Production of ultrafine-grain microstructure in Mg alloy by alternate biaxial reverse corrugation

Yang, Qi; Ghosh, Atasi

doi:10.1016/j.actamat.2006.06.045

Cited by 77 publications

(35 citation statements)

References 16 publications

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“…In case of pure magnesium it was reported that ECAP processing resulted in a ultrafined microstructure (d ave =0.8 µm) accompanied with a enhanced both MCSand fracture strain [26]. Similar results were obtained by ghosh and yong [27] for an AZ31 alloy deformed by Alternate biaxial reverse corrugation. It is worth noting that the ABEed alloy exhibits serrated flow during compression which resembles that observed by Trojanova and Caceres in aged AZ91 magnesium alloy [28,29].…”

Section: Resultssupporting

confidence: 76%

Compressive Deformation Behavior of an Ultrafine/Nano Grained AZ31 Magnesium Processed by Accumulative Back Extrusion

Fatemi-Varzaneh¹,

Zarei-Hanzaki²,

Paul³

2016

Archives of Metallurgy and Materials

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An AZ31magneium alloy was processed through accumulative back extrusion (ABE) process at 280 °C up to six passes. Compressive deformation behavior of the processed materials was studied by employing uniaxial compression tests at room temperature. The results indicated that grains of 80 nm to 1 µm size were formed during accumulative back extrusion, where the mean grain size of the experimental material was reduced by applying successive ABE passes. A deformation texture characterizing with the basal plane mainly lie inclined to the deformation axis was developed. Compressive yield and maximum compressive strengths were measured to increase by applying successive extrusion passes, while the strain-to-fracture dropped. The evolution of mechanical properties was explained relying on the grain refinement effect as well as texture change. It was described that the share of different deformation mechanisms and developing of shearing regions near the grain boundaries may influence the deformation behavior of the ultrafine/nano grained AZ31 alloy.

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Section: Resultssupporting

confidence: 76%

Compressive Deformation Behavior of an Ultrafine/Nano Grained AZ31 Magnesium Processed by Accumulative Back Extrusion

Fatemi-Varzaneh¹,

Zarei-Hanzaki²,

Paul³

2016

Archives of Metallurgy and Materials

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“…Equal channel angle extrusion (ECAE) [4], severe hot rolling [5], accumulated roll bonding [6], and biaxial reverse corrugation [7] have all been shown to be capable of producing grain sizes in AZ31 of less than 3 m, and one report of 8 pass ECAE has yielded a grain size of just 0.7 m [8]. Friction stir processing is another method that has been shown to decrease the grain size of AZ31 below the 1 m barrier, and grain sizes in the range of 100-300 nm have been reported [9].…”

Section: Introductionmentioning

confidence: 99%

Fine grained AZ31 produced by conventional thermo-mechanical processing

Stanford

Barnett

2008

Journal of Alloys and Compounds

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“…They used the AZ31 Mg alloy, having similar basal fiber texture, [28] and performed the deformation at room temperature with the loading orientation perpendicular to the c-axis (the in-plane compression in Reference 21). The D c value found by Yang and Ghosh [21] is 1.4 lm, and in the present work, the D c value is smaller than 0.46 lm.…”

Section: Discussionmentioning

confidence: 99%

Deformation Structure of Unidirectionally Compressed Ultrafine-Grained Mg-3Al-1Zn Alloy

Lee

Ding

Sun

et al. 2011

Metall Mater Trans A

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Ultrafine-grained (UFG) Mg-3Al-1Zn (AZ31) alloys with gain sizes ranging from 0.46 to 3.22 lm were prepared by equal channel angular pressing (ECAP) and annealing. The deformation structure of UFG AZ31 alloy resulting from uniaxial compression was studied by optical and electron microscopy. The deformation was noted to proceed with the development of shear bands (SBs), which has not been reported in an UFG hcp metal. Characterization of these SBs was performed, and comparison with the SBs formed in UFG bcc and fcc metals was given. f10 " 12g tension twins inside SBs were found in all specimens compressed, irrespective of the grain size. Discussion on the limiting grain size of twinning in the UFG AZ31 alloy is also given.

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Production of ultrafine-grain microstructure in Mg alloy by alternate biaxial reverse corrugation

Cited by 77 publications

References 16 publications

Compressive Deformation Behavior of an Ultrafine/Nano Grained AZ31 Magnesium Processed by Accumulative Back Extrusion

Compressive Deformation Behavior of an Ultrafine/Nano Grained AZ31 Magnesium Processed by Accumulative Back Extrusion

Fine grained AZ31 produced by conventional thermo-mechanical processing

Deformation Structure of Unidirectionally Compressed Ultrafine-Grained Mg-3Al-1Zn Alloy

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