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本文略述了ZL-205合金T5、T6、T7三种状态的断裂韧性试样在电子显微镜下观察到的延伸区特征。测量了三种状态和不同断裂韧性(Klc)值试样的延伸区宽度,探讨了延伸区宽度与断裂韧性参数的关系。
In this paper, the characteristics of elongation zone observed under electron microscope of the fracture toughness specimens of T5, T6 and T7 in ZL-205 alloy are summarized. The width of the extension zone of three kinds of specimens with different fracture toughness (Klc) was measured. The relationship between the width of the extension zone and the fracture toughness parameters was discussed.