Vliv bodových svarů na mechanické vlastnosti vysokopevnostních ocelových plechů

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Spot Welds on Mechanical Performance of High Strength Steel Sheets

Popis výsledku v původním jazyce

High strength steel (HSS) sheets are used in the car industry for the construction of reinforcement parts due to their high strength and ability to absorb plastic deformation, which leads to the better crashworthiness of the car. Mechanical properties ofHSSs are given by their fine microstructure. Nevertheless, it is necessary to join individual parts of the car body. For this purpose spot welding technology is very often used. Disadvantage of this technology is a fact that materials of the welded parts can be affected in the zone of the spot welds by introduced thermal field and grain growth, recrystallization, shrinkage cavities formation, or oxidation can occur. Such defects can deteriorate mechanical properties of the whole structure. It is important to be sure that spot welds do not influence the materials performance beyond a tolerable limit. This research succeeds our previous studies in which fracture and impact toughness of several grades of HSS sheets were evaluated.

Název v anglickém jazyce

Influence of Spot Welds on Mechanical Performance of High Strength Steel Sheets

Popis výsledku anglicky

High strength steel (HSS) sheets are used in the car industry for the construction of reinforcement parts due to their high strength and ability to absorb plastic deformation, which leads to the better crashworthiness of the car. Mechanical properties ofHSSs are given by their fine microstructure. Nevertheless, it is necessary to join individual parts of the car body. For this purpose spot welding technology is very often used. Disadvantage of this technology is a fact that materials of the welded parts can be affected in the zone of the spot welds by introduced thermal field and grain growth, recrystallization, shrinkage cavities formation, or oxidation can occur. Such defects can deteriorate mechanical properties of the whole structure. It is important to be sure that spot welds do not influence the materials performance beyond a tolerable limit. This research succeeds our previous studies in which fracture and impact toughness of several grades of HSS sheets were evaluated.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of Workshop 2008

ISBN

978-80-01-04016-4

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

Czech Technical University in Prague

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

18. 2. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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