Effects of Processing, Texture and Temperature on the Formability of AZ31 and ZE10 Sheets

Letzig, Dietmar; Stutz, Lennart; Bohlen, Jan; Kainer, Karl Ulrich

doi:10.4028/www.scientific.net/msf.690.298

Cited by 6 publications

(10 citation statements)

References 9 publications

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“…Forming limit diagrams plot the strains at failure within the sheet plane (RD and TD directions) during deformation, ranging from biaxial to uniaxial tension. The curve for the RE alloy ZEK100 is approximately 0?2 true strain higher than AZ31 under all strain conditions, 29 almost equivalent to a typical aluminium alloy. The improved formability is primarily attributed to the significantly weaker texture in the RE alloy.…”

Section: Introduction To Magnesium Alloysmentioning

confidence: 81%

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Explaining texture weakening and improved formability in magnesium rare earth alloys

Griffiths

2015

Materials Science and Technology

205

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Wrought magnesium alloys are rarely used due to their poor formability which is caused by strong textures created during processing. Addition of rare earth (RE) elements including Y, Ce, La, Gd and Nd weakens these strong basal textures and significantly improves formability. Developing a mechanistic understanding of this effect is critical in leading alloy design towards a new class of highly formable magnesium alloys. This fall in texture intensity occurs during recrystallisation and only requires very low solute RE additions, 0·01 at.- in the magnesium–Ce case. These additions retard dynamic recrystallisation and increase non-basal slip; however, a full understanding of the RE effect has yet to be obtained, with a variety of mechanisms proposed. Recent research in these areas is critically reviewed.

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Section: Introduction To Magnesium Alloysmentioning

confidence: 81%

“…25 The improvements in ductility are accompanied by reduced yield anisotropy,which is nearly eliminated in many RE alloys. 6,18,26 Improvements in sheet formability [27][28][29] are clearly demonstrated in Fig. 5, showing a forming limit diagram for non-RE magnesium, RE magnesium and a typical aluminium alloy.…”

Section: Introduction To Magnesium Alloysmentioning

confidence: 93%

Explaining texture weakening and improved formability in magnesium rare earth alloys

Griffiths

2015

Materials Science and Technology

205

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“…Another factor controlling ductility and strength of Mg alloys is texture. 258,259 It is, however, still not well understood what role the texture plays in terms of corrosion performance of Mg alloys. Although work exists relating texture to corrosion, 260,261 the variation with minor changes in texture across a bulk alloy is likely to not be an overwhelming factor in contrast to chemical addition.…”

Section: Prospects and Aspects For Retarding The Corrosion Kinetics O...mentioning

confidence: 99%

Corrosion of magnesium alloys: the role of alloying

Gusieva

Davies

Scully

et al. 2014

International Materials Reviews

427

208

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The demand for light-weighting in transport and consumer electronics has seen rapid growth in the commercial usage of magnesium (Mg). The major use of Mg is now in cast Mg products, as opposed to the use of Mg as an alloying element in other alloy systems and there is an emerging market of wrought Mg products and biomedical Mg components -such that the past two decades have seen a significant number of new Mg-alloys reported. None-the-less, the corrosion of Mg alloys continues to be a challenge facing engineers seeking weight reductions by deployment of Mg. Herein, authors review the influence of alloying on the corrosion of Mg-alloys, with particular emphasis on the underlying electrochemical kinetics that dictate the ultimate corrosion rate. Such a review focusing on the chemistry-corrosion link, both in depth and in a holistic approach, is lacking. As such the authors do not describe aspects such as high-temperature oxidation or cracking, but focus on delivering the state-of-the-art with regards to alloying influences on corrosion kinetics. It has been demonstrated that Mg itself will not be thermodynamically passive in environments of pH,11, regardless of the extent and type of alloying and hence corrosion kinetics require unique attention. Authors consolidate the presentation to include essentially all commercially available alloys and in excess of 350 custom alloys with wide variations in composition; in addition to reviewing the range of intermetallic compounds and impurities that form in such alloys systems. An update is also given regarding mechanistic advances and the role of grain size on corrosion of Mg. A wider understanding of the role of chemical effects upon corrosion of Mg is both timely and serves to highlight metallurgical approaches towards kinetically retarding the corrosion problem. The latter is of key relevance to next generation lightweight alloys and rational design of wrought Mg and bio-Mg.

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“…In general, most Mg alloys have strong texture, with asymmetric spread of basal poles, which leads to anisotropy of tensile properties. [86] It is more difficult to deform the material through prismatic and pyramidal slips at room temperature than the basal slip system, as prismatic and pyramidal slip systems typically require higher stress to activate than basal slip. [41,87] Recently, researchers have looked into how texture affects the shielding capabilities of magnesium alloys.…”

Section: Texturementioning

confidence: 99%

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

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Magnesium‐alloy (Mg‐alloy) materials have attracted considerable attention recently due to their potential applications in electromagnetic interference (EMI) shielding. EMI shielding is a technique to prevent unwanted electromagnetic fields from interfering with the regular operation of electronic devices and systems. EMI shielding is essential for electronics, communication, computers, aerospace, and defence, where high performance and reliability are required. A material’s EMI shielding effectiveness (SE) depends on several factors: its conductivity, magnetic permeability, reflectivity, absorption, and multiple scattering. Mg‐alloys have several advantages over other conventional shielding materials, such as Al‐alloys. These alloys have a lower density, higher specific strength and stiffness, and a higher damping capacity. Mg‐alloys also have high conductivity and magnetic permeability, which can enhance the SE of the material. Moreover, through various methods, such as alloying, heat treatment, surface treatment, and composite fabrication, Mg alloys can be modified to improve their SE and other properties. This review summarizes the recent progress and challenges in developing Mg‐alloy materials for EMI shielding applications. We discuss the effects of different factors on Mg‐alloys’ SE, such as composition, microstructure, frequency, and thickness. Also, we discuss the importance of Mg‐Li alloys and why they are better electromagnetic shielding materials than conventional Mg alloys. Finally, we provide some perspectives and suggestions for future research directions.This article is protected by copyright. All rights reserved.

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Effects of Processing, Texture and Temperature on the Formability of AZ31 and ZE10 Sheets

Cited by 6 publications

References 9 publications

Explaining texture weakening and improved formability in magnesium rare earth alloys

Explaining texture weakening and improved formability in magnesium rare earth alloys

Corrosion of magnesium alloys: the role of alloying

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

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