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Article Details

  • Article Code : NWSA-876-562
  • Article Type : Araştırma Makalesi
  • Publication Number : 1A0063
  • Page Number : 35-47
  • Doi : 10.12739/
  • Abstract Reading : 1083
  • Download : 136
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Issue Details

  • Year : 2010
  • Volume : 5
  • Issue : 1
  • Number of Articles Published : 9
  • Published Date : 1.01.2010

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Engineering Sciences

Serial Number : 1A
ISSN No. : 1308-7231
Release Interval (in a Year) : 4 Issues

PLAZMA TRANSFERLİ ARK KAYNAK YÜZEY İŞLEMİYLE AISI 304 PASLANMAZ ÇELİK YÜZEYİNE WC-Ni-B4C KOMPOZİT KAPLAMASININ MİKROYAPISAL KARAKTERİSTİĞİ

Soner BUYTOZ1

Bu çalışmada, AISI 304 paslanmaz çelik yüzeyine B4C-Ni-WC karbür ve element tozlarını plazma transferli ark kaynak kaplama yöntemiyle alaşımlandırılmıştır. Kaplama tabakası; optik mikroskop (OM), taramalı elektron mikroskobu (SEM), X-ışın difraktogramı (XRD) ve X ışını enerji dağılım spektrometresinden (EDS) faydalanılarak incelenmiştir. Optik mikroskop ve mikroyapı incelemeleri neticesinde, kaplama tabakası ile alt tabakanın birbirlerine metalurjik olarak bağlandığı ve yapıda ostenit (), (Cr,W)2B, Fe23(C,B)6, Cr7C3 ile Ni4B3 faz ve karbürleri belirlenmiştir. Kaplama tabakasının adhezyon aşınma direnci, yapıda mevcut karbür ve fazlardan dolayı, alt tabakaya göre oldukça yüksek değerde olduğu tespit edilmiştir.

Keywords
PLAZMA TRANSFERLİ ARK KAPLAMA, MİKROYAPI, KARBÜRLER, ABRAZİF AŞINMA, BOR KARBÜR,

MICROSTRUCTURAL CHARACTERISTIC OF WC-Ni-B4C REINFORCED COMPOSITE COATINGS ON AISI 304 STAINLESS STEEL BY PLASMA TRANSFERRED ARC WELD SURFACING

Soner BUYTOZ1

In this study, B4C-Ni-WC powder was been alloyed on the 304 stainless steel surface by using plasma transfered arc (PTA) weld surfacing process. Alloyed layer and interface were examined with optical microscope (OM), scanning electron microscope (SEM), and X-Ray diffraction (XRD) and energy dispersive spectograph. OM and SEM observations showed that the obtained coating had a smooth and uniform surface, as well as a metallurgical combination with the AISI 304 stainless steel substrate without cracks and pores at the interface. The austenite (), (Cr,W)2B, Fe23(C,B)6, Cr7C3 and Ni4B3 phase and carbides have been determined in the microstructure. The adhesive wear resistance of the coating layer is higher than the AISI 304 stainless steel substrate material due to the hard carbides and phases.

Keywords
Plasma transferred arc coating, Microstructure, Carbides, Abrasive wear, Bor carbide,

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Soner BUYTOZ (1) (Corresponding Author)

bytz_cl[INJ]ed@hotmail.com

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