Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 480, Issue 1-2, Pages 439-448Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.07.017
Keywords
residual stresses; neutron diffraction; x-ray diffraction (XRD); eutectoid steels; cold-drawing
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The mechanical properties and the durability of cold-drawn entectoid wires (especially in aggressive environments) are influenced by the residual stresses generated during the drawing process. Steelmakers have devised procedures (thermomechanical treatments after drawing) attempting to relieve them in order to improve wire performance. In this work neutron diffraction measurements have been used to ascertain the role of temperature and applied force-during post-drawing treatments-on the residual stresses of five rod batches with different treatments. The results show that conventional thermomechanical treatments are successful in relieving the residual stresses created by cold-drawing, although these procedures can be improved by changing the temperature or the stretching force. Knowledge of the residual stress profiles after these changes is a useful tool to improve the thermomechanical treatments instead of the empirical procedures used currently. (c) 2007 Elsevier B.V. All rights reserved.
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