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Microhardness Residual Stress Study

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Microhardness Residual Stress Study: Effect of Stress Relieving Temperature on Tensile Strength, Residual Stress, and Microhardness  Author: Daniel R. Sebastian for the Spring Manufacturers Institute

This study details the effects of stress relieving on mechanical springs made from four wire sizes and three different indexes of Cr-Si ASTM 401. Measurements were made using x-ray diffraction and microhardness. The preponderance of data clearly establishes a direct relationship between microhardness and residual stress. The use of microhardness provides an alternate method to document the effects of stress relieving.

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