Tensile Mechanical Properties and Hardness Test of Pre-torsion Test on Axle Material EA4T
Abstract
In this paper, the pre torsion test of EA4T axle steel was carried out, and the mechanical properties of the sample before and after the experiment were compared. After torsion, the yield strength of the sample can be improved greatly, and the tensile strength of the specimen is only within a small range. At the same time, the plasticity of the material decreases with the increase of the yield strength. Through the test of the hardness of the sample, it is known that the hardness of the core sample is lower than that of the peripheral samples. For the core and peripheral samples, the strength of the sample can be improved by twisting, and the hardness is increased with the increase of the torsion angle. The hardness and strength of materials is the corresponding relationship, so the increase in hardness and strength is consistent.
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