liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Fatigue Crack Initiation in Metallic Matrix
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology. Sandvik Materials Technology, Sandviken, Sweden.
2014 (English)In: TMS 2014 SUPPLEMENTAL PROCEEDINGS, John Wiley & Sons, 2014, 647-654 p.Conference paper (Refereed)
Abstract [en]

This paper will provide a study on the behaviors of fatigue crack initiation in metal matrix in five metallic materials using very high cycle fatigue testing and electron microscopy with electron backscatter diffraction and electron channeling contrast technique. The damage and crack initiation mechanisms in metal matrix have been focused. It shows that straining in these materials during the fatigue process was highly localized. This strain localization has led to the damage or fatigue crack initiation at grain boundaries or twin boundaries by impingement cracking. High strain localization causes dislocation accumulation during each cyclic straining and consequently the formation of local "fine grain zone" that increases the local damage by plasticity exhaustion. This can cause the formation of fatigue crack origin in the matrix. Strain localization and local plasticity exhaustion can be used to explain this phenomenon.

Place, publisher, year, edition, pages
John Wiley & Sons, 2014. 647-654 p.
Keyword [en]
very high cycle fatigue, local plasticity exhaustion, fatigue crack initiation, stainless steel
National Category
Engineering and Technology Materials Engineering
URN: urn:nbn:se:liu:diva-104534ISI: 000354941300078ISBN: 978-1-118-88985-5; 978-1-118-88972-5OAI: diva2:697373
143rd TMS Annual Meeting and Exhibition
Available from: 2014-02-18 Created: 2014-02-18 Last updated: 2015-06-22

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Chai, Guocai
By organisation
Engineering MaterialsThe Institute of Technology
Engineering and TechnologyMaterials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 156 hits
ReferencesLink to record
Permanent link

Direct link