Experimental study of the mechanics of fracture in WC-Co alloys
Experimental study of the mechanics of fracture in WC-Co alloys
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DOI：
10.1007/bf02647199
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发表时间：
1987-07
期刊：
影响因子：
--
通讯作者：
L. Sigl;Hans Eckart Exner
中科院分区：
文献类型：
--
作者：
L. Sigl;Hans Eckart Exner
在受控条件下，在技术相关成分和微观结构范围内的碳化钨钴合金断裂。稳定和不稳定的裂纹扩展被证明是等效的裂纹几何形状和能量释放率。基于微观观察和使用SEM显微照片的测量，工艺区的性质，塑性变形的最大延伸，裂纹路径的类型，以及这些裂纹路径的面积分数被确定。的结果，这是在部分不同意与早期的工作，提供了定性的理解和定量描述的断裂过程的复合材料相结合的韧性相嵌入在脆性基体的基础。
Tungsten-carbide cobalt alloys in the range of technically relevant compositions an microstructures were fractured under controlled conditions. Stable and unstable crack propagation are shown to be equivalent with respect to crack geometry and energy release rates. Based on microscopic observations and on measurements using SEM micrographs, the nature of the process zone, the maximum extension of plastic deformation, the types of crack paths, and the area fractions of these crack paths are determined. The results, which are in partial disagreement with earlier work, provide the basis for the qualitative understanding and the quantitative description of fracture processes in composites combining a ductile phase embedded in a brittle matrix.