Dynamic Fracture Behavior of the Martensitic High Strength Steel After Spot Welding
Konferenční objektOtevřený přístuppeer-reviewedpostprintDatum publikování
2016
Vedoucí práce
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Název časopisu
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Vydavatel
Elsevier
Abstrakt
Martensitic low alloy high strength steel grade of 22MnB5, used for automotive safety parts constructions, was subject of the experimental analyses of dynamic fracture behavior. The main purpose of the performed analyses was the qualitative and quantitative evaluation of heterogeneities due to the standard spot welding technology. The dynamic resistance of heat affected zones compared to uninfluenced martensitic steel were the subject of suggested methodology for the evaluation of dynamic strength; impact tensile tests were performed after simulation of heat affected zone. Dynamic strength, energy consumption and fracture mode were evaluated at different strain rate. This allows to sketch the influence of the strain rate on the weld joint load capacity. Structural and fractography analyses were focused on an induced degradation process in terms of phase transformation and fracture mode.
Rozsah stran
p. 1156-1160
ISSN
2214-7853
Trvalý odkaz na tento záznam
Projekt
TE01020038/Centrum kompetence drážních vozidel
Zdrojový dokument
Materials Today : Proceedings
Vydavatelská verze
http://www.sciencedirect.com/science/article/pii/S2214785316002194
Přístup k e-verzi
open access
Název akce
32nd DANUBIA ADRIA SYMPOSIUM on Advances in Experimental Mechanics (22.09.2015 - 25.09.2015)
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Klíčová slova
Martensitic steel, heat affected zone, high strain rate, strain rate sensitivity, martenzitická ocel, tepelně ovlivněná oblast, vysoká rychlost defromace, citlivost na rychlost deformace