Single toroidal roller burnishing of 2024-T3 Al alloy implemented as mixed burnishing process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00345004" target="_blank" >RIV/68407700:21340/20:00345004 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00170-020-06350-2" target="_blank" >https://doi.org/10.1007/s00170-020-06350-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00170-020-06350-2" target="_blank" >10.1007/s00170-020-06350-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single toroidal roller burnishing of 2024-T3 Al alloy implemented as mixed burnishing process

Popis výsledku v původním jazyce

Based on a comprehensive experimental study, single toroidal roller burnishing (STRB) of the 2024-T3 Al alloy can be successfully implemented as a mixed burnishing process. Optimum values of various governing factors provided minimum roughness and significant enhancement of the fatigue life of the treated specimens. With a planned experiment, regression analysis, and optimization procedure based on a genetic algorithm, the optimum factor values were established under a minimum roughness criterion. The derived model predicted a minimum roughness R-a = 0.074 mu m. The experiment with optimal process parameters provided an average roughness (R-a) of 0.01 mu m. STRB under these optimal conditions yields a relatively homogeneous surface in terms of microhardness with a surface microhardness increase coefficient of 37.6%. The parametric study of the residual surface hoop and axial stresses conducted via X-ray stress analysis shows that the STRB with near-optimal process parameters introduces significant residual stresses. STRB of the 2024-T3 Al alloy, implemented as a mixed burnishing process, produces a mirror-finish surface, improves the fatigue life by more than 2000 times, and increases the conventional fatigue limit by 35.1% compared to the reference condition.

Název v anglickém jazyce

Single toroidal roller burnishing of 2024-T3 Al alloy implemented as mixed burnishing process

Popis výsledku anglicky

Based on a comprehensive experimental study, single toroidal roller burnishing (STRB) of the 2024-T3 Al alloy can be successfully implemented as a mixed burnishing process. Optimum values of various governing factors provided minimum roughness and significant enhancement of the fatigue life of the treated specimens. With a planned experiment, regression analysis, and optimization procedure based on a genetic algorithm, the optimum factor values were established under a minimum roughness criterion. The derived model predicted a minimum roughness R-a = 0.074 mu m. The experiment with optimal process parameters provided an average roughness (R-a) of 0.01 mu m. STRB under these optimal conditions yields a relatively homogeneous surface in terms of microhardness with a surface microhardness increase coefficient of 37.6%. The parametric study of the residual surface hoop and axial stresses conducted via X-ray stress analysis shows that the STRB with near-optimal process parameters introduces significant residual stresses. STRB of the 2024-T3 Al alloy, implemented as a mixed burnishing process, produces a mirror-finish surface, improves the fatigue life by more than 2000 times, and increases the conventional fatigue limit by 35.1% compared to the reference condition.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

The International Journal of Advanced Manufacturing Technology

ISSN

0268-3768

e-ISSN

1433-3015

Svazek periodika

111

Číslo periodika v rámci svazku

11-12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

3559-3570

Kód UT WoS článku

000589492800001

EID výsledku v databázi Scopus

2-s2.0-85095981862