Evaluation of Fracture Strain for Cold Drawn Thin-Walled Steel Tubes via Small Round-Bar Tensile Test

نویسندگان

چکیده

The evaluation of tube burring formability is a crucial task for finding suitable material tube-based automobile parts. local strain at the ductile fracture site (fracture strain) should be evaluated this purpose. Moreover, cold-drawn steel has strong anisotropic shaped microstructure and possibly causes behavior. Based on background, study axial hoop directional strains tubes using small round-bar tensile specimen. burnished surface ratio pierced was also investigated possibility estimation in-line inspection. As result, three are presented with inferior, nearly same, superior compared strains, where exceeding 40% deterioration in direction occurs by combination grain elongation carbide aggregation. scanning electron micrographs suggest that microvoid growth linkage percolated thorough carbides elongated boundaries. For piercing test, 30% resulted 4% decrease surface. This result suggested can detect defects before actual tube-burring process.

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ژورنال

عنوان ژورنال: Metals

سال: 2022

ISSN: ['2075-4701']

DOI: https://doi.org/10.3390/met12050776