Formation and magnetic properties of butterfly-shaped martensite in an Fe-Ni-Cr alloy
Yükleniyor...
Tarih
2006
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The butterfly-shaped martensitic transformation has been examined by means of transmission electron microscope (TEM) and the magnetic properties of the alloy have been studied by using Mossbauer spectroscopy in an Fe-16.24%Ni-0.46%Cr (at.%) alloy. Mossbauer spectroscopy examinations showed that the austenite state is paramagnetic and butterfly martensite is ferromagnetic. The volume fraction changes, the effective hyperfine field of the ferromagnetic martensite phase and isomery shift values have also been determined by Mossbauer spectroscopy. In situ TEM studies were carried out in order to elucidate the nucleation and growth mechanisms of the martensite. The nucleation and growth of martensite is related to the motion of dislocations in austenite and this fact plays an important role in the kinetics of the martensitic transformation. Based on these experimental results, the nucleation and growth mechanisms of martensite crystals are discussed in detail. (c) 2006 Published by Elsevier B.V.
Açıklama
International Conference on Martensitic Transformations (ICOMAT05) -- JUN 13-17, 2005 -- Shanghai, PEOPLES R CHINA
Anahtar Kelimeler
in situ TEM, Mossbauer spectroscopy, ferromagnetic butterfly martensite
Kaynak
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
438
Sayı
Künye
closedAccess
