Parameters optimization of Ti6Al4V alloy welding by pulsed Nd:YAG laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579525" target="_blank" >RIV/68378271:_____/23:00579525 - 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

Parameters optimization of Ti6Al4V alloy welding by pulsed Nd:YAG laser

Popis výsledku v původním jazyce

The butt welds of thin Ti6Al4V alloy sheets using a pulsed Nd:YAG laser were investigated to determine the optimal value of peak power and pulse length for creating sound welds. The width of the weld face and the depth of penetration were found to be proportional to increasing peak power and decreasing pulse length. The weld surfaces were measured using a contact profilometer. The influence of laser pulse overlap on the thermal cycle in representative point and cross-section planes was demonstrated by a numerical model. Repeated melting and heating above the transformation temperature by previous and following pulses probably caused the occurrence of a mixed microstructure of α´martensite and massive α in the fusion zone and near the heat-affected zone. Nanohardness tests on the transverse cross-sections showed that the fusion zone was approximately 50% harder than the base material.

Název v anglickém jazyce

Parameters optimization of Ti6Al4V alloy welding by pulsed Nd:YAG laser

Popis výsledku anglicky

The butt welds of thin Ti6Al4V alloy sheets using a pulsed Nd:YAG laser were investigated to determine the optimal value of peak power and pulse length for creating sound welds. The width of the weld face and the depth of penetration were found to be proportional to increasing peak power and decreasing pulse length. The weld surfaces were measured using a contact profilometer. The influence of laser pulse overlap on the thermal cycle in representative point and cross-section planes was demonstrated by a numerical model. Repeated melting and heating above the transformation temperature by previous and following pulses probably caused the occurrence of a mixed microstructure of α´martensite and massive α in the fusion zone and near the heat-affected zone. Nanohardness tests on the transverse cross-sections showed that the fusion zone was approximately 50% harder than the base material.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LM2023032" target="_blank" >LM2023032: Observatoř Pierra Augera – účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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