非晶合金理想裂纹预制方法及其在小试样$K_{\rm Ic}$测试中的应用 1)
谢怡玲,刘泽(
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A GENERAL METHOD TO INTRODUCE PRE-CRACK IN BULK METALLIC GLASSES FOR PLANE STRAIN FRACTURE TOUGHNESS TEST 1)
Xie Yiling,Liu Ze()
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图2. 利用光学显微镜和扫描电子显微镜对通过热塑性成型制备的含理想裂纹试样进行表征. (a) 理想裂纹的光学显 微镜图;(b) 对理想裂纹尖区域进行局部放大的扫描电子显微镜图
Fig. 2. Characterization of a typical sample after pre-cracking by thermoplastic compression. (a) Optical microscope imaging of the pre-crack; (b) Zoom-in the crack tip region by a SEM
