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Indentation fracture toughness of amorphous steel

机译:非晶钢的压痕断裂韧性

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摘要

Indentation fracture toughness experiments were performed on amorphous steel. Measured toughness values were 3.2 +- 0.3 MPa m~(1/2) for 3-mm-thick specimens and 3.8 +- 0.3 MPa m~(1/2) for 10-mm-thick specimens. Crack geometry was determined to be of the "Palmqvist" or radial configuration. High indentation loads >40 N were necessary for crack formation, and indentation cracks did not form adjacent to every indent, or in a uniform pattern. Possible reasons for crack formation thresholds and geometry are discussed.
机译:在无定形钢上进行压痕断裂韧性实验。测得的韧性值对于3毫米厚的试样为3.2±0.3 MPa m〜(1/2),对于10毫米厚的试样为3.8±0.3 MPa m〜(1/2)。确定裂纹的几何形状为“ Palmqvist”或径向构型。大于40 N的高压痕载荷对于形成裂纹是必不可少的,并且压痕裂纹不会在每个压痕附近形成,也不会以均匀的方式形成。讨论了裂纹形成阈值和几何形状的可能原因。

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