低碳微合金船用钢S460MLO裂纹打开试验中ctod试验后的解理破坏特征

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metallurgist Pub Date : 2024-12-17 DOI:10.1007/s11015-024-01821-3

E. A. Goli-Oglu, A. N. Filatov

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引用次数: 0

摘要

利用23 mm厚厚钢板工业批量经热轧和焊后热处理的试验结果，分析了断裂韧性CTOD（裂纹尖端张开位移）试验中试样断裂内疲劳裂纹形成的特征。对断裂形成的性质和疲劳裂纹扩展机制进行了目视、显微组织和断口学研究。描述了缺口开口位移的载荷-位移图中潜在“弹出”效应的可能原因，以及它对测试结果解释的潜在不利影响。

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Features of failure with cleavage after ctod tests of low-carbon microalloyed marine steel S460MLO during crack opening tests

Using results of testing industrial batches of 23 mm thick steel heavy plates after thermomechanical rolling and subsequent post-welding heat treatment, features are analyzed for fatigue crack formation within a specimen fracture during CTOD (Crack Tip Opening Displacement) testing for fracture toughness. Visual, microstructural, and fractographic studies are conducted on the nature of fracture formation and fatigue crack propagation mechanisms. Probable causes of a potential “pop-in” effect on load-displacement diagrams of notch opening displacement are described, as well as its potentially unfavourable effect on test result interpretation.

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).