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Influence of bar thermal hardening via tempcore method on their properties after stretching

  • Mechanical properties after stretching testings were calcu-lated and experimentally determined via Tempcore method for bar core, bar surface and whole bar cross section. It was displayed on the base of experiments and imitating simulation that deformation in core and surface areas of a bar are equal and therefore influence of structural parameters in the core area is principally decisive for initiating of neck forming in the surface area. The results showed that resistance to destruction of martensite surface layer has rather less effect on bar properties in general in comparison with previous investigations. It is concluded that improvement of core structure quality can help to lower brittleness of the whole bar. It was also proved that used techniques provide good concordance between the obtained results and experimental data. Therefore, the additivity rule for structural components can be used successfully for determination of whole bar parameters, taking into account thickness of surface layer that can be measured easily using hardness sensor. It will simplify practically quality control of products.

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Metadaten
Author:Beatriz Hortigón Fuentes, José María Gallardo Fuentes, Sergio Muñoz Moreno, Paul Gümpel, Joachim Strittmatter
ISSN:0132-0890
ISSN:2414-0104
Parent Title (Russian):Черные металлы : ежемесячный российский металлургический журнал
Document Type:Article
Language:Multiple languages
Year of Publication:2019
Release Date:2023/01/13
Issue:6
First Page:69
Last Page:77
Relevance:Keine peer reviewed Publikation (Wissenschaftlicher Artikel und Aufsatz, Proceeding, Artikel in Tagungsband)
Open Access?:Nein