Fatigue deformation characteristic of as-extruded AM30 magnesium alloy

Luo, Tian; Yang, Yuansheng; Tong, Wei; Duan, Qingling; Dong, Xu

doi:10.1016/j.matdes.2009.08.042

Cited by 34 publications

(28 citation statements)

References 12 publications

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“…The fatigue life (i.e., the number of cycles to failure, N f ) as a function of the applied total strain amplitudes De t =2 ð Þ of the GW103K alloy in the as-extruded, T5, and T6 states is shown in Figure 9, along with the experimental data reported in the literature for various extruded Mg alloys [11,12,17,63,[73][74][75] for comparison. The Fig.…”

Section: E Fatigue Life and Fatigue Parametersmentioning

confidence: 99%

“…Overall, the alloy basically showed an improved fatigue life than the RE-free extruded Mg alloys. [11,12,63,[73][74][75] Based on the Basquin's equation and Coffin-Manson relation and as described in References 10, 12, 13, 70, 76, 77, the total strain amplitude could be expressed as two parts of elastic strain amplitude and plastic strain amplitude, i.e.,…”

Section: E Fatigue Life and Fatigue Parametersmentioning

confidence: 99%

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Cyclic Deformation Behavior of a Rare-Earth Containing Extruded Magnesium Alloy: Effect of Heat Treatment

Mirza

Chen

et al. 2014

Metall Mater Trans A

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The present study was aimed at evaluating strain-controlled cyclic deformation behavior of a rareearth (RE) element containing Mg-10Gd-3Y-0.5Zr (GW103K) alloy in different states (as-extruded, peak-aged (T5), and solution-treated and peak-aged (T6)). The addition of RE elements led to an effective grain refinement and weak texture in the as-extruded alloy. While heat treatment resulted in a grain growth modestly in the T5 state and significantly in the T6 state, a high density of nano-sized and bamboo-leaf/plate-shaped b¢ (Mg 7 (Gd,Y)) precipitates was observed to distribute uniformly in the a-Mg matrix. The yield strength and ultimate tensile strength, as well as the maximum and minimum peak stresses during cyclic deformation in the T5 and T6 states were significantly higher than those in the as-extruded state. Unlike RE-free extruded Mg alloys, symmetrical hysteresis loops in tension and compression and cyclic stabilization were present in the GW103K alloy in different states. The fatigue life of this alloy in the three conditions, which could be well described by the Coffin-Manson law and Basquin's equation, was equivalent within the experimental scatter and was longer than that of RE-free extruded Mg alloys. This was predominantly attributed to the presence of the relatively weak texture and the suppression of twinning activities stemming from the fine grain sizes and especially RE-containing b¢ precipitates. Fatigue crack was observed to initiate from the specimen surface in all the three alloy states and the initiation site contained some cleavage-like facets after T6 heat treatment. Crack propagation was characterized mainly by the characteristic fatigue striations.

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Section: E Fatigue Life and Fatigue Parametersmentioning

confidence: 99%

Section: E Fatigue Life and Fatigue Parametersmentioning

confidence: 99%

Cyclic Deformation Behavior of a Rare-Earth Containing Extruded Magnesium Alloy: Effect of Heat Treatment

Mirza

Chen

et al. 2014

Metall Mater Trans A

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“…Low-cycle fatigue behavior of Mg alloys under fully reversed strain (or stress) controlled tension-compression have been extensively studied in the last decade [4,6,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Recently, cyclic deformation and fatigue properties of Mg alloys under multiaxial cyclic loading were also explored by several investigators [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Effect of strain ratio on cyclic deformation and fatigue of extruded AZ61A magnesium alloy

Zhang

Jiang

et al. 2012

International Journal of Fatigue

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“…Low density, high specific strength [1] , good damping capacity, good electromagnetic shielding capability, and ease of recycling have made them an interesting material for designers. Magnesium alloys are being considered as advanced materials that can comply with energy conservation and environmental pollution [2] regulations, so their application has rapidly increased in recent years [3][4][5] . For the applications to the loadbearing components, it is necessary to evaluate the fatigue properties of the magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

As-extruded AZ31B magnesium alloy fatigue crack propagation behavior

Zhang

Wang

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The fatigue crack propagation rate of as-extruded AZ31B magnesium alloy was studied.Compact tension [C(T)] of the notch direction parallel (T-L), vertical (L-T), and inclined at 45º to the extrusion direction was investigated. The experimental results indicate that the crack propagation direction is parallel to the extrusion direction for T-L and L-T specimens, whereas the specimen inclined at 45º has an angular defl ection of 9° to 11° toward the extrusion direction. The T-L specimen has the fastest fatigue crack propagation rate, and the L-T specimen has the slowest rate, the fatigue crack propagation rate of the specimen inclined at 45º is between the two directions. The crack tip propagates by both transgranular and intergranular fractures. Fatigue fractures consist of cleavage plane or quasi-cleavage and are brittle fractures. The fatigue striation occurs for specimens inclined at 45º and its size is 3-15 μm.

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Fatigue deformation characteristic of as-extruded AM30 magnesium alloy

Cited by 34 publications

References 12 publications

Cyclic Deformation Behavior of a Rare-Earth Containing Extruded Magnesium Alloy: Effect of Heat Treatment

Cyclic Deformation Behavior of a Rare-Earth Containing Extruded Magnesium Alloy: Effect of Heat Treatment

Effect of strain ratio on cyclic deformation and fatigue of extruded AZ61A magnesium alloy

As-extruded AZ31B magnesium alloy fatigue crack propagation behavior

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