Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/658
Title: Properties and Corrosion Resistance of AISI H13 Hot-Work Tool Steel with Borided B4C Powders
Authors: Günen, Ali
Karahan, İsmail Hakkı
Karakaş, Mustafa Serdar
Kurt, Bülent
Kanca, Yusuf
Çay, Vedat Veli
Yıldız, Murat
Keywords: Steel
Boriding
Corrosion
Nacl
Wear Behavior
Heat-Treatment
Microstructure
Layer
Issue Date: 2020
Publisher: KOREAN INST METALS MATERIALS
Abstract: In this study, the surface of AISI H13 steel was borided with powder blends of B4C and NaBF(4)using the powder-pack method at 800, 900 and 1000 degrees C for 2, 4 and 6 h. The structural and mechanical characteristics of the boride layers formed on the surface were characterized using scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometry, 2D surface profilometry, microhardness and electrochemical corrosion (3.5 wt% NaCl) tests. The boride layer exhibited a single phase structure (Fe2B) in samples coated at 800 degrees C and a dual-phase structure (FeB + Fe2B) at higher boriding temperatures (900 and 1000 degrees C). The boride layers were compact and crack-free in all boriding conditions. Depending on boriding parameters, the thickness, hardness and average surface roughness (R-a) of the coatings were found to range between 5.81 and 102.46 mu m, 1635-1915 HV and 0.315-0.650 mu m, respectively. The borided AISI H13 steel displayed up to 33.5 times and 2.4 times higher corrosion resistance than untreated AISI H13 steel and martensitic AISI 431 steel, respectively. This suggests potential use of borided AISI H13 steel in the steam turbines and marine applications as an alternative to the more costly martensitic and duplex stainless steel grades. The corrosion resistance depended on the phase structure (single- or dual-layer), density, thickness and surface roughness of the boride coatings. Graphic
URI: https://doi.org/10.1007/s12540-019-00421-0
https://hdl.handle.net/20.500.13091/658
ISSN: 1598-9623
2005-4149
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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