ÖN ALAŞIMLANDIRILMIŞ Ti6Al4V TOZU İLE Ti(CP) TOZUNUN SIKIŞTIRILABİLME ŞARTLARININ ARAŞTIRILMASI

Yıl 2018, , 175 - 181, 30.03.2018

Muqdad Naser M. Al-dulaımı Remzi Varol

https://doi.org/10.21923/jesd.365213

Öz

TM ile
üretilen titanyum ürünleri birçok endüstriyel alanda, tıp alanında ve diğer
sektörlerde kullanılmaktadır. Bu çalışmanın amacı farklı sıkıştırma
basınçlarında titanyum tozuna ilave edilen yağlayıcı (Zn-Stearat) miktarlarının
ham yoğunluğa, ham dayanıma, kalıptan ürünün çıkartılması için gerekli olan
çıkartma kuvvetine, sinterlenmiş yoğunluğa ve diğer mekanik özelliklere
etkisinin araştırılmasının yanı sıra kırık yüzeylerin incelenmesidir. Bu
deneysel çalışmada, titanyum tozuna eklenen ve karıştırılan yağlayıcı
miktarları (0.5%, 0.75%, 1% ve 1.1%) olarak belirlenmiş ve bu oranlarla
karıştırılan titanyum tozları farklı basınçlarda (Ti6Al4V için 650- 900 MPa)
ve[Ti(CP)] için 400-650 MPa) sıkıştırılmıştır. Her iki çeşit Titanyum tozundan
kompaktlar 1250Cᵒ sıcaklıkta argon gazlı atmosferik fırında sinterlenmiştir.
Sinterlenmiş numunelere üç nokta eğme deneyi, darbe deneyi, sertlik deneyi ve
SEM-EDS analizleri yapılmıştır. 

Anahtar Kelimeler

Ti6Al4V, Toz Metalurjisi, Sıkıştırılabilme, Ön Alaşımlanmdırma Toz

INVESTIGATION ON THE COMPACTABLE CONDITIONS OF TI POWDERS PRE-ALLOYED TI6AL4V AND TI(CP)

Öz

The
titanium products produced by powder metallurgy method, a decent position among
the other materials and production methods. The aim of this study is to
investigate the effect of lubrication (Zn-Stearat) which added to the titanium
powder at different compaction pressure, to the green density, green strength,
ejecting force to eject the products from the die, sintered density and others
mechanical properties as well as the metallography for fracture surfaces of
specimens. Then, all results of between two type of titanium (Ti6Al4V and Ti
(CP)) powders are compared. In this experimental study, cold pressing with
single acting press are applied. The amounts of lubrications (Zn-Stearat) are
added and mixed with titanium powder is (0.5%, 0.75%, 1% and 1.1%) and each
ratio are compacted in steel die at different compaction pressure (650- 900 MPa
for Ti6Al4V) and (400-650 MPa for Ti (CP)). Two types of titanium powder
compacts are sintered in 1250Cᵒ in argon gas atmospheric furnace. Three-point
bending test, impact test, hardness test and SEM –EDS analysis were applied to
all specimens. 

Anahtar Kelimeler

Ti6Al4V, Ti (CP), Powder Metallurgy, Compactability, Pre-alloyed powder

Kaynakça

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