Dursun ÖZYÜREK, İjlal ŞİMŞEK, Öznur DİNCEL, Doğan ŞİMŞEK

Toz Metalürjisi Yöntemiyle Üretilen 17-4 PH Paslanmaz Çeliklerde Mo Miktarının Korozyon Davranışlarına Etkisi

Bu çalışmada, toz metalürjisi yöntemi ile farklı oranlarda molibden ilave edilerek üretilen 17-4 PH paslanmaz çelik alaşımların mikro yapı ve korozyon davranışları incelenmiştir. Hazırlanan alaşım tozlar soğuk preslenerek (800 MPa) ham kompaktlar üretilmiştir. Üretilen ham kompaktlar 10-6 milibar vakumda 1300 °C’de 1 saat sinterlenerek, fırın ortamında oda sıcaklığına soğutulmuştur. Üretilen numuneler taramalı elektron mikroskobu (SEM+EDS), X-ışını kırınımı (XRD), yoğunluk ve sertlik ölçümleri ile incelenmiştir. Yapılan çalışmalar sonucunda, 17-4 PH paslanmaz çeliğin yoğunluklarının artan Mo miktarı ile birlikte arttığı, sertliklerinin ise azaldığı belirlenmiştir.0000-0001-6542-8567

Anahtar Kelimeler:

17-4 PH alaşımları, molibden, toz metalürjisi, mikro yapı, korozyon

Effect of Mo Amount on Corrosion Behavior of 17-4 PH Stainless Steels Produced by Powder Metallurgy Method

In this study, corrosion behaviour of 17-4 PH stainless steel alloys was investigated which were produced by powder metallurgy method by adding molybdenum at different amounts. Prepared alloy powders were cold pressing (800 MPa) to produce green compacts. Produced green compacts were sintered in 10–6 mbar vacuum at 1300 °C for 1 h and cooled down to room temperature in the furnace. Sintered components were examined by scanning electron microscopy (SEM + EDS), X-ray diffraction (XRD), and density and hardness measurements. As a result of the studies, it was determined that density of 17-4 PH stainless steels increased with increasing Mo amount and the hardness decreased with the addition of amount of Mo.

Keywords:

17-4 PH alloys, molybdenum, powder metallurgy,

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