Effects of microstructures and creep conditions on the fractal dimension of grain boundary fracture in high-temperature creep of heat-resistant alloys
Effects of microstructures and creep conditions on the fractal dimension of grain boundary fracture in high-temperature creep of heat-resistant alloys
复制标题
微观组织和蠕变条件对耐热合金高温蠕变晶界断裂分形维数的影响
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
Manabu Tanaka
中科院分区：
文献类型：
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作者：
Manabu Tanaka
使用几种耐热合金，主要是在一个晶界长度和试样尺寸之间的分析尺度范围内的微观结构方面，如晶粒尺寸和晶界配置，和蠕变条件对晶界断裂的分形维数的影响进行了研究。晶界断裂面轮廓的耐热合金表现出分形性质之间的尺度范围内的一个晶界长度和试样尺寸，以及在尺度范围内低于一个晶界长度。随着晶粒尺寸的减小，晶界断裂的分形维数略有增加，锯齿晶界试样的分形维数一般略大于直晶界试样
The effects of microstructural aspects, such as grain size and grain boundary configuration, and creep conditions on the fractal dimension of the grain boundary fracture were examined using several heat-resistant alloys, principally in an analysis scale range between one grain boundary length and specimen size. Grain boundary fracture surface profiles in the heat-resistant alloys exhibited a fractal nature in the scale range between one grain boundary length and specimen size as well as in the scale range below one grain boundary length. The fractal dimension of the grain boundary fracture slightly increased with decreasing grain size and was generally a little larger in the specimens with serrated grain boundaries than in those with straight grain boundaries