塑性变形条件下硬质合金中重位点阵晶界的特征分布（英文）  

Grain Boundary Character Distributions of Coincidence Site Lattice Boundaries in WC-Co Composites Under Plastic Deformation

作　　者：原效坤 张雪红[1] 邓思旭[1] Yuan Xiaokun;Zhang Xuehong;Deng Sixu(Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学

出　　处：《稀有金属材料与工程》2019年第8期2454-2459,共6页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51471007)

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。By virtue of five parameter analysis(FPA) method, the grain boundary character distributions(GBCDs) were measured for both Σ13 a and Σ2 coincidence site lattice(CSL) boundaries in WC-Co composites under plastic deformation condition. For the two CSL boundaries, compared to the cases in the undeformed sample, both their populations and their habit plane occurrence frequencies decrease in the plastically deformed sample. The interpretation about the GBCD evolution during plastic deformation is proposed based on the analysis of fine-sorted crystallographic plane categories.

关 键 词：Σ13a晶界 Σ2晶界 硬质合金 电子背散射衍射 五参数法 

分 类 号：TG135.5[一般工业技术—材料科学与工程]