Paper Title:
Retained Austenite and Residual Stress Evolution in Carbonitrided Shot-Peened Steel
  Abstract

Carbonitriding followed by shot peening is an important industrial process to improve the mechanical properties of components, especially by producing compressive residual stresses. In addition, a high hardness and strength produced by this process enhances the surface properties and leads also a high resistance to fatigue. In this study, shot peening with different parameters have been employed to treat the carbonitrided specimens. The measurements of residual stress and residual austenite were performed by X-ray diffraction. It is shown, with a simple eigenstrain model, that residual austenite transformation under shot impact contributes to a significant fraction of residual stresses. When the material (750 HV) is peened with 800 HV shot, it represents about 50%, the remaining is due to plasticity. When it is peened with 640HV shot, 100% of residual stresses can be explained by austenite transformation.

  Info
Periodical
Edited by
Paolo Scardi and Cristy L. Azanza Ricardo
Pages
374-380
DOI
10.4028/www.scientific.net/MSF.681.374
Citation
S. Van Wijk, M. François, E. Sura, M. Frabolot, "Retained Austenite and Residual Stress Evolution in Carbonitrided Shot-Peened Steel", Materials Science Forum, Vol. 681, pp. 374-380, 2011
Online since
March 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: M.S. Koo, Ping Guang Xu, J.H. Li, Yo Tomota, O. Muransky, Petr Lukáš, Yoshitaka Adachi
Abstract:A challenge was made to examine the micro-structural evolution during thermomechanically controlled processing (TMCP) by in situ neutron...
419
Authors: Derek O. Northwood, Lily He, Erin Boyle, Randy J. Bowers
Abstract:SAE 8620 steel is typically used in the carburized condition for powertrain applications in the automotive industry, e.g. gears, roller...
4464
Authors: Christoph Heinze, Arne Kromm, Christopher Schwenk, Thomas Kannengiesser, Michael Rethmeier
Abstract:The development of high-strength structural steels with yield strengths up to 1000 MPa results in the requirement of suitable filler...
85
Authors: Regita Bendikiene, Rasa Vitkeviciene
Chapter 3: Materials Characterization
Abstract:The paper presents the results of longitudinal investigations of transformation plasticity, kinetic plasticity, elastic-plastic strain and...
131
Authors: Li Hui Wang, Di Tang, Hai Tao Jiang, Ji Bin Liu, Yu Chen
Chapter 3: Steel and Iron Technology
Abstract:Effects of continuous annealing process on microstructure and properties of Si based cold-rolled TRIP Steel were studied. The results show...
472