Paper Title:
Fatigue Crack Growth Acceleration Due to Hydrogen in Type 304 Stainless Steel
  Abstract

In order to investigate the influence of hydrogen on the fatigue strength of Type 304 meta-stable austenitic stainless steel, specimens were cathodically charged with hydrogen. Hydrogen-charging led to a marked decrease in fatigue crack growth life. Crack growth paths and slip bands morphology were changed by the hydrogen-charging. To elucidate the mechanism of the degradation by hydrogen, the surfaces of both the uncharged and charged specimens were examined by the hydrogen microprint technique (HMT). In the uncharged specimen, no hydrogen emission from specimen surface was observed. On the other hand, in the hydrogen-charged specimen, a hydrogen emission was observed, especially in the vicinity of fatigue cracks. Hydrogen was mainly emitted from slip bands. These results suggest that the degradation of fatigue crack growth resistance in hydrogen-charged specimens was caused by the diffusion of hydrogen to slip bands, which accelerated the dislocation mobility and thereby facilitated the fatigue crack growth.

  Info
Periodical
Key Engineering Materials (Volumes 345-346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Pages
319-322
DOI
10.4028/www.scientific.net/KEM.345-346.319
Citation
H. Noda, H. Matsunaga, "Fatigue Crack Growth Acceleration Due to Hydrogen in Type 304 Stainless Steel", Key Engineering Materials, Vols. 345-346, pp. 319-322, 2007
Online since
August 2007
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: Tomáš Denk, Vladislav Oliva, Aleš Materna
Abstract:A two-parameter constraint-based fracture mechanics approach is used to explain the effect of the constraint on the apparently anomalous...
307
Authors: Byung Bok Choi, Dong Ho Bae
Abstract:Austenitic stainless steel is a useful material for various industrial facilities such as the nuclear and steam power plant and the heavy...
9
Authors: Young Pyo Kim, Cheol Man Kim, Woo Sik Kim, Kwang Seon Shin
Abstract:A clear understanding of fatigue properties for the pipeline steel and its weld is important to provide information for pipeline design...
303
Authors: Shabnam Hosseini, Mohammad Bagher Limooei
Chapter 1: Metal Materials
Abstract:In this research, fatigue behaviour of Ti-6Al-4V alloy was investigated for smooth and notched specimens with stress concentration...
7
Authors: Yan Zeng Wu, Qing Yuan Wang, Qiao Lin Ouyang
Chapter 7: Building Materials
Abstract:Using the ultrasonic fatigue test method, the influence of subjection to plasma nitriding surface modifications on the ultra-high cycle...
1731