Investigation of microstructure, mechanical and wear behaviour of B4C particulate reinforced AZ91 matrix composites by powder metallurgy

Küçük Resim Yok

Tarih

2019

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Natl Inst Science Communication-Niscair

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, AZ91 and AZ91 matrix composites reinforced with three weight fractions (10, 20 and 30 wt. %) of B4C particulates have been produced by powder metallurgy using hot pressing. Microstructure, hardness, density and mechanical properties of the samples are investigated. Microstructure characterization revealed the uniform distribution of particulatesin matrix. The presence of Mg, Mg17Al12 and B4C are verified by SEM and XRD. Wear tests are performed under loads of 5, 10, 20 and 30 N. Wear tests show that wear performance of the composites is improved with increasing particulate content. Observed wear mechanisms are oxidative and abrasive. The addition of B4C particulates led to significant increase in hardness, 0.2% compressive yield strength, ultimate compressive strength and failure strain.

Açıklama

Anahtar Kelimeler

Powder metallurgy, B4C particulates, Wear

Kaynak

Indian Journal of Chemical Technology

WoS Q Değeri

Q4

Scopus Q Değeri

Cilt

26

Sayı

4

Künye