Microstructure, mechanical and corrosion properties of Mg-4Al-2Sn-xY-0.4Mn alloys

Hu, Yaobo; Zhang, Chao; Meng, Wanqiu; Pan, Fusheng; Zhou, Jiping

doi:10.1016/j.jallcom.2017.08.171

Cited by 30 publications

(13 citation statements)

References 35 publications

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“…The reported EL and YS of the studied alloy and other extruded Mg alloys are shown in Figure 4 b. It could be inferred that the combined tensile properties of the studied alloy were superior than other extruded Mg–Al and/or Mg–Zn based alloys studied in References [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. For instance, the YS of the extruded alloy is 47, 58, 41 and 32.3, 64 MPa higher than that of Mg–Al–Sn based alloys and Mg–Zn in [ 11 , 16 , 18 , 23 ].…”

Section: Resultsmentioning

confidence: 83%

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Cheng

Zhang

et al. 2018

Materials

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A low-alloyed Mg–Sn–Al–Zn system was developed and successfully fabricated through the extrusion process. The dependence of tensile properties and corrosion behavior on microstructural characteristics of the studied alloy has been investigated. After extrusion, the alloy consists of fine dynamically recrystallized (DRXed) grains of ~2.65 μm and strongly textured coarse unDRXed grains. As a consequence, the extruded alloy showed a high-tensile yield strength (YS) of 259 MPa, ultimate tensile strength (UTS) of 297 MPa and elongation (EL) of 19.0%. The strengthening response was discussed in terms of grain size, texture and solutes. The as-extruded alloy presented severe pitting corrosion and the dependence of corrosion properties on the crystallographic orientation and the formation of corrosion products was analyzed.

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Section: Resultsmentioning

confidence: 83%

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Cheng

Zhang

et al. 2018

Materials

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“…Nevertheless, the suppression of tensile twinning via precipitates is not clear and a lot of efforts are necessary to figure out why. Previously, some literatures have reported that the second phase particles with a large diameter above 1 μm are able to promote the DRx and the newly created grain has a random texture facilitating randomizing the strong basal texture, thus favoring secondary forming [37][38][39][40][41]. It is not surprising that the basal-type texture intensities were in a progressive decreasing trend in the rolled AZ80 magnesium alloys pre-aged for 75 min, 160 min, 200 min, but to our surprise, the basal-type texture intensity of the rolled AZ80 magnesium alloys pre-aged for 240 min sharply increased compared to the rolled AZ80 magnesium alloys pre-aged for 200 min (Figure 6).…”

Section: The Microstructure Texture Analysis Of the Pre-aged Az80 Mamentioning

confidence: 99%

Microstructure and Mechanical Properties of Aged and Hot Rolled AZ80 Magnesium Alloy Sheets

Zhao

et al. 2019

Crystals

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This study focused on the effects of ageing for various time at 175 °C before hot rolling on microstructure and mechanical properties of AZ80 magnesium alloys. The amount of γ-Mg17Al12 increased in line with ageing time and during the rolling process could facilitate the fine grains and sub-grains, which resulted in an inhomogeneous or bimodal microstructure, and weakening basal-type texture intensity or occurrence of double-peak texture. However, a larger quantity of γ-Mg17Al12 distributed on the matrix in the alloy aged for 240 min, or the precipitates decorating the grain boundaries in the alloy aged for 75 min, were detrimental to the mechanical properties, and lower ultimate tensile strength with elongation were obtained in the two alloys as a result. When the alloy was aged for 200 min, it showed an optimum mechanical property with its yield strength of 281 MPa, ultimate tensile strength of 363 MPa and a medium elongation of 13.3%, which was mainly attributed to the interaction of the hard second phase particles with dislocation movement and the lowest basal-type texture intensity that favored the basal slip.

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“…Meanwhile, they found smaller Al 2 Y particles and unknown particles precipitated during heat treatment . Very recently, Hu et al reported that addition of Y into Mg–4Al–2Sn–0.4Mn alloy leads to the formation of irregular polygonal massive Al 2 Y phase distributed along grain boundaries, which could act as a hard phase for resisting deformation. However, there are no further reports to clarify the similarity and difference between these phases and the active larger Al 2 Y particles.…”

Section: Introductionmentioning

confidence: 99%

Atomic‐Scale Insight into Structure and Interface of Al₂Y Phase in an Mg–Al–Y Alloy

et al. 2018

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Atomic-scale structure of Al 2 Y phase and its interface with magnesium matrix in an Mg-1Al-6.2Y (wt%) alloy have been investigated using scanning transmission electron microscopy (STEM) and density-functional theory (DFT). Apart from micro-sized Al 2 Y particles in the interior of grains or along grain boundaries, nano-sized Al 2 Y lamella with a large aspect ratio precipitates within the grains. Y À enriched stacking faults are introduced at the lamellar Al 2 Y/Mg interface due to 0.07% lattice misfit between (022) Al2Y and 0 110Þ ð Mg planes. The first-principles simulation clarifies that Al 2 Y/Mg interface is energetically occupied by Al atoms other than Y atoms.

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Microstructure, mechanical and corrosion properties of Mg-4Al-2Sn-xY-0.4Mn alloys

Cited by 30 publications

References 35 publications

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Microstructure and Mechanical Properties of Aged and Hot Rolled AZ80 Magnesium Alloy Sheets

Atomic‐Scale Insight into Structure and Interface of Al₂Y Phase in an Mg–Al–Y Alloy

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Microstructure, mechanical and corrosion properties of Mg-4Al-2Sn-xY-0.4Mn alloys

Cited by 30 publications

References 35 publications

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Tensile Properties and Corrosion Behavior of Extruded Low-Alloyed Mg–1Sn–1Al–1Zn Alloy: The Influence of Microstructural Characteristics

Microstructure and Mechanical Properties of Aged and Hot Rolled AZ80 Magnesium Alloy Sheets

Atomic‐Scale Insight into Structure and Interface of Al2Y Phase in an Mg–Al–Y Alloy

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Atomic‐Scale Insight into Structure and Interface of Al₂Y Phase in an Mg–Al–Y Alloy