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Thermal stability of CK60 steel Nano-Crystallized by drilling method


Mohd Tahir, Suraya and Shohreh, Nosrati and Mohamed Ariff, Azmah Hanim and Hashim, Mansor (2014) Thermal stability of CK60 steel Nano-Crystallized by drilling method. Applied Mechanics and Materials, 564. pp. 461-466. ISSN 1660-9336; ESSN: 1662-7482


In present study drilling as a new Surface Sever Plastic Deformation technique (SSPD) has been applied to commercial CK60 steel plate to create a nanoCrystalline (NC) structured layer.The CK60 steel plate with tempered martensitic crystalline structure has been drilledusing hard titanium coated drilling bit under 20 m/min cutting speed. The formed surface nanocrystalline (NC) layers characterized by using field emission scanning electron microscope (FESEM) and microhardness tests. The results showed that the hardness of formed NC layer with almost 50nm grain sizes was more than twice of the martensitic base metal hardness. The thermal stability of NC layer has been studied in the range of 673 to 923K and the results showed that created fine grain structurehad higher thermal stabilitycompared to CK60 steel samples with coarse granular crystalline structure. The microhardness of NC layers reduced from 9.8 to 9.1 GPa after 1 hour tempering at923K.

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Official URL or Download Paper: https://www.scientific.net/AMM.564.461

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Advanced Technology
DOI Number: https://doi.org/10.4028/www.scientific.net/AMM.564.461
Publisher: Trans Tech Publications
Keywords: CK60 steel; Drilling; Nanocrystallization; Single Source of Product Data (SSPD); Thermal stability
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 23 Jan 2018 02:37
Last Modified: 23 Jan 2018 02:37
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/AMM.564.461
URI: http://psasir.upm.edu.my/id/eprint/35841
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