Effect of Explosion on the Mechanical Properties of 110G13L Steel

Resumo

Shock loading is an effective method of bulk hardening of materials. This study of the structure and mechanical properties of 110G13L steel before and after explosion loading showed that the mechanical characteristics reached maximum values at the surface of the explosively treated material: Vickers hardness H_V =480, yield strength of 850 MPa, and tensile strength of 1240 MPa. The thickness of the hardened layer was ≈40 mm. For steel without shock loading, the above parameters had the following values: H_V =240, yield strength of 355 MPa, and tensile strength of 840 MPa. Metallographic studies revealed that the number of slip lines in grains decreased with distance from the explosive loading surface.