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Ordered Structure, Dislocation, and Grain Boundary Character Distribution and Their Effects on Warm Deformation in Soft‐Magnetic Fe–6.9Si–0.01B Alloy
Steel Research International ( IF 2.2 ) Pub Date : 2020-07-18 , DOI: 10.1002/srin.202000269
Guojun Cai 1 , Yuezhu Wang 1 , Yanru Huang 2 , Raja Devesh Kumar Misra 3
Affiliation  

The ordered structure, dislocation, and grain boundary character distribution (GBCD) in warm‐rolled Fe–6.9Si–0.01B alloy are characterized, and their effects on plastic deformation are investigated. The study reveals that some {110} recrystallized grains preferentially formed at {111} shear bands as the main nucleation sites at lower rolling temperature, whereas more {111} recrystallized grains occur at 680 °C rolling temperature. The content and size of B2 ordered phases increase with increasing deformation temperatures, meanwhile majority of superdislocations are changed into single dislocations, relieving the stress through cross‐slip. The plastic deformability of Fe–6.9Si–0.01B alloy improves by increasing deformation temperature is attributed to a contribution combining decrease in order degree and recrystallization softening with optimization of GBCD.

中文翻译:

Fe-6.9Si-0.01B软磁合金的有序结构,位错和晶界特征分布及其对热变形的影响

表征了热轧Fe–6.9Si–0.01B合金的有序结构,位错和晶界特征分布(GBCD),并研究了它们对塑性变形的影响。研究表明,在较低的轧制温度下,一些{110}再结晶晶粒优先在{111}剪切带上形成,成为主要的形核部位,而在{680}的轧制温度下,更多的{111}再结晶晶粒出现。B2有序相的含量和大小随变形温度的升高而增加,同时大多数超位错变为单位错,从而通过交滑减轻了应力。Fe–6.9Si-0的塑性变形能力。
更新日期:2020-07-18
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