Laser surface melting of 10 wt% Mo alloyed hardfacing Stellite 12 plasma transferred arc deposits: Structural evolution and high temperature wear performance

Shaikh Asad Ali Dilawary, Amir Motallebzadeh, Muhammad Afzal, Erdem Atar, Huseyin Cimenoglu*

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21 Atıf (Scopus)

Özet

Laser surface melting (LSM) process has been applied on the plasma transferred arc (PTA) deposited Stellite 12 and 10 wt% Mo alloyed Stellite 12 in this study. Following the LSM process, structural and mechanical property comparison of the LSM'ed surfaces has been made. Hardness of the LSM'ed surfaces was measured as 549 HV and 623 HV for the Stellite 12 and Stellite 12 + 10 wt% Mo deposits, respectively. Despite their different hardness and structural features, the LSM'ed surfaces exhibited similar tribological performance at room temperature (RT), where fatigue wear mechanism operates. However, the wear at 500 °C promotes tribo-oxide layer formation whose composition depended on the alloying with Mo. Thus, addition of 10 wt% Mo into Stellite 12 PTA deposit has remarkably enhanced the high temperature wear performance of the LSM'ed surface as a result of participation of complex oxide (CoMoO4) in tribo-oxide layer.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)404-412
Sayfa sayısı9
DergiOptics and Laser Technology
Hacim101
DOI'lar
Yayın durumuYayınlandı - May 2018

Bibliyografik not

Publisher Copyright:
© 2017 Elsevier Ltd

Finansman

Authors are very grateful for Mr. Ahmet Nazim of Gebze Technical University for his assistance in SEM studies. Special thanks are due to Senmak Co for provision of PTA facility. PhD study grant for ‘Shaikh Asad Ali Dilawary’, by the Higher Education Commission of Pakistan and the experimental research grant provided by Istanbul Technical University [Grant number MDK-2017-40819] are also gratefully acknowledged.

FinansörlerFinansör numarası
Istanbul Teknik ÜniversitesiMDK-2017-40819
Higher Education Commision, Pakistan

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