By Colleen Bettles, Matthew Barnett
Wrought magnesium alloys are alloys which were automatically labored after casting. Wrought alloys own larger power and ductility than forged alloys and make allowance the use of magnesium alloys in a much broader diversity of applications. this crucial booklet summarizes the wealth of contemporary learn at the figuring out of process-property relationships in wrought magnesium alloys and the way this knowing can be utilized to strengthen a brand new new release of alloys for high-performance applications. After an introductory evaluate of present advancements in wrought magnesium alloys, half one experiences primary facets of deformation habit. those chapters are the construction blocks for the optimization of processing steps mentioned partially , which explores casting, extrusion, rolling and forging applied sciences. The concluding chapters hide functions of wrought magnesium alloys in car and biomedical engineering.
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Additional info for Advances in wrought magnesium alloys: Fundamentals of processing, properties and applications
It can be observed that there is a close association between some of the recrystallized grains and the stringers (Mg17Sr2, Sr5Si3) (as marked by white frames in Fig. 26a, b). In those areas, the recrystallized grains grow till they impinge upon another row of stringers or newly recrystallized grains. e. a duration that is not sufficiently long to attain a fully recrystallized structure (Fig. 25 Surface texture pole figures of alloys, rolled at 400 °C. 5Sr) after 4 min. annealing at 450 °C. (a) EBSD map on the RD-TD plane.
It is noted that the Mg-1Li alloy that is fully recrystallized (Fig. 11c) exhibits grain growth upon post annealing at 400 °C (Fig. 11d). Pole figures of post-annealed alloys shown in Fig. 12 indicate that the double peaks in the basal poles in the rolled material were replaced by a single peak in the basal poles following annealing at 400 °C. Microstructural changes during annealing suggest that grain growth, rather than primary recrystallization, was responsible for this evolution. 35 Mg-8Li1Al, Mg-8Li-1Zn and Mg-8Li-1Al-1Zn alloys were homogenized at 280 °C for 24 h, extruded with an extrusion speed of 10 mm/s at 280 °C and rolled at 200 °C.
53. 2. 47 recrystallization in the alloys (Fig. 23). 0> fiber texture depending on the extrusion rate, the RE-containing alloys produced weaker recrystallization textures and the formation of a new texture component (Fig. 24), which is similar to the RE component found in Mg-RE alloys. Nd was found to modify the texture to a greater extent than Ce or Y in Mg-Mn alloys. Alloy MN11exhibited a weak and different texture. The grain structures after both slow and fast extrusion are associated with complete recrystallization in this alloy.
Advances in wrought magnesium alloys: Fundamentals of processing, properties and applications by Colleen Bettles, Matthew Barnett