The efficiency of tumble finishing as a final post-treatment for fatigue enhancement of notched laser powder bed fusion AlSi10Mg

Küçük Resim Yok

Tarih

2023

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Nature Portfolio

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

A hybrid post-treatment combining tumble finishing as a final step after shot peening and heat treatment was developed to alleviate the adverse effects of internal and surface defects on the fatigue performance of laser powder bed fusion AlSi10Mg samples. The effects of each post-treatment were investigated individually and synergistically on microstructure, surface morphology and roughness, hardness, residual stresses, porosity, and rotating bending fatigue behavior of V-notched AlSi10Mg samples. The results reveal that tumble finishing can highly reduce surface roughness by 28 and 32% compared to the as-built and heat-treated states while inducing extra surface layer hardening and compressive residual stresses. The hybrid post-treatment of heat treatment + shot peening + tumble finishing significantly increased the fatigue life of the samples by over 500 times higher compared to the as-built series.

Açıklama

Anahtar Kelimeler

Mechanical-Properties, Surface-Roughness, Stainless-Steel, Alloy, Microstructure, Strength, Behavior, Parts, Dislocations, Resistance

Kaynak

Scientific Reports

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

13

Sayı

1

Künye