031—SE