夏比冲击试验
材料科学
母材
焊接
断裂韧性
复合材料
断裂(地质)
韧性
断裂力学
钟摆
冶金
铬
量子力学
物理
作者
Milivoje Jovanović,Ivica Čamagić,Simon Sedmak,Aleksandar Sedmak,Zijah Burzić
出处
期刊:Materials
[MDPI AG]
日期:2022-03-02
卷期号:15 (5): 1854-1854
被引量:7
摘要
This paper presents the analysis of the behavior of welded joints made of 9-12% Cr-Mo steel SA-387 Gr. 91. The successful application of this steel depends not only on the base metal's (BM) properties but even more on heat-affected-zone (HAZ) and weld metal (WM), both at room and at operating temperature. Impact testing of specimens with a notch in BM, HAZ, and WM was performed on a Charpy instrumented pendulum to enable the separation of the total energy in crack-initiation and crack-propagation energy. Fracture toughness was also determined for all three zones, applying standard procedure at both temperatures. Results are analyzed to obtain a deep insight into steel SA 387 Gr. 91's crack resistance properties at room and operating temperatures. Results are also compared with results obtained previously for A-387 Gr. B to assess the effect of an increased content of Chromium.
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