Sheet texture modification in magnesium-based alloys by selective rare earth alloying

The Influence of Strain Path on Rare Earth Recrystallization Textures in a Magnesium-Zinc-Rare Earth Alloy

“…This unique TD spread texture has been observed in a variety of magnesium-Zn-RE alloys including those containing Ce, Gd, and Nd. [4,[10][11][12][13] Similar textures have been observed in alloys which contain Ca rather than RE. [10] In the as-rolled condition (hot rolling) such materials often show a spread in basal poles toward the TD, even if a split toward the RD is retained.…”

“…It is interesting to compare these results with previous studies of recrystallization in hot rolled Mg-Zn-RE(Ca) alloys. [4,[10][11][12][13] These studies have also emphasized the importance of recrystallization in developing the Zn-RE texture. They have also shown that in the early stages of recrystallization, there is no strong preference for grains split or spread toward the TD (the Zn-RE texture), and this only emerges gradually as the recrystallized fraction increases.…”

“…[10] In the as-rolled condition (hot rolling) such materials often show a spread in basal poles toward the TD, even if a split toward the RD is retained. [4,12,13] The pronounced spread and split toward the TD emerges during recrystallization. These alloys have attracted considerable interest because the textures produced give greatly improved formability over conventional (non-RE) Mg alloy and binary Mg-RE sheet.…”

“…[15] The importance of recrystallization (after warm rolling) in producing the characteristic TD spread in Mg-Zn-(Ca,RE) rolled sheet has been noted in several studies. [4,10,12,13] It has been observed that during recovery and recrystallization, TD-oriented grains appear more resistant to recrystallization, whereas those with basal poles spread (or split) toward the rolling direction (RD) are consumed, leading to dominance of the TD spread grains. The TD spread grains are seen to emerge from shear bands in the material.…”

Microstructure and Mechanical Properties of Severely Deformed Mg-4.5Al-1.0Zn Alloy Processed by Asymmetric Rolling on Ingot and Twin Roll Cast Strip

“…Some methods are effective to improve the strength and formability of Mg alloys, such as grain refinement [4][5][6][7][8] , texture weakening 6,7 , chemical modification 9 , rapid solidification 10 , and etc. Twin roll casting (TRC), which combines continuous casting and direct hot rolling into a single step, has an advantage of one-step processing for flat rolled products.…”