Fatigue properties of Keronite® coatings on a magnesium alloy

Yerokhin, Aleksey; Shatrov, A.; Самсонов, В. И.; Shashkov, P.; Leyland, A.; Matthews, A.

doi:10.1016/s0257-8972(03)00877-6

Cited by 175 publications

(97 citation statements)

References 8 publications

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“…The micro-discharges, in fact, cause local melting of the surface, inducing pores and microcracks, as well as tensile stresses, during the subsequent rapid solidification [24]. Similar results were also found by Yerokhin et al [21] who reported a fatigue strength reduction in the range of 3-10% on PEO-treated magnesium alloy rods (Mg-Al 2-Zn 1-Mn 0.2) with respect to the bare material, while A. Nemcova et al [23] showed a 40-50% reduction in fatigue strength of PEO treated wrought AZ61 Mg alloys with respect to the untreated alloy.…”

Section: Fatigue Testssupporting

confidence: 84%

“…However, when components have to be used in humid or corrosive environments and/or improved wear resistance is needed, also Mg-RE alloys can be inadequate and protective surface treatments, such as conversion coating or electroplating/electroless plating are necessary [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…To date, however, few data on the fatigue behaviour of RE-containing cast Mg alloys are available [6,12,[27][28][29] and also the effect of anodisation or PEO has been mainly investigated on traditional wrought Mg-alloys without RE addition [21][22][23]30].…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

Ceschini¹,

Morri²,

Angelini³

et al. 2017

Preprint

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Rare earth rich magnesium alloys are used in aerospace and automotive fields because of their high specific strength and good castability. However, due to their low corrosion resistance, protective surface treatments, such as conversion coating or electroless plating are necessary, when they have to be used in humid or corrosive environments. The present study was aimed to evaluate the effect of Plasma Electrolytic Oxidation (PEO) and different surface roughness on the rotating bending fatigue of an innovative Mg alloy, with a high content of Nd (up to 3.1 wt%) and Gd (up to 1.7 wt %). Fatigue tests revealed a 15% decrease in the fatigue strength of the PEO treated alloy with respect to the bare alloy, probably due to the residual tensile stresses induced by the treatment. The effect of surface roughness on the bare alloy was, instead, negligible. The mechanisms of crack initiation were similar in the untreated and PEO treated alloy, with crack nucleation sites located in correspondence of large facets of the cleavage planes.

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Section: Fatigue Testssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

Ceschini¹,

Morri²,

Angelini³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…Reducing the weight of vehicles will decrease the fuel consumption which will also lower the emission of greenhouse gases such as CO 2 [1][2][3][4][5]. As a result of their dissolubility in chloride containing aqueous solutions, magnesium is a potential biodegradable implant material and unlike the titanium based implant materials, biodegradable magnesium alloys do not require a second surgical operation for the removal process and are mechanically more compatible with natural bone by virtue of their similar elastic modulus values (Mg alloys: 40-45 GPa, bone: 10-40 GPa) [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently releasing of magnesium ions during the dissolution process is beneficial for the healing process of bones [8]. However poor corrosion and wear resistance of magnesium and its alloys limit their application areas [3][4][5][9][10][11]. Therefore to improve the properties of magnesium addition of alloying elements is highly required [12,13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Ternary Mg-Sn-Mn Alloys

et al. 2016

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Ternary Mg-2Sn-Mn (0.5, 1, 2, and 2.5 wt% Mn) alloys were prepared under vacuum/argon atmosphere controlled furnace to investigate their microstructural and mechanical properties as a potential biodegradable implant material. As-cast alloys were heat treated at 550• C for 24 h and then at 300• C for 16 h. The alloys were characterized as-cast and after the heat treatment by optical microscopy, scanning electron microscopy, Xray diffraction, and microhardness measurement. Mg phase is evident for both as-cast and heat-treated alloys while Mg2Sn intermetallic phase is detected in all heat treated alloys except Mg-2Sn-0.5Mn. The dendritic microstructure changed to a microstructure with equiaxed grains after the heat treatment. The increase of Mn in ternary Mg-2Sn-Mn alloys resulted in a microstructure composed of smaller grains. Moreover, microhardness of ternary alloys slightly increased with the addition of Mn.

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Mechanically Assisted Corrosion of Magnesium and Its Alloys

Ghali¹

2010

Corrosion Resistance of Aluminum and Magnesium Alloys

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Fatigue properties of Keronite® coatings on a magnesium alloy

Cited by 175 publications

References 8 publications

Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

Fatigue Behavior of the Rare Earth Rich EV31A Mg Alloy: Influence of Plasma Electrolytic Oxidation

Characterization of Ternary Mg-Sn-Mn Alloys

Mechanically Assisted Corrosion of Magnesium and Its Alloys

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