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Synopsis : Formation behavior of recrystallization texture of ceramic particle dispersed ferrite steel bars has been studied in order to achieve high Young's modulus. The ferrite steel bars containing high amounts of ferrite stabilizing elements and small amount of fine Y2O3 particles, which were prepared by mechanical alloying and subsequent hot-extrusion, exhibits considerably high recrystallization temperatures. By the recrystallization at temperatures around 1625K, extremely strong <111> texture is formed. As a result, the Young's modulus in the extrusion direction reaches 282GPa, which is just below the theoretical value of 284GPa. The recrystallization temperature to achieve strong <111> texture depends considerably on the hot-extrusion conditions and amount of ceramic particles. Another texture formation such as <311> by the annealing at higher temperatures will also be discussed.

Recrystallization Texture and Young's Modulus of Ceramic Particle Dispersed Ferrite Steel Bars