The Influence of the Structure on the Fatigue Properties of Al-Mg Cast Alloy

Uhríčik, Milan; Palček, Peter; Chalupová, Mária; Oravcová, Monika; Frkáň, M.

doi:10.1515/amm-2017-0247

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Therefore, the results of the uniaxial fatigue tests can only approximate to the needs of a practical prediction of life fatigue with difficulty. The approximation of the results from the multiaxial fatigue tests are more advantageous [ 30 , 31 ]. As we have already mentioned, various load combinations occur in reality.…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of the Manson−Coffin Curves for an Original Unconventional Vehicle Frame

et al. 2020

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This article is divided into two parts—in the first part, authors inform about their testing device that enables the acquisition of results from uniaxial and multiaxial fatigue tests (the bending−torsion combination). We present the approaches used during designing and building the testing device. The direct implementation of the research in the second part will concentrate on implementing the acquired results for the frame design of a vehicle worked out by the authors. The three-wheeled vehicle has the front steered wheel suspended in an unconventional way. This original design can cause an increased load on the vehicle’s frame. This can be apparent mainly during driving through curves. Therefore, the fatigue curves of the tested material (EN AW 6063) will be implemented from the point of view of its usability in operation. A vehicle frame is most often loaded by bending and torsion. The authors assess the influence of welding on the fatigue life of this unique unconventional vehicle by determining the fatigue curves of the material for its production. The stresses achieved on the test specimens fully correspond to the load of the frame (in welds) during its operation.

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Section: Introductionmentioning

confidence: 99%

Experimental Determination of the Manson−Coffin Curves for an Original Unconventional Vehicle Frame

et al. 2020

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The influence of quenching on fatigue life of Ti6Al4V alloy

Belán

Bokůvka

Uhríčik

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Titanium Ti6Al4V alloy falls into the α+β category alloy system. It is widely used due to its unique mechanical and physical properties which can be modified by applied heat-treatment. The α-phase is considered to be the main phase influencing mechanical properties of an alloy such as ultimate tensile strength or ductility. However, it has also influence on the fatigue life where the form and presence of α-phase in prior β grains may increase or decrease fatigue life. The length and width of α-lamellae influence on fatigue life is well-known. A lot of authors have done their experiments on alloys with Widmanstätten or acicular α-phase structures. Our goal was to obtain an α’-martensitic structure in prior p grains and investigate its influence on fatigue life. To fulfil this goal the heat-treatment consisted of heating near above β-transus temperature 1050°C for a dwell time of 3 hours followed by water quenching was applied. After heat-treatment, the set of specimens with dimensions 10 mm x 9 mm x 55 mm were subjected to three-point bending fatigue test with the parameter of cycles asymmetry R < 1 and test frequency f = 69 Hz. The S-N curve of fatigue life was plotted after the fatigue test and SEM fractography analysis of fractured surfaces was done as well. Our results were compared to previous fatigue test done on alloy with α-lamellae structure.

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The Influence of the Structure on the Fatigue Properties of Al-Mg Cast Alloy

Cited by 2 publications

References 5 publications

Experimental Determination of the Manson−Coffin Curves for an Original Unconventional Vehicle Frame

Experimental Determination of the Manson−Coffin Curves for an Original Unconventional Vehicle Frame

The influence of quenching on fatigue life of Ti6Al4V alloy

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