Fatigue strength improvement in CuAl8Fe3 bronze via diamond burnishing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F21%3A00353870" target="_blank" >RIV/68407700:21340/21:00353870 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s40430-021-03296-8" target="_blank" >https://doi.org/10.1007/s40430-021-03296-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40430-021-03296-8" target="_blank" >10.1007/s40430-021-03296-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue strength improvement in CuAl8Fe3 bronze via diamond burnishing

Popis výsledku v původním jazyce

The purpose of this study was to increase the fatigue strength of single-phase CuAl8Fe3 aluminum bronze via surface cold work. CuAl8Fe3 bronze possesses a unique combination of mechanical and chemical properties: good strength, excellent electro-chemical and general corrosion resistance, high ductility and wear resistance. However, due to its low aluminum content (below 8.5%), this bronze cannot be heat treated. Thus, the fatigue strength increase was achieved via diamond burnishing (DB). The quantification of the fatigue behavior of this bronze was achieved through rotating bending fatigue tests. The assessment of the fatigue strength improvement (FSI) due to DB was made on the basis of the S-N curve obtained from fatigue tests of samples processed by fine turning. FSI due to single-pass DB fluctuates between 12 and 13%, with the maximum value achieved at the beginning of the megacycle fatigue field. The increase in the number of passes leads to a significant increase in FSI of between 16.6 and 24.4%. Since a direct correlation exists between the surface integrity (SI) and fatigue behavior, the positive effect of DB on FSI is explained by the improved SI-appropriate surface texture, increased micro-hardness, useful compressive residual stresses and grain refinement in the microstructure of the surface and sub-surface layers.

Název v anglickém jazyce

Fatigue strength improvement in CuAl8Fe3 bronze via diamond burnishing

Popis výsledku anglicky

The purpose of this study was to increase the fatigue strength of single-phase CuAl8Fe3 aluminum bronze via surface cold work. CuAl8Fe3 bronze possesses a unique combination of mechanical and chemical properties: good strength, excellent electro-chemical and general corrosion resistance, high ductility and wear resistance. However, due to its low aluminum content (below 8.5%), this bronze cannot be heat treated. Thus, the fatigue strength increase was achieved via diamond burnishing (DB). The quantification of the fatigue behavior of this bronze was achieved through rotating bending fatigue tests. The assessment of the fatigue strength improvement (FSI) due to DB was made on the basis of the S-N curve obtained from fatigue tests of samples processed by fine turning. FSI due to single-pass DB fluctuates between 12 and 13%, with the maximum value achieved at the beginning of the megacycle fatigue field. The increase in the number of passes leads to a significant increase in FSI of between 16.6 and 24.4%. Since a direct correlation exists between the surface integrity (SI) and fatigue behavior, the positive effect of DB on FSI is explained by the improved SI-appropriate surface texture, increased micro-hardness, useful compressive residual stresses and grain refinement in the microstructure of the surface and sub-surface layers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of the Brazilian Society of Mechanical Sciences and Engineering

ISSN

1678-5878

e-ISSN

1806-3691

Svazek periodika

43

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000723667700002

EID výsledku v databázi Scopus

2-s2.0-85120163116