在韧窝断裂 (微孔聚集型断裂) 的断口上,覆盖着大量显微微坑,这些微坑(窝坑) 称为 “韧窝”
...韧窝断口;三维形貌;改进立方体覆盖法;分形维数 [gap=1377]Keywords : white light phase-shifting interference;dimple fracture;three-dimensional topography;improved cubic covering method;fractal dimensionzz..
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词定义 中文名称： 韧窝断口 英文名称： toughnest fracture surface 定义： 通过孔洞形核、长大和连接而导致韧性断裂的断口。断口由韧窝(凹坑)构成，某些韧 窝中存在第二相。 应用学科： 材料科学技术（一级学科）；材料科学技术基础（
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其冲击断口微观形貌由室温时的韧窝断口逐渐变为低温下的塑性沿晶断口。
The fracture appearance is dimple at room temperature, it changes into intercrystalline fracture at low-temperature.
结果表明：欠时效态3 J 21合金的室温断口为韧窝断口，而低温断口呈现混合断裂特征。
It was found that the room-temperature fracture of the under-aged 3j21 alloy was of a dimple, while the low-temperature fracture assumed a mixed rupture feature.
峰时效态3 J 21合金的拉伸断口为韧窝断口，断口附近显微组织中滑移线之间的距离大。
The tensile fracture of 3j21 alloy is a dimple fracture at peak-aged state. The distance between the slip lines is larger in the microstructure near the fracture of the alloy at under-aged state.
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