Effects of percent reduction and specimen orientation on the ratcheting behavior of hot-rolled AZ31B magnesium alloy

Zhang, H.; Dong, Delong; Ma, Shaojie; Gu, C.F.; Chen, S.; Zhang, X.P.

doi:10.1016/j.msea.2013.03.074

Cited by 21 publications

(5 citation statements)

References 21 publications

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“…Studies were conducted the fatigue behavior of wrought Mg-Al-Zn alloys including extruded AZ31 [3][4], extruded AZ61 [1,5], and rolled AZ31 or AZ31B [6][7][8][9][10][11][12][13][14][15]. Limited fatigue experiments were conducted using the rolled Mg alloys whose loading axial directions were oriented parallel to the transverse direction (TD), rolled direction (RD), and normal direction (ND).…”

Section: Introductionmentioning

confidence: 99%

“…Lv et al [12][13] compared the fatigue properties of a rolled AZ31 alloy along different orientations under both the stress-controlled and strain-controlled cyclic loading, and found that the fatigue lives of the TD samples were longer than these of the RD samples. Zhang et al [15] reported the effects of sample orientation on the ratcheting behavior of a hot-rolled AZ31B Mg alloy. These studies indicate that the initial orientation of the testing specimen with respect to the rolled direction plays an important role on the mechanical properties and fatigue resistance of wrought Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

“…The effect of otherorientations on fatigue behavior has not been well understood. On the other hand, the rolled sheet were usually used to study the influence of material orientation on mechanical properties [2,[11][12][13]15]. The problem is that the loading path of differentorientation specimens is on the same RD-TD plane, namely, loading direction is perpendicular to the c-axes of the crystallographicallattice.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic deformation and fatigue of rolled AZ80 magnesium alloy along different material orientations

Xiong

Jiang

2016

Materials Science and Engineering: A

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The effect ofmaterialorientation on cyclic deformation and fatigue behavior of rolled AZ80 magnesium (Mg) alloy was experimentally investigated under fully reversed strain-controlled loading in ambient. The testing specimens were taken from a rolled AZ80 Mg plate at four orientations with respect to rolled plane: 0˚(ND, normal direction), 30˚(ND30), 60˚(ND60), and 90˚(RD, rolled direction). Fatigue fracture morphologies of specimens along differentorientation wereanalyzed by scanning electron microscopy (SEM).Overall cyclic hardening was observed for the material loaded in different directions. For a given strain amplitude, the ND specimens had the lowest fatigue resistance among the specimens of all material orientations.The fatigue lifeof an ND30 specimens is similar to that of an ND60 specimenat a given strain amplitude and both are higher than that of anRD specimenwhenthe strain amplitude is higher than 0.4%, whereasanRD specimen exhibits a better fatigue resistancewhen the strain amplitude is lower than 0.4%. A mixed fracture mode with transgranular and intergranularcracking related tolamellar-like features occurred during stablecrackgrowth, and anintergranular fracture moderelated todimple-likefeatures exhibited inthe fast fracture region. A multiaxial fatigue model based on the strain energy density can correlate all the fatigue experiments of the material at different material orientations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cyclic deformation and fatigue of rolled AZ80 magnesium alloy along different material orientations

Xiong

Jiang

2016

Materials Science and Engineering: A

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“…Thus, numerous studies have been recently conducted to understand corrosion behavior of these alloys. Among these alloys, AZ31B is renowned as workable alloy [5]. Using the light metals such as aluminum is an excellent alternative for steel in automobile manufactories.…”

Section: Introductionmentioning

confidence: 99%

Wettability and corrosion of alumina embedded nanocomposite MAO coating on nanocrystalline AZ31B magnesium alloy

Gheytani

Mahmood

Bagheri

et al. 2015

Journal of Alloys and Compounds

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“…To achieve an arbitrary homogeneous deformation in a polycrystalline material, five independent slip systems are required to be activated [ 15 , 16 ]. A wide range of crystal orientations was observed in the post-fatigued specimens, leading to a significant weakening of the basal texture [ 17 ]. Specimen microstructure changes because of the activated slip and twin system under alternating loads [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Ratcheting Strain and Microstructure Evolution of AZ31B Magnesium Alloy under a Tensile-Tensile Cyclic Loading

Yan

Wang

et al. 2018

Materials

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In this paper, studies were conducted to investigate the deformation behavior and microstructure change in a hot-rolled AZ31B magnesium alloy during a tensile-tensile cyclic loading. The relationship between ratcheting effect and microstructure change was discussed. The ratcheting effect in the material during current tensile-tensile fatigue loading exceeds the material’s fatigue limit and the development of ratcheting strain in the material experienced three stages: initial sharp increase stage (Stage I); steady stage (Stage II); and final abrupt increase stage (Stage III). Microstructure changes in Stage I and Stage II are mainly caused by activation of basal slip system. The Extra Geometrically Necessary Dislocations (GNDs) were also calculated to discuss the relationship between the dislocation caused by the basal slip system and the ratcheting strain during the cyclic loading. In Stage III, both the basal slip and the {11−20} twins are found active during the crack propagation. The fatigue crack initiation in the AZ31B magnesium alloy is found due to the basal slip and the {11−20} tensile twins.

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Effects of percent reduction and specimen orientation on the ratcheting behavior of hot-rolled AZ31B magnesium alloy

Cited by 21 publications

References 21 publications

Cyclic deformation and fatigue of rolled AZ80 magnesium alloy along different material orientations

Cyclic deformation and fatigue of rolled AZ80 magnesium alloy along different material orientations

Wettability and corrosion of alumina embedded nanocomposite MAO coating on nanocrystalline AZ31B magnesium alloy

Ratcheting Strain and Microstructure Evolution of AZ31B Magnesium Alloy under a Tensile-Tensile Cyclic Loading

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