Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F11%3A00361261" target="_blank" >RIV/68081723:_____/11:00361261 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness

Popis výsledku v původním jazyce

The samples made from the Vanadis 6 PM ledeburitic tool steel were surface machined to different quality and heat treated by standard regime of the processing. Three point bending tests were carried out on processed samples. It was found that the flexural strength decreased with decreasing surface quality. The lowering of flexural strength has been accompanied with the decrease of the plastic component of plastic straining preceeding to fracture initiation (work of fracture) of the material. It indicates that the surface roughness leads to the crack initiation before a larger plastic deformation of the material can be developed. Based on the results it can be suggested that to prevent the cracking of tools in the practice it is essential to make a surfaře machining (grinding, lapping, polishing) to as high quality as possible.

Název v anglickém jazyce

Fracture behaviour of P/M Cr-V ledeburitic steel with different surface roughness

Popis výsledku anglicky

The samples made from the Vanadis 6 PM ledeburitic tool steel were surface machined to different quality and heat treated by standard regime of the processing. Three point bending tests were carried out on processed samples. It was found that the flexural strength decreased with decreasing surface quality. The lowering of flexural strength has been accompanied with the decrease of the plastic component of plastic straining preceeding to fracture initiation (work of fracture) of the material. It indicates that the surface roughness leads to the crack initiation before a larger plastic deformation of the material can be developed. Based on the results it can be suggested that to prevent the cracking of tools in the practice it is essential to make a surfaře machining (grinding, lapping, polishing) to as high quality as possible.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F09%2F1821" target="_blank" >GA101/09/1821: Mechanické a lomové vlastnosti multilamelárních struktur typu keramika/keramika a keramika/kov s gradientními vrstvami</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Materiálové inžinierstvo - Materials Engineering

ISSN

1335-0803

e-ISSN

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Svazek periodika

-

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

8

Strana od-do

36-43

Kód UT WoS článku

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EID výsledku v databázi Scopus

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