TY  - JOUR
T1  - Yüksek Alaşımlı Beyaz Dökme Demirde Titanyum Katkısının Mikroyapı ve Sertlik Üzerine Etkisi
TT  - The Effect of Titanium on Microstructure and Hardness in High Alloy White Cast Iron
AU  - Koç, Funda Gül
AU  - Çöl, Mustafa
PY  - 2018
DA  - April
JF  - Duzce University Journal of Science and Technology
JO  - DÜBİTED
PB  - Düzce Üniversitesi
WT  - DergiPark
SN  - 2148-2446
SP  - 669
EP  - 675
VL  - 6
IS  - 3
LA  - tr
AB  - Yüksekalaşımlı beyaz dökme demir malzemeler yüksek aşınma dayanımından dolayıçimento, beton ve madencilik sektörlerinde geniş bir kullanım alanına sahiptir.Bu çalışmada, yüksek alaşımlı beyaz dökme demir malzemelerde titanyumkatkısının mikroyapı ve sertlik özelliklerine etkisi incelenmiştir. Bu amaçla,döküm malzemeler % 0.5, % 1 % 1.5 ve % 2oranlarında titanyum içerecek şekilde indüksiyon ocağında ergitilerekalaşımlandırılmış ve metal kalıba dökülerek şekillendirilmiştir. Farklıoranlarda titanyum içeren numunelere 850 ˚C’ de 5 saat süreyle tavlamayapılarak havada sertleştirilmiş ve devamında 250 ˚C’ de 4 saatsüreyle temperleme işlemi uygulanmıştır. Döküm konumundaki ve ısıl işlemuygulanmış numunelerde ışık mikroskobu ve elektron mikroskobu (SEM) ilemikroyapı incelemeleri yapılmıştır.Artan titanyum oranı ve ısıl işlem koşullarına bağlı olarak malzemelerinmikroyapı ve sertlik özelliklerinde meydana gelen değişimler karşılaştırmalıolarak incelenmiştir.
KW  - Dökme Demir
KW  - Titanyum
KW  - Isıl İşlem
KW  - Mikroyapı
KW  - Sertlik
N2  - High alloy white cast iron materials are widely used in cement, concrete and mining industries due to high wear resistance. In this study, the effect of titanium on microstructure and hardness properties in white cast iron materials was investigated. For this purpose, cast materials were alloyed by melting at in induction furnace to include titanium with the rates of % 0, % 0.5, % 0.1, % 1.5, % 2 and were formed by casting into the metal mould. Specimens with different contents of titanium were applied hardening on air after heat treatment at 850 ˚C for 5 hours and tempered at 250 ˚C for 4 hours. Microstructure of cast and heat treated specimens were investigated by using light microscope and scanning electron microscope (SEM). In the microstructure investigations, it was observed that titanium has a significant effect on carbide morphology. It was seen that the hardness of the material with heat treatment increases significantly according to the casting condition. Also it was observed that highest hardness values were obtained with the specimens that include %1 Ti.
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UR  - https://dergipark.org.tr/tr/pub/dubited/issue//365848
L1  - https://dergipark.org.tr/tr/download/article-file/455430
ER  -