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塑性变形条件下硬质合金中重位点阵晶界的特征分布
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北京工业大学

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Grain Boundary Character Distributions of Coincidence Site Lattice Boundaries in WC-Co Composites under Plastic Deformation
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Beijing University of Technology

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    摘要:

    通过五参数法,测定了一种塑性变形条件下硬质合金结构中的两类重位点阵晶界,即Σ13a晶界和Σ2晶界,的晶界特征分布。通过与未经过塑性变形的试样进行对比,发现两类重位点阵晶界的数量以及相应惯习面的赋存频率,在塑性变形条件下都有所降低。通过对硬质合金试样结构中的晶界面类型进行精确区分,塑性变形条件下晶界特征分布的演进过程得到解释。

    Abstract:

    Grain boundary character distributions (GBCDs) have been measured for both Σ13a and Σ2 coincidence site lattice (CSL) boundaries in WC-Co composites under plastic deformation condition via five parameter analysis (FPA) method. For the two CSL boundaries, compared to the cases in the undeformed sample, both populations and the habit plane occurrence frequencies of the CSL boundaries decreased in the plastic deformed sample. The interpretation about the evolution of GBCDs during plastic deformation is proposed based on the fine-sorted crystallographic plane categories.

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原效坤,张雪红,邓思旭.塑性变形条件下硬质合金中重位点阵晶界的特征分布[J].稀有金属材料与工程,2019,48(8):2454~2459.[Xiaokun Yuan, Xuehong Zhang, Sixu Deng. Grain Boundary Character Distributions of Coincidence Site Lattice Boundaries in WC-Co Composites under Plastic Deformation[J]. Rare Metal Materials and Engineering,2019,48(8):2454~2459.]
DOI:10.12442/j. issn.1002-185X.20180190

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  • 收稿日期:2018-03-06
  • 最后修改日期:2018-06-02
  • 录用日期:2018-06-27
  • 在线发布日期: 2019-09-05
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