𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Forging of Mg-Alloys AZ31 and AZ80

✍ Scribed by B. Viehweger; A. Karabet; M. Düring;; L. Schaeffer


Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
403 KB
Volume
36
Category
Article
ISSN
0933-5137

No coin nor oath required. For personal study only.

✦ Synopsis


Mg-wrought alloys recently became an engineer material of constantly increasing interest. The mechanical properties of extruded Mg-feedstock of the alloys AZ80 and AZ31 indicate their suitability for automotive applications in form of high-quality forgings. Therefore a detailed knowledge about the forming behaviour is of particular importance. In order to compare mechanical properties of available Mg-feedstock qualities compression tests at room temperature have been carried out by applying batches of AZ31-and AZ80-feedstock. Cylindrical specimens were made out of received continuously casted as well as extruded AZ31-and AZ80 -rods. A quantitative analysis of Mg-feedstock's microstructure has been carried out. The characterization of the deformability of applied Mg-feedstock under hot working conditions could be performed by means of uniaxial plain strain upsetting tests at temperatures between 300 and 450 C as well as logarithmic strain rates of 10 -1 , 1 and 10s -1 . It is shown that the chosen parameter range ensures an enhanced deformability of continuously as well as extruded Mgfeedstock. The subsequently carried out determination of microstructural evolution could be related to obtained flow stress curves of applied batches of Mg-feedstock. Furthermore, FVM/FEM-systems have been employed in order to design a simplified geometry of heated forging dies suitable for forging tests. The tests have been carried out by means of a hydraulic press. During the tests their punch velocity has been varied between 1 and 40 mm/s. Hence numerically simulated results could be confirmed by practical tests. Exemplary forgings of a simplified shape were made out of all applied batches of Mg-feedstock. No remarkable failures have been detected.


📜 SIMILAR VOLUMES


Corrosion of Mg alloy AZ91D in the prese
✍ F. Seuss; S. Seuss; M. C. Turhan; B. Fabry; S. Virtanen 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 691 KB

## Abstract Mg and Mg alloys are of interest for biodegradable implants as they readily corrode in biological fluids, and dissolved Mg ions are nontoxic. Even though it is well known that Mg dissolution leads to pH increase in the surroundings, the effect of the corrosion‐induced alkalization on th

The mechanism of deposition of calcium p
✍ J. E. Gray-Munro; M. Strong 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 446 KB

## Abstract In recent years, magnesium alloys have been proposed as a new class of metallic bioabsorbable implant material. Unfortunately, hydrogen gas evolution and an increase in alkalinity are both byproducts of the degradation process. This necessitates the development of magnesium alloys with