Cu – ESASLI ŞEKİL HATIRLAMA ALAŞIMLARINDA OKSİDASYON ÖZELLİKLERİNE ALAŞIM ELEMENTLERİNİN ETKİSİ
Yıl 2006,
Cilt: 4 Sayı: 3, 10 - 14, 30.07.2006
Şahide Nevin Balo
,
Mehmet Ceylan
Öz
Dört farklı
kompozisyonlu Cu-esaslı şekil hatırlama alaşımlarının yüksek sıcaklık
oksitlenme özellikleri hava atmosferi altında 150 °C - 900 °C
sıcaklık aralıklarında thermogravimetrik
analiz (TGA) ile incelendi. Isıtma hızı ve alaşımlama elementlerinin
çeşidine bağlı olarak toz numuneler incelendi ve oxsitlenme hızları TGA ile
belirlendi. Sonuçlar işaret edilen alaşımlarda artan Al içeriği ve artan ısıtma
hızına bağlı olarak, oksidasyon hızının arttığını gösterdi.
Kaynakça
- 1. Ashby M. F., and H.jones D.R. 1982 Engineering Materials, An Introduction to their Properties and Applications pp:194-195 Pergamon Press Ltd., Headington Hill Hall,Oxford OX3 0BW,England.
- 2. Brooks C.R. 1990. Heat treatment, Structure and Properties of Nonferrous Alloys, pp 311-320 American Society for Metals Park, Ohio 44073.
- 3. Firstov G.S., Hummbeeck J.V., Koval, Y.N. 2004. High-temperature shape memory alloys Somerecent developments, Materials Science and Engineering A 378 2-10
- 4. Ceylan M., Zengin R. 2000. Shape memory properties and oxidation behaviour of a rapidly liquid quenched Cu-Sn Alloy, Journal of Materials Processing Technology, 97 148-152.
- 5. Lipe T., Moris M.A. 1995. Effect of Thermally Activated Mechanisms on the Martensitic Trans-formation of Modified Cu-Al-Ni Alloys, Acta Metall. Mater. 43 (3), 1293-1303
- 6. Shackelford J.F. 1996. Introduction to Materials Science for Engineers p.541 Fourth Edition. Prentice -Hall,Inc.
- 7. Yinnon H., Uhlman D.R. 1983. Applications of Thermoanlayitical Techniques to the study of Crystallisation Kinetics in Glass-Forming Liquids, PartI: Theory, Journal of Non-Crystalline Solids 54 253-275.
- 8. Zhang X.J., Niu Y., Gesmundo F. 2004. Oxidation of the three-phase Cu-20Ni-30Cr and Cu-20Ni-40Cr alloys at 700-800 oC in 1 atm O2. Corrosion Science 46 2837-2851
- 9. Wang S.Y., Gesmundo F., Wu W.T., Niu Y. 2006. A non-classical type of third-element effect in the oxidation of Cu-xCr-2Al alloys at 1173 K. Scripta Materialia 54 1563-1568
THE EFFECT TO OXIDATION BEHAVIOUR OF ALLOY ELEMENTS IN THE Cu – BASED SHAPE MEMORY ALLOYS
Yıl 2006,
Cilt: 4 Sayı: 3, 10 - 14, 30.07.2006
Şahide Nevin Balo
,
Mehmet Ceylan
Öz
High temperature
oxidation behaviours of with four different composition Cu-based shape memory
alloys have been investigated by thermogravimetric
analysis (TGA) in the temperature range of 150 °C - 900 °C under
air atmosphere. Depending on the heating rate and the alloying elements types,
the weight gains of the powdered samples were investigated and the oxidation
rates have been determined by TGA. The results indicate that increasing of Al
content in the alloys and increasing the heating rate, increase the rate of
oxidation.
Kaynakça
- 1. Ashby M. F., and H.jones D.R. 1982 Engineering Materials, An Introduction to their Properties and Applications pp:194-195 Pergamon Press Ltd., Headington Hill Hall,Oxford OX3 0BW,England.
- 2. Brooks C.R. 1990. Heat treatment, Structure and Properties of Nonferrous Alloys, pp 311-320 American Society for Metals Park, Ohio 44073.
- 3. Firstov G.S., Hummbeeck J.V., Koval, Y.N. 2004. High-temperature shape memory alloys Somerecent developments, Materials Science and Engineering A 378 2-10
- 4. Ceylan M., Zengin R. 2000. Shape memory properties and oxidation behaviour of a rapidly liquid quenched Cu-Sn Alloy, Journal of Materials Processing Technology, 97 148-152.
- 5. Lipe T., Moris M.A. 1995. Effect of Thermally Activated Mechanisms on the Martensitic Trans-formation of Modified Cu-Al-Ni Alloys, Acta Metall. Mater. 43 (3), 1293-1303
- 6. Shackelford J.F. 1996. Introduction to Materials Science for Engineers p.541 Fourth Edition. Prentice -Hall,Inc.
- 7. Yinnon H., Uhlman D.R. 1983. Applications of Thermoanlayitical Techniques to the study of Crystallisation Kinetics in Glass-Forming Liquids, PartI: Theory, Journal of Non-Crystalline Solids 54 253-275.
- 8. Zhang X.J., Niu Y., Gesmundo F. 2004. Oxidation of the three-phase Cu-20Ni-30Cr and Cu-20Ni-40Cr alloys at 700-800 oC in 1 atm O2. Corrosion Science 46 2837-2851
- 9. Wang S.Y., Gesmundo F., Wu W.T., Niu Y. 2006. A non-classical type of third-element effect in the oxidation of Cu-xCr-2Al alloys at 1173 K. Scripta Materialia 54 1563-1568