The surface integrity of a die steel after electrodischarge machining: 2 residual stress distribution

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Abstract

The residual stresses produced in the surface layers of KEA145 (AISI H13) tool steel specimens during electrodischarge machining have been measured by the bending-deflection method. Stress-depth profiles were obtained through progressive removal of material by electropolishing. High residual tensile stresses were found in all specimens, decreasing from a maximum - at the surface for the finishing generator and 20 μm below the surface for the roughing generator - to zero at a depth of about 200 μm. The magnitude of the residual stress increased with pulse energy. © 1991 The Institute of Metals and the Wolfson Institute for Surface Engineering.

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Merdan, M. A., & Arnell, R. D. (1991). The surface integrity of a die steel after electrodischarge machining: 2 residual stress distribution. Surface Engineering, 7(2), 154–158. https://doi.org/10.1179/sur.1991.7.2.154

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