Measurement of residual stress in quenched 1045 steel by the nanoindentation method
نویسندگان
چکیده
Article history: Received 12 September 2010 Accepted 27 September 2010 In this paper, the residual stress in quenched AISI 1045 steel was measured by a recently developed nanoindentation technique. Depth control mode was adopted to measure the residual stress. It was found that residual compressive stress was generated in the quenched steel. The material around nanoindents exhibits significant pile-up deformation. A new method was proposed to determine the real contact area for pile-up material on the basis of invariant pile-upmorphology of the loaded or unloaded states. The results obtained by the new method were in good agreement with the residual stresses measured by the classical X-ray diffraction (XRD) method. © 2010 Elsevier Inc. All rights reserved.
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