Equal Channel Angular Processing of Magnesium Alloys

Agnew, Sean R.; Stoica, G.; Chen, L. J.; Lillo, T.M.; Macheret, J.; Liaw, Peter K.

doi:10.1002/9781118804537.ch72

Cited by 14 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[2,173,174] Grain refinement has been regarded as one of the most attractive methods to enhance the performance of magnesium alloys. [175] In addition to grain refinement, substantial texture effects are induced in hcp magnesium alloys by SPD processing.…”

Section: Spd-processed Materials In Biomedical Applicationsmentioning

confidence: 99%

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Valiev

Estrin

Horita

et al. 2015

Materials Research Letters

297

136

View full text Add to dashboard Cite

Bulk nanoSPD materials are materials with nanostructural features, such as nanograins, nanoclusters, or nanotwins, produced by severe plastic deformation (SPD) techniques. Such nanostructured materials are fully dense and contamination free and in many cases they have superior mechanical and functional properties. Here, we provide a critical overview of such materials, with a focus on the fundamentals for the observed extraordinary properties. We discuss the unique nanostructures that lead to the superior properties, the underlying deformation mechanisms, the critical issues that remain to be investigated, future research directions, and the application potential of such materials.

show abstract

Section: Spd-processed Materials In Biomedical Applicationsmentioning

confidence: 99%

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Valiev

Estrin

Horita

et al. 2015

Materials Research Letters

297

136

View full text Add to dashboard Cite

show abstract

“…However, compared to many fcc, bcc, and even hcp materials, the processing of wrought Mg alloys by conventional or SPD techniques has important features associated with (1) specific deformation mechanisms operating in Mg at different temperatures and strain rates [ 93 ] and (2) the pivotal significance of DRX for the microstructure evolution in Mg alloys. While there is an obvious trade-off between the tensile strength and ductility, which often appear to be mutually exclusive properties in deformation processing, i.e., an improvement in one is permitted only at the expense of the other [ 94 ], wrought Mg alloys deviate from this trend [ 95 ]: their ductility benefits strongly from deformation processing to large strains due to a combined effect of grain size reduction, the formation of a favorable crystallographic texture, and the refinement and redistribution of secondary phases [ 67 ]. This permits the development of many versatile processing schemes combining the benefits of different techniques.…”

Section: Mechanical Properties Of Mg-zn-ca Alloysmentioning

confidence: 99%

Attaining High Functional Performance in Biodegradable Mg-Alloys: An Overview of Challenges and Prospects for the Mg-Zn-Ca System

et al. 2023

View full text Add to dashboard Cite

This article presents a concise overview of modern achievements and existing knowledge gaps in the area of biodegradable magnesium alloys. Hundreds of Mg-based alloys have been proposed as candidates for temporary implants, and this number tends to increase day by day. Therefore, while reviewing common aspects of research in this field, we confine ourselves primarily to the popular Mg-Zn-Ca system, taken as a representative example. Over the last decades, research activities in this area have grown enormously and have produced many exciting results. Aiming at highlighting the areas where research efforts are still scarce, we review the state-of-the-art processing techniques and summarize the functional properties attained via a wide variety of processing routes devised towards achieving a desired properties profile, including the mechanical response in terms of strength, ductility, and fatigue resistance paired with biocompatibility and bio-corrosion resistance or controlled degradability. We pay keen attention to a summary of corrosion properties and mechano-chemical interactions between an aggressive environment and loaded Mg-based structures, resulting in stress corrosion cracking and premature corrosion fatigue failures. The polemic issues and challenges practitioners face in their laboratory research are identified and discussed.

show abstract

“…equal channel angular pressing (ECAP), torsion extrusion, accumulative roll bonding (ARB). Recently, the potential of ECA processing to improve the forming properties of magnesium alloys through grain refinement [4,5] and crystallographic texture changes [6] has been explored. Significant grain refinement has been demonstrated in a variety of magnesium alloys ranging from the traditional AZ [4,5] and ZK [5] alloys (with additions of Al, Zn and Zr, respectively) to the newer WE43 [5] alloy.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of an AZ31 Magnesium Alloy Processed by Accumulative Back Extrusion (ABE)

Fatemi-Varzaneh

Cabrera

Zarei-Hanzaki

2010

MSF

View full text Add to dashboard Cite

A new continuous severe plastic deformation (SPD) method called accumulative back extrusion (ABE) was employed to fabricate ultra-fine grained AZ31 Mg alloy. Microstructures of AZ31 alloy processed by ABE up to four passes at a temperature of 230 °C were investigated using field emission scanning electron microscopy (FESEM). The results showed that the initial average grain size of 25 µm was reduced to about 1 µm. It was also found out that the more passes gave more homogenous microstructure. In addition, in order to ﬁnd the effect of grain size on the mechanical properties, micro-tension tests were carried out and the changes in the yield and tensile strength and fracture elongation were analyzed. The obtained tensile properties were discussed relying on the characteristics of as-processed microstructures.

show abstract

Equal Channel Angular Processing of Magnesium Alloys

Cited by 14 publications

References 12 publications

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Attaining High Functional Performance in Biodegradable Mg-Alloys: An Overview of Challenges and Prospects for the Mg-Zn-Ca System

Microstructure and Mechanical Properties of an AZ31 Magnesium Alloy Processed by Accumulative Back Extrusion (ABE)

Contact Info

Product

Resources

About