Mechanical behaviour and microstructural evolution of magnesium alloy AZ31 in tension at different temperatures

Yi, Sangbong; Zaefferer, Stefan; Brokmeier, Heinz Günter

doi:10.1016/j.msea.2006.03.022

Cited by 131 publications

(55 citation statements)

References 19 publications

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“…This fact implies that the anisotropic hardening, namely plastic anisotropy, develops in the early stage of biaxial compressions. The variation of the plastic anisotropy is qualitatively agree with the texture changes shown by Yi et al [10]; the texture evolves by tensile deformation within a small tensile strain of less than 0.1. The texture change is caused mainly by the deformation twinning, which accompanies the orientation change in twined areas.…”

Section: Compressive Plastic Behavioursupporting

confidence: 89%

Plastic behaviour and forming limit during biaxial compressions of magnesium alloy AZ31 at room temperature

Shimizu

Tada

2010

EPJ Web of Conferences

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Abstract. The plastic behaviour and compressive fracture of AZ31 magnesium alloy were examined at room temperature. The uniaxial compression tests and biaxial compression tests along linear and nonlinear strain paths were carried out until fracture using a unique biaxial compression testing machine developed by author. The results revealed the evolution of plastic anisotropy in biaxial compressions, that is the strain path dependency of work hardening. The adaptability of several forming limit criteria to the compressive fracture of AZ31 alloy was discussed. It was found that the uniform estimation of compressive forming limits by uniaxial and biaxial compressions was difficult by Freudenthal criterion and Oyane criterion. The result of Tresca energy criterion suggested that the criterion based on shear stress has possibility to predict the compressive forming limits at room temperature of AZ31 alloy.

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Section: Compressive Plastic Behavioursupporting

confidence: 89%

Plastic behaviour and forming limit during biaxial compressions of magnesium alloy AZ31 at room temperature

Shimizu

Tada

2010

EPJ Web of Conferences

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“…This phenomenon has been reported by Ion et al [46], invoked in several works [59,60], and related to formation of shear bands during large strain hot rolling [15]. In the case of DDRX a well defined relation between the grain size and the maximum stress (or Z ) was reported [55].…”

Section: Effect Of Processing On Grain Size and Texturesupporting

confidence: 61%

“…The predominance of these DRX mechanisms appears to depend on temperature and on the deformation conditions. Humphreys and co-workers [46,57] recognized that DDRX was favoured over RDRX at temperatures higher than about 600 K. The use of the EBSD technique has provided new evidence of RDRX at deformation temperatures below 523 K, and low strain rates [59], and at temperatures as high as 673 K at very high strain rates 10 3 [60]. Summarizing, DDRX is expected in the case of low Zener-Hollomon parameter, Z =ε exp(Q/RT ), while for large values of Z, CDRX or RDRX could take place.…”

Section: Effect Of Processing On Grain Size and Texturementioning

confidence: 99%

Influence of thermomechanical processing on the grain size, texture and mechanical properties of Mg-Al alloys

Srinivasarao¹,

Valle²,

Ruano³

et al. 2012

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The work carried out by the authors over the last decade on the processing, microstructural characterization and the mechanical behaviour of Mg alloys is reviewed. In particular, the potential for grain refinement and for the development of specific textures of large strain hot rolling (LSHR), equal channel angular pressing (ECAP) and accumulative roll bonding (ARB) is discussed. The recrystallization and the deformation mechanisms predominant in Mg alloys are analysed as a function of the grain size and the texture in a wide range of stresses, strain rates and temperatures. Finally, the feasibility of superplastic forming of Mg alloys was examined, taking into account the influence of factors such as grain size stability and microstructural heterogeneities.K e y w o r d s : magnesium alloys,

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“…According to the literature, recrystallization is not usually accompanied by sharp changes in the crystallographic texture. Yi et al (Yi et al, 2006) have reported, for example, that the ODF (orientation distribution function) intensities in AZ31 were similar in the large deformed and small dynamically recrystallized (DRX) grains. (Nevertheless, they did observe a slight shift in the location of the main texture component.)…”

Section: Introductionmentioning

confidence: 99%

Deformation Structures and Recrystallization in Magnesium Alloys

Martin¹,

Mishra²,

Jonas³

2011

Magnesium Alloys - Design, Processing and Properties

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Mechanical behaviour and microstructural evolution of magnesium alloy AZ31 in tension at different temperatures

Cited by 131 publications

References 19 publications

Plastic behaviour and forming limit during biaxial compressions of magnesium alloy AZ31 at room temperature

Plastic behaviour and forming limit during biaxial compressions of magnesium alloy AZ31 at room temperature

Influence of thermomechanical processing on the grain size, texture and mechanical properties of Mg-Al alloys

Deformation Structures and Recrystallization in Magnesium Alloys

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