Equal-channel angular pressing influencing the mean stress sensitivity in the high cycle fatigue regime of the 6082 aluminum alloy

Winter, Lisa; Hockauf, Kristin; Winter, Sven; Lampke, Thomas

doi:10.1016/j.msea.2020.140014

Cited by 15 publications

(5 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At high rate of total strain amplitude (0.4 %), no dimplelike fracture or any stabilised crack propagation is observed. A brittle-like feature could be detected in the fracture area and similar fatigue fracture pattern has been reported in a case where 6082 aluminum alloy was subjected to a high degree of total strain amplitude [57]. The micro voids concentration in the final fracture zone, which has originated from the second phase particles, Figure 21b.…”

Section: Fractography Of the Compositessupporting

confidence: 80%

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

Chockalingam

Raman²,

Olubambi

2023

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Aluminium‐2magnesium alloy castings find its application in engineering sectors where fatigue property is a key requirement. Few researches have been carried out in the past to improve its fatigue property by micro, nano reinforcements. However, the requirement of intended application has not yet attained and hence this current research study has been taken up to provide a solution. This research work focuses through a novel approach for synthesizing in‐situ magnesium aluminate particles in aluminium‐2magnesium alloy by the addition of manganese dioxide and copper oxide precursor addition (1 wt.%, 1.5 wt.% and 2 wt.%) during the casting process. Microstructure of fabricated composites were examined through field emission scanning electron microscopy to characterize the morphology and distribution of magnesium aluminate particles. The fabricated aluminium‐2magnesium/magnesium aluminate in‐situ composite specimens were subjected to low cycle fatigue testing at two different strain amplitudes of 0.3 % and 0.4 % and a frequency of 0.3 Hz. Among all composite specimens, specimens reinforced with 2 wt.% manganese dioxide and 2 wt.% copper oxide outperformed when tested in strain amplitudes of 0.3 % and 0.4 % respectively. Fractography studies were performed on failed composite specimens to study the modes of failure that resulted after fatigue testing.

show abstract

Section: Fractography Of the Compositessupporting

confidence: 80%

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

Chockalingam

Raman²,

Olubambi

2023

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…The mechanical properties of the used alloy in this heat-treatment condition are given in Table 2, and the determination of the properties using tensile tests is described in [25]. After heat-treatment, axial specimens with a minimum diameter of 4.0 mm were machined using precision turning (geometry shown in [32]). The surface roughness of the machined fatigue specimens was 0.88 µm R a maximum.…”

Section: Methodsmentioning

confidence: 99%

Influence of Hydrothermal Sealing on the High Cycle Fatigue Behavior of the Anodized 6082 Aluminum Alloy

Winter

Lampke

2022

Coatings

Self Cite

View full text Add to dashboard Cite

For aluminum alloys, anodizing is a common electrochemical surface treatment to allow for protection against corrosion and wear. The produced conversion layers are first sealed in industrial processes to further enhance the corrosion protection by closing the coating surface pores. In their lifetime, anodized components often undergo cyclic loadings. However, despite the relevance of a sealing treatment, there is a lack of systematic studies regarding its influence on the fatigue behavior of anodized aluminum components. In this work, a 6082-aluminum alloy was anodized in sulphuric acid and the effect of the anodizing treatment with and without further hydrothermal sealing on the fatigue strength was investigated. The thickness and Martens hardness of the coatings were determined and the coating appearance in non-sealed and sealed conditions was analyzed by scanning electron microscopy prior to and after cyclically loading at R = −1. The fatigue strength was significantly decreased by the anodizing treatment, when compared to the bare substrate. However, hydrothermal sealing had a positive influence as the anodized and sealed condition attained a fatigue strength in the range of the bare aluminum. Distinct differences regarding the coating appearances, thickness, and hardness were not observed when comparing the non-sealed and the sealed conditions. After fatigue loading, numerous pronounced radial cracks were present in the anodic coating, but the number of cracks were significantly lower for the hydrothermally sealed coating. Fatigue failure occurred due to propagation of one crack from the coating towards the substrate, resulting in single-point crack initiation, which was similar to the fatigue fracture behavior of the bare aluminum substrate.

show abstract

“…As a result, FSP has been utilized as a basic technique for manipulating fine‐grain microstructures. [ 23 ] Recently, fine grain microstructure has been observed using severe plastic deformation (SPD) methods, like equal channel angular pressing, [ 24 ] high‐pressure torsion, [ 25 ] accumulative roll bonding, [ 26 ] and multi‐axial forging. [ 27 ] The highlighted procedure is the processed aluminum plate incorporating the SiC particles, filled in the hole of the dimension of 3 mm/5 mm as a diameter/depth, respectively.…”

Section: Friction Stir Processingmentioning

confidence: 99%

A Review on Aluminum Matrix Composites Synthesized by FSP

Das

Raja²,

Nautiyal³

et al. 2023

Macromolecular Symposia

View full text Add to dashboard Cite

Surface modification has been emerged out as a novel value addition process to increase the mechanical as well as tribological execution of the engineering materials in the previous decade. Friction stir processing (FSP) has been one of the best and most recent technologies for improving the surface properties of work material. The current study explores a critical review of the fabrication of aluminum matrix composite by incorporating the abrasive type particles through FSP and analyzing the improved mechanical, thermal, and tribological characteristics of the fabricated composite materials. The study will pave the way for opportunities related to surface modification by FSP.

show abstract

Equal-channel angular pressing influencing the mean stress sensitivity in the high cycle fatigue regime of the 6082 aluminum alloy

Cited by 15 publications

References 57 publications

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

Influence of Hydrothermal Sealing on the High Cycle Fatigue Behavior of the Anodized 6082 Aluminum Alloy

A Review on Aluminum Matrix Composites Synthesized by FSP

Contact Info

Product

Resources

About