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首页> 外文期刊>Journal of magnetism and magnetic materials >Influence of intermediate annealing on abnormal Goss grain growth in the rolled columnar-grained Fe-Ga-Al alloys
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Influence of intermediate annealing on abnormal Goss grain growth in the rolled columnar-grained Fe-Ga-Al alloys

机译：中间退火对轧制柱状Fe-Ga-Al合金高斯晶粒生长的影响

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摘要

Magnetostrictive Fe_(82)Ga_(4.5)Al_(13.5) sheets with 0.1 at% NbC were prepared from directional solidified alloys with <0 0 1> preferred orientation. The slabs were hot rolled at 650 °C and warm rolled at 500 °C. Then some warm-rolled sheets were annealed intermediately at 850 °C for 5 min but the others not. After that, all the sheets were cold rolled to a final thickness of ∼0.3 mm. The microstructures, the textures and the distributions of second phase particles in the primary recrystallized samples were investigated. With intermediate annealing, the inhomogeneous microstructure was improved remarkably and strong Goss ({1 1 0}<0 0 1>) and γ-fiber (<1 1 1>/ormal direction [ND]) textures were produced in the primary recrystallized samples. But, an evident disadvantage in size and quantity was observed for Goss grains in the primary recrystallized sample without intermediate annealing. After a final annealing, the final textures and magnetostrictions of samples with and without intermediate annealing were characterized. For samples without intermediate annealing, abnormal growth of {1 1 3} grains occurred and deteriorated the magnetostriction. In contrast, abnormal Goss grain growth occurred completely in samples with intermediate annealing and led to saturation magnetostriction as high as 156 ppm.
机译：用0.1原子％NbC的磁致伸缩Fe_（82）Ga_（4.5）Al_（13.5）片材由定向取向为<0 0 1>的定向凝固合金制备。板坯在650°C进行热轧，在500°C进行热轧。然后将一些热轧板在850°C的温度下进行5分钟的中间退火，而其他则没有。之后，将所有板材冷轧至最终厚度约为0.3毫米。研究了初次重结晶样品中第二相颗粒的微观结构，织构和分布。通过中间退火，显着改善了不均匀的显微组织，并且在初次重结晶中产生了强的戈斯（{1 1 0} <0 0 0 ）和γ纤维（<1 1 1> //法向[ND]）织构。样品。但是，在未经中间退火的情况下，初次重结晶样品中的高斯晶粒在尺寸和数量上都存在明显的缺陷。在最终退火之后，表征具有和不具有中间退火的样品的最终织构和磁致伸缩。对于未经中间退火的样品，发生{1 3}晶粒的异常生长并恶化了磁致伸缩。相比之下，高斯晶粒异常生长在中间退火的样品中完全发生，并导致高达156ppm的饱和磁致伸缩。

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