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金属学报  1977, Vol. 13 Issue (z1): 93-108    
  论文 本期目录 | 过刊浏览 |
定量测定晶粒取向及织构的蚀坑法
罗阳
QUANTITATIVE DETERMINAMON OF GRAIN ORIENTATION AND TEXTURE BY ETCH-FIGURE METHOD
Luo Yang
引用本文:

罗阳. 定量测定晶粒取向及织构的蚀坑法[J]. 金属学报, 1977, 13(z1): 93-108.
. QUANTITATIVE DETERMINAMON OF GRAIN ORIENTATION AND TEXTURE BY ETCH-FIGURE METHOD[J]. Acta Metall Sin, 1977, 13(z1): 93-108.

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摘要: 晶粒取向硅钢的磁性和晶体织构直接相关,因此,在研制过程中,往往需要进行有关晶粒取向和晶体织构的大量检测工作。实践表明,蚀坑金相法是测定晶粒取向极为便捷而有效的方法,其测量精度也可达到实用要求。本文介绍了用蚀坑法观测热轧板织构及二次再结晶晶粒位向。用上述方法,沿热轧板纵断面测定了织构及其在断面不同深度处的分布及变化情况。对于变压器钢的研究者和生产者而言,重要的是了解二次再结晶晶粒取向的散乱程度。文中阐述了试样的制备,并介绍了根据蚀坑几何参数测定晶粒取向的便捷方法。选择了三个角度参数以确定晶粒位向:θ—轧向与[001]在轧面上投影间的夹角;φ—[001]与轧面间的夹角;ω—[110]与轧面间的夹角。导出了蚀刻[100]面系时形成的三角形和矩形蚀坑的几何参数与φ、ω的函数关系,并编成数据表,以便根据蚀坑几何参数确定相应的φ和ω值。根据所得θ,φ和ω值即可绘出反映晶粒取向度的{100}极图。
Abstract:The etch-figure method which is useful for determining the crystal orienta-tions of grain-oriented silicon iron with sufficient accuracy for industrial practicehas been examined. In this paper an attempt has been made to measure theorientations of the secondary recrystallized grains by means of this method, thedistribution and the changes of the textures in the longitudinal section alongcertain depths being observed. The preparation of the specimens has been described and a method of de-termining the grain orientations by using the geometrical parameters of theetch-figures is given. In order to determine the orientations, three angular para-meters are used: angle θ between the rolling direction and the projection of[001] on the surface of sheet; angle φ between [001] and the surface of sheet,and angle ω between [110] and the sheet surface. The geometrical parametersof both triangular and rectangular etch-figures produced by {100} -attack asfunction of φ and ω have been deduced. For practical uses in the orientationdetermination, the relationship between the etch-figure parameters and the cor-responding φ and ω are listed in tables. With known values of θ, φ and ω, the{100} pole figures can be drawn to show the degree of misorientation of thematerial.
    
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