J. Phys. IV France 110 (2003) 863
Experimental study of A36 steel spall fractureA.K. Zurek1, J. Mata2, E. Cerreta1 and C.P. Trujillo1
1 Los Alamos National Laboratory, MST-8, MS: G755, Los Alamos, NM 87545, U.S.A.
2 Akademia Gomiczo-Hutnicza, Metallurgy and Materials Science Department, Mickiewicza 30, 30-059 Krakow, Poland
The preliminary results of A36 steel spall experiment are presented. Special attention is given to the heat treating conditions in the two-phase (ferrite and austenite) region and resulting microstructure after the spall loading condition. One of the fundamental principles of any thermomechanical processing in the twophase region is'the simultaneous superposition of microstructure evolution and mechanical behavior of particular phase. The degree of generated defects, cracks and phases, and phase transformation is decisive for the final microstructure and the fracture resistance. Preliminary resutts show the banded structure still exists after the spall test and, totally unexpected lack of the visible characteristic voids, cracks or shear instabilities due to the tensile loading at the mid plane of the sample.
© EDP Sciences 2003