15-5 PH Çelik Malzemesinin Kriyojenik Talaşlı İmalat Sürecinde Yüzey Bütünlüğü Analizi

Öz

 Havacılık ve savunma sanayilerinde kullanılan birçok parçanın üretiminde talaşlı imalat yöntemi yaygın olarak kullanılmaktadır. Bu yöntem kullanılarak gerçekleştirilen imalat süreçlerinde meydana gelen termal ve mekanik etkiler imal edilen malzemelerde mikroyapısal dönüşümlere sebep olabilmekte olup bu durum nihai ürünün yorulma ömrü, korozyon direnci ve fonksiyonel performansını etkileyebilmektedir. Bu çalışmada 15-5 PH çelik malzemesinin kriyojenik talaşlı imalat sürecinin yüzey bütünlüğü karakteristiklerine etkileri deneysel olarak incelenmiştir. Elde edilen bulgular kuru ve kesme sıvısı kullanılarak yapılan talaş kaldırmadan elde edilen bulgularla karşılaştırılmıştır. Düşük kesme hızlarında kriyojenik soğutma yöntemi ile gerçekleştirilen deneyler neticesinde mikroyapıda plastik deformasyon ve bunun sonucu olarak mikrosertlik artışı meydana gelmiş, kriyojenik koşullar altında kesici takımda meydana gelen lokal kırılmalar diğer kesme yöntemlerine oranla daha pürüzlü bir yüzey oluşumuna neden olmuştur.

Anahtar Kelimeler

• Kriyojenik Talaşlı İmalat,Yüzey Bütünlüğü,Martenzitik Paslanmaz Çelik

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