Paper Title:
On the Cyclic Stability and Fatigue Performance of Ultrafine-Grained Interstitial-Free Steel under Mean Stress
  Abstract

This paper reports on the fatigue performance of an ultrafine-grained (UFG) interstitialfree (IF) steel deformed at various mean stress levels. The UFG microstructure was achieved using equal channel angular extrusion processing at room temperature (RT) and along an “efficient” route, giving way to the formation of high angle grain boundaries (HAGBs) with a high volume fraction. The current study not only confirms the previous finding that a high volume fraction of HAGBs promotes cyclic stability, but also inquires into the role of mean stress level on the cyclic stability. It is shown that the UFG IF steel exhibits a stable cyclic deformation response in the lowcycle fatigue regime within the medium applied mean stress range of -75 to 75 MPa. The corresponding fatigue lives can still be predicted with the Smith-Watson-Topper approach within this range. Furthermore, the present study demonstrates that the evolution of mean strains with cyclic deformation can be linked to the evolution of mean stresses in strain-controlled loading.

  Info
Periodical
Key Engineering Materials (Volumes 378-379)
Edited by
Dr. T. S. Srivatsan, FASM, FASME
Pages
39-52
DOI
10.4028/www.scientific.net/KEM.378-379.39
Citation
T. Niendorf, H. J. Maier, D. Canadinc, I. Karaman, "On the Cyclic Stability and Fatigue Performance of Ultrafine-Grained Interstitial-Free Steel under Mean Stress", Key Engineering Materials, Vols. 378-379, pp. 39-52, 2008
Online since
March 2008
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: Alexei Vinogradov
Abstract:The available to date experimental results are reviewed with regard to the common aspects and features of monotonic and cyclic stress-strain...
267
Authors: Lilia R. Saitova, Heinz Werner Höppel, Matthias Göken, A.R. Kilmametov, Irina P. Semenova, Ruslan Valiev
Abstract:Ti-6Al-4V ELI (extra low interstitials) was processed by equal channel angular pressing in order to obtain an ultrafine-grained (UFG)...
827
Authors: Jaroslav Polák, Martin Petrenec
Abstract:The fatigue properties of ferritic-pearlitic-bainitic steel using specimens produced from massive forging were measured in stress controlled...
577
Authors: Qing Juan Wang, Zhong Ze Du, Xiao Yan Liu, Ludvík Kunz
Abstract:The fatigue life, cyclic deformation behavior and microstructure of ultra-fine grained (UFG) copper produced by equal-channel angular...
231
Authors: Hong Fu Xiang, Jing Hai Tao, Ji Heng Wang, Hui Li, An Lun Dai
Chapter 2: Engineering Materials Research
Abstract:A beta phase containing titanium aluminum compound was prepared. Isothermal Fatigue(IF) were subjected at 650 °C at three strain rates, such...
314