Improvement of Fatigue Behaviour of High Strength Aluminium Alloys by Fluidized Bed Peening (FBP)

In many assemblies of moving components, contact problems under various lubrication conditions are lifetime-limiting. There, relative motion of contacting bodies, combined with high loads transmitted via the contact surface lead to fretting fatigue failure. For a reliable prediction of in service performance load type, different damage and failure mechanisms that may be activated during operation have to be known. In this contribution selected results of a currently conducted research project are presented. The aim of this study was to examine the material behaviour of a surface stressed steel. The influence of the fretting regime on fatigue properties has been investigated.

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Effect of frequency and biofuel E85 on very high cycle fatigue behaviour of the high strength steel X90CrMoV18

International Journal of Fatigue ◽

10.1016/j.ijfatigue.2013.06.005 ◽

2014 ◽

Vol 60 ◽

pp. 90-100 ◽

Cited By ~ 11

Author(s):

S. Schmid ◽

M. Hahn ◽

S. Issler ◽

M. Bacher-Hoechst ◽

Y. Furuya ◽

...

Keyword(s):

High Strength Steel ◽

High Cycle Fatigue ◽

High Strength ◽

Fatigue Behaviour ◽

Cycle Fatigue ◽

Very High Cycle Fatigue ◽

Very High

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Low-cycle fatigue behaviour of laser welded high-strength steel DOMEX 700 MC

MATEC Web of Conferences ◽

10.1051/matecconf/201815705013 ◽

2018 ◽

Vol 157 ◽

pp. 05013 ◽

Cited By ~ 2

Author(s):

Peter Kopas ◽

Milan Sága ◽

František Nový ◽

Bohuš Leitner

Keyword(s):

Fatigue Life ◽

Welded Joints ◽

High Strength Steel ◽

Fatigue Testing ◽

Low Cycle Fatigue ◽

High Strength ◽

Fatigue Behaviour ◽

Total Strain Amplitude ◽

Cycle Fatigue ◽

Fatigue Life Analysis

The article presents the results of research on low cycle fatigue strength of laser welded joints vs. non-welded material of high-strength steel DOMEX 700 MC. The tests were performed under load controlled using the total strain amplitude ɛac. The operating principle of the special electro-mechanic fatigue testing equipment with a suitable clamping system was working on 35 Hz frequency. Fatigue life analysis was conducted based on the Manson-Coffin-Basquin equation, which made it possible to determine fatigue parameters. Studies have shown differences in the fatigue life of original specimens and laser welded joints analysed, where laser welded joints showed lower fatigue resistance. In this article a numerical analysis of stresses generated in bending fatigue specimens has been performed employing the commercially available FEM-program ADINA.

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Short Crack Propagation Model Applied to Shot Peened Aluminium Alloys

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.65.53 ◽

2009 ◽

Vol 65 ◽

pp. 53-61 ◽

Cited By ~ 2

Author(s):

J. Solis ◽

J. Oseguera-Peña ◽

I. Betancourt

Keyword(s):

Surface Roughness ◽

Residual Stresses ◽

Crack Propagation ◽

Aluminium Alloys ◽

Micromechanical Model ◽

High Strength ◽

Crack Arrest ◽

Propagation Model ◽

Safe Load ◽

Compressive Residual Stresses

The Navarro-Rios micromechanical model was used to assess the bounds of two different damage zones: crack arrest region and crack propagation region of controlled shot peening (CSP) of high strength aluminium alloys. Performance of CSP in terms of fatigue resistance was investigated. This comparison indicated that CSP in terms of fatigue depends on the competition between its beneficial and detrimental products, i.e. surface roughness and compressive residual stresses respectively. The gathered information can be used for safe load determinations in design.

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