Dietmar Letzig
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Tailoring the mechanical properties of the multicomponent lightweight alloy Al58Zn28Mg6Si8 via composition and processing-route engineering Open
In this study, the multicomponent (medium entropy) lightweight alloy Al58Zn28Mg6Si8 was systematically improved through a dual optimization strategy. First, the chemical composition was adjusted using the CALPHAD methodology, reducing the …
View article: On the heterogeneous microstructure and strengthening mechanisms in a laser welding AZ80 magnesium alloy
On the heterogeneous microstructure and strengthening mechanisms in a laser welding AZ80 magnesium alloy Open
This study investigates the microstructural characteristics and mechanical properties of a laser welded AZ80 magnesium alloy. The welding process led to the formation of coarse-grained fusion zone (FZ), where a secondary phase formed conti…
Behavior of microstructure and mechanical properties in the stir zone of friction stir welded ME21 magnesium alloy Open
In this work, Friction Stir Welding (FSW) of magnesium alloy ME21 in a T-profile is performed with a relatively higher welding speed than usual in this material. The FSW process parameters, i.e., rotational speed and welding speed, are inv…
Effects of Zn Addition and Twin Roll Casting Process on the Microstructure, Texture, and Mechanical Properties of the Mg-Al-Mn-Ca Sheet Open
In this work, the microstructure and texture of Mg-1.0Al-xZn-0.2Mn-0.5Ca (wt.%, x = 0, 1) alloys, which were produced via conventional casting or twin roll casting (TRC), were investigated, and their relation to the mechanical properties o…
Exploring the relationship between sputter-deposition conditions and electrochemical response of ZrO2 films on biodegradable MgZnCa alloy Open
In this work, we investigated the enhancement of corrosion resistance in a biodegradable Mg-0.7Zn-0.6Ca (wt. %) alloy (MgZnCa) by applying ZrO2 thin films deposited via reactive magnetron sputtering. We employed a fractional factorial expe…
Advanced direct extrusion process with real-time controllable extrusion parameters for microstructure optimization of magnesium alloys Open
The extrusion speed and deformation temperature are important factors affecting the microstructure development during the deformation. Microstructure development plays a crucial role in the performance of the mechanical properties of mater…
Analysis of the dislocation activity of Mg–Zn–Y alloy using synchrotron radiation under tensile loading Open
An understanding of deformation behavior and texture development is crucial for the formability improvement of Mg alloys. X-ray line profile analysis using the convolutional multiple whole profile (CMWP) fitting method allows the experimen…
Development of a Metal-Based Lightweight Approach Consisting of Cold-Formable Magnesium Sheets in Combination with a Multi-Purpose Powder Coating System Open
This paper will give an overview about the development of a material system, which consists of a novel formable magnesium alloy that is provided with an effective corrosion protection coating. The corrosion protection is to be realized in …
Effect of Process Temperature on the Texture Evolution and Mechanical Properties of Rolled and Extruded AZ31 Flat Products Open
The application of magnesium flat products is affected by the limited formability at room temperature and the anisotropy of the mechanical properties. The main reason for this is the underlying hexagonal crystal structure of magnesium and …
Microstructure-Mechanical Properties and Application of Magnesium Alloys Open
This Special Issue reprint book features a broad scope of contributions that highlight current accomplishments and provide readers with some perspective on the direction of research on magnesium alloys in the near future with respect to gl…
Non-flammable magnesium sheet alloys with an excellent age-hardenability Open
Microstructure, crystallographic texture and age hardenability of the non-flammable Mg-Al-Zn-Ca-Y alloy sheets were investigated as a systematic compositional change. By reducing the Al content to 1 wt.%, fine and homogeneous microstructur…
Degradation Behavior and Mechanical Integrity of a Mg-0.7Zn-0.6Ca (wt.%) Alloy: Effect of Grain Sizes and Crystallographic Texture Open
The microstructural characteristics of biodegradable Mg alloys determine their performance and appropriateness for orthopedic fixation applications. In this work, the effect of the annealing treatment of a Mg-0.7Zn-0.6Ca (ZX11) alloy on th…
Microstructure–Mechanical Properties and Application of Magnesium Alloys Open
Transport is a major contributor to CO2 emissions and is considered the most urgent global climate problem [...]
Biocompatibility and electrochemical evaluation of ZrO2 thin films deposited by reactive magnetron sputtering on MgZnCa alloy Open
Biodegradable magnesium alloys are promising candidates for temporary fracture fixation devices in orthopedics; nevertheless, its fast degradation rate at the initial stage after implantation remains as one of the main challenges to be res…
Superplasticity at Intermediate Temperatures of ZK60 Magnesium Alloy Processed by Indirect Extrusion Open
Magnesium alloys usually exhibit excellent superplasticity at high temperature. However, many Mg alloys have poor formation ability near room temperature. Therefore, preparation of Mg alloys with suitable microstructures to show low or int…
Influence of Twin-Roll Casting Speed on Microstructural Homogeneity, Centerline Segregation, and Surface Quality of Three Different Mg Alloys Open
In this work, the influence of twin-roll casting (TRC) speed on the microstructure of the through-thickness uniformity, centerline segregation, and surface quality of three wrought Mg alloys was investigated. The microstructural features o…
Texture development and dislocation activities in Mg-Nd and Mg-Ca alloy sheets Open
Texture modification during sheet rolling appears differently in binary Mg-RE (rare-earth) or Mg-Ca alloy, compared to their ternary counterparts containing Zn. The differences in texture development and the active deformation mechanisms u…
Effect of Al Content on Texture Evolution and Recrystallization Behavior of Non-Flammable Magnesium Sheet Alloys Open
The effect of Al content on the texture evolution and recrystallization behavior of the non-flammable Mg sheet alloys containing Ca and Y was investigated in this study. With a decrease in the Al content from 3 wt.% to 1 wt.%, the amounts …
Excellent age hardenability with the controllable microstructure of AXW100 magnesium sheet alloy Open
Age-hardenability and corresponding improvement of the mechanical properties of Mg–1Al–0.7Ca and Mg–1Al–0.7Ca–0.7Y alloy sheets are addressed with respect to the microstructure and texture evolution during thermomechanical treatments. A fi…
Alloying effect of silver in magnesium on the development of microstructure and mechanical properties by indirect extrusion Open
The effect of Ag in solid solution on the microstructure, texture and the deformation behaviour of indirectly extruded Mg was investigated. Ag as a solid solution strengthener affects the behaviour during extrusion, resulting in enhanced d…
On the Direct Extrusion of Magnesium Wires from Mg-Al-Zn Series Alloys Open
Wires of magnesium alloys possess a high potential, e.g., as filler materials, for joining applications but also for biodegradable applications, such as suture materials. While the typical process of producing wires is based on a wire draw…
Alloying and Processing Effects on the Microstructure, Mechanical Properties, and Degradation Behavior of Extruded Magnesium Alloys Containing Calcium, Cerium, or Silver Open
Magnesium alloys attract attention as degradable implant materials due to their adjustable corrosion properties and biocompatibility. In the last few decades, especially wrought magnesium alloys with enhanced mechanical properties have bee…