Effect of Explosion on the Mechanical Properties of 110G13L Steel
A. V. Gus'kov, K. M. Zubashevskii, K. E. Milevskii, V. V. Samoilenko
Novosibirsk State Technical University, Novosibirsk, 630073 Russia
Keywords: сталь Гадфильда, ударно-волновое нагружение, твердость, прочность, линии скольжения, Hadfield steel, shock-wave loading, hardness, strength, slip lines
Abstract
Shock-wave loading is an effective method of volumetric hardening of materials. This study of the structure and mechanical properties of 110G13L steel before and after explosive loading has shown that the mechanical characteristics reach maximum values at the surface of the explosively treated material: a hardness of 480 HV, a yield strength of 850 MPa, and a tensile strength of 1240 MPa. The thickness of the hardened layer is »40 mm. For steel without shock-wave loading, the listed parameters had values of 240 HV, 355 MPa, and 840 MPa, respectively. Metallographic studies revealed that the number of slip lines in grains decreases with distance from the explosive loading surface.
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