2017
DOI: 10.1177/1687814017707130
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Influence of scratch type on tensile strength in in situ tensile test

Abstract: In this article, the specimen of Q235 (low carbon steel, C 0.22%, Mn: 0.3%-0.8%, Si 0.3%, P 0.045%, S 0.05%) has been tested in in situ tensile tests. Especially, different types of scratches are prefabricated with 1, 2, and 3 mm in depth. In addition, three scratch angles (u = 0°, 45°, and 90°) are adopted to explore the changes of tensile strength. The cross profile of the scratch groove is measured with in situ observation method (Olympus DSX500), which is taken as an important indicator to verify the exper… Show more

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