Fracture toughness of China low activation martensitic (CLAM) steel at room temperature

Fracture toughness of China low activation martensitic (CLAM) steel at room temperature
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中国低活化马氏体(CLAM)钢的室温断裂韧性

DOI:
10.1016/j.fusengdes.2014.03.076
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发表时间:
2014-04
影响因子:
1.7
通讯作者:
Siben Jiang
Siben Jiang
中科院分区:
工程技术3区
文献类型:
--
作者:
Kunfeng Li;Shaojun Liu;Qunying Huang;Gang Xu;Siben Jiang

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用紧凑型拉伸试验机测试了中国低活性马氏体钢的室温断裂韧性,结果为417.9 kJ/m2,与同等条件下的断裂韧性JLf-1相近。断口显微组织观察表明,断裂方式为典型的韧性断裂。同时,还利用分维计算了材料的断裂韧性,计算结果为454.6 kJ/m2,与实验结果吻合较好。该方法可以通过对断口的分析来估算材料的断裂韧度。
The fracture toughness (JIC) of China low activation martensitic (CLAM) steel was tested at room temperature through the compact tension specimen, the result is 417.9 kJ/m2, which is similar to the JLF-1 at same experimental conditions. The microstructural observation of the fracture surface shows that the fracture mode is a typical ductile fracture. Meanwhile, the fracture toughness is also calculated on the basis of the fractal dimension and the calculated result is 454.6 kJ/m2, which is consistent well with the experimental result. This method could be used to estimate the fracture toughness of materials by analyzing of the fracture surface.
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