Paper Title:
Fatigue Strength Degradation by Irreversible Hydrogen in Cold Drawn Eutectoid Steels
  Abstract

The fatigue tests were conducted for cold-drawn eutectoid steels having different activation energies and microstructures to investigate the mechanism of fatigue strength degradation by irreversible hydrogen. The fatigue strength of a sample with low activation energy was decreased by irreversible hydrogen, whereas the fatigue strength of a sample with high activation energy was not. When the activation energy for irreversible hydrogen becomes small, the desorption of irreversible hydrogen from its trap site is easily induced by cyclic loading, which results in a decrease in fatigue strength. When a sample having high activation energy was annealed at 473 K, the fatigue strength was decreased by irreversible hydrogen although the activation energy barely changed. This is because the precipitation of fine carbides due to annealing causes higher sensitivity to hydrogen embrittlement. High sensitivity to hydrogen embrittlement was concluded to induce the fatigue strength degradation by irreversible hydrogen. Therefore, the degradation of fatigue strength by irreversible hydrogen depends on the activation energy and sensitivity to hydrogen embrittlement.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
188-193
DOI
10.4028/www.scientific.net/KEM.462-463.188
Citation
M. Nakatani, K. Minoshima, "Fatigue Strength Degradation by Irreversible Hydrogen in Cold Drawn Eutectoid Steels", Key Engineering Materials, Vols. 462-463, pp. 188-193, 2011
Online since
January 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: S.F. Medina, M.I. Vega, Manuel Gómez
Abstract:This work has studied the influence of different Ti and N compositions on hot deformation strength by determining the peak stress of flow...
1205
Authors: J.B. Wen, F.X. Chen, Ke Ke Zhang, Yong Shun Yang
Abstract:By means of superplastic tensile test above the Ac1 temperature (γ→α transformation temperature), superplastic deformation activation energy...
341
Authors: Ui Gu Gang, Dae Bum Park, Won Jong Nam
Abstract:The microstructural evolution during thermal annealing of a cryogenic rolled 5052 Al alloy was investigated. The activation energy for...
735
Authors: Wei Quan Shao, Shaou Chen, Da Li, Ping Qi, Yong Wan, Yong Cheng Zhang
Abstract:The sintering activation energy of high-purity alumina powders with different particle sizes was evaluated under non-isothermal condition....
686
Authors: Dipti Samantaray, Sumantra Mandal, S.K. Albert, A.K. Bhaduri, Tammana Jayakumar
Chapter 7: Materials Characterisation
Abstract:In this paper, the deformation behaviour of a high-nitrogen grade 316LN stainless steel (with 0.14%N) has been studied over a wide range of...
477