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A Study on Ultrafine Ferrite Formation During Post Deformation Cooling

机译:后变形冷却过程中超细铁素体形成的研究

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摘要

The grain growth of dynamic strain induced transformation (DSIT) ferrite during post deformation cooling for two prior austenite grain sizes was investigated by hot torsion test. The results showed that the prior austenite grain size affected the distribution of DSIT ferrite nucleation sites and the subsequent coarsening behaviour of the grain boundary (GB) and the intragranular grains (IG) nucleated during post deformation cooling. Moreover, an increase in post deformation cooling rate led to decrease in the coarsening rate and the final ferrite grain size.
机译:通过热扭转试验研究了两种先前奥氏体晶粒尺寸的变形后冷却过程中动态应变诱导转变(DSIT)铁素体的晶粒长大。结果表明,先前的奥氏体晶粒尺寸影响着DSIT铁素体成核位置的分布,以及随后的变形冷却过程中晶界(GB)和晶粒内晶粒(IG)的随后粗化行为。而且,变形后冷却速度的增加导致粗化速度和最终铁素体晶粒尺寸的减小。

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