Effects of wire-electro discharge machining process on surface integrity of WC-10Co alloy

Erdem Sireli*, Nilufer Orhon, Guldem Kartal Sireli

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

9 Atıf (Scopus)

Özet

In this study, the effects of heat affected zone generated by wire electro discharge machining (w-EDM) process on the surface integrity of a K15 grade hard metal before and after TiN coating application via chemical vapour deposition (CVD) was investigated. It was observed that applying dry blasting (DB) on w-EDM'ed surfaces is a very efficient way to remove heat affected zone, namely recast layer. TiN layers deposited on w-EDM'ed surfaces showed a great diversity in their morphologies depending on the w-EDM process parameters and exhibited irregularities whereas the ones coated on dry blasted (DB'ed) surfaces constituted much finer mixture of nodular, star shaped and lenticular crystals. Adhesion of TiN layers on the DB'ed hard metal samples was better compared to the ones deposited directly on w-EDM'ed samples with a thick heat affected zone on their surfaces. Friction and wear properties of the TiN layer formed on DB'ed surface against alumina ball were also superior which were also in good agreement with its higher adhesion strength and distinctive morphology.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)190-199
Sayfa sayısı10
DergiInternational Journal of Refractory Metals and Hard Materials
Hacim64
DOI'lar
Yayın durumuYayınlandı - 1 Nis 2017

Bibliyografik not

Publisher Copyright:
© 2016 Elsevier Ltd

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