The Effect of Powder Particle Size on Mechanical and Fracture Properties of Cold Sprayed Al

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00378484" target="_blank" >RIV/68407700:21220/24:00378484 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/24:00378484

Výsledek na webu

<a href="https://doi.org/10.31399/asm.cp.itsc2024p0514" target="_blank" >https://doi.org/10.31399/asm.cp.itsc2024p0514</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31399/asm.cp.itsc2024p0514" target="_blank" >10.31399/asm.cp.itsc2024p0514</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Effect of Powder Particle Size on Mechanical and Fracture Properties of Cold Sprayed Al

Popis výsledku v původním jazyce

Thick deposits were produced from pure Al powder of three different sieve sizes using cold spraying at the same process parameters. The in-plane mechanical and fracture properties of the deposits were investigated using bending of small specimens in four specimen orientations. It was shown that increasing the Al particle size by approximately 50% and 100% leads to small, but statistically significant differences of yield strength. Further, the increase in the powder particle size led to higher fracture toughness KIC but lower fatigue crack growth threshold ΔKthr. This can be attributed to two different fracture mechanisms in the cold sprayed deposits. A trans-particular fracture in the near-threshold fatigue regime is controlled by the microstructure and work hardening of the particles. At higher cyclic loads and in quasi-static regime, the particle decohesion and the resulting crack path determine the fracture behavior instead. However, the observed effect of particle size was rather small, much smaller than the effect of spray process parameters observed in the previous research.

Název v anglickém jazyce

The Effect of Powder Particle Size on Mechanical and Fracture Properties of Cold Sprayed Al

Popis výsledku anglicky

Thick deposits were produced from pure Al powder of three different sieve sizes using cold spraying at the same process parameters. The in-plane mechanical and fracture properties of the deposits were investigated using bending of small specimens in four specimen orientations. It was shown that increasing the Al particle size by approximately 50% and 100% leads to small, but statistically significant differences of yield strength. Further, the increase in the powder particle size led to higher fracture toughness KIC but lower fatigue crack growth threshold ΔKthr. This can be attributed to two different fracture mechanisms in the cold sprayed deposits. A trans-particular fracture in the near-threshold fatigue regime is controlled by the microstructure and work hardening of the particles. At higher cyclic loads and in quasi-static regime, the particle decohesion and the resulting crack path determine the fracture behavior instead. However, the observed effect of particle size was rather small, much smaller than the effect of spray process parameters observed in the previous research.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Thermal Spray 2024: Proceedings from the International Thermal Spray Conference

ISBN

9798331305437

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

514-519

Název nakladatele

DVS Media GmbH

Místo vydání

Düsseldorf

Místo konání akce

Milan

Datum konání akce

29. 4. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—