FATIGUE BEHAVIOR OF PEARLITIC S.G. CAST IRONS AFTER LASER SURFACE HEAT TREATMENTS Y. GUAN, D. PANTELIS, D. CHAMBOLLE, S. PARENT-SIMONIN and Ph. POUPEAU J. Phys. IV France, 01 C7 (1991) C7-81-C7-86 DOI: 10.1051/jp4:1991718