Influence of Fe-addition on Ni-Mn-Ga ferromagnetic shape-memory alloys

Soto-Parra D., Alvarado-Hernandez F., Ochoa-Gamboa R., Flores-Zuñiga H., Rios-Jara D., Moya X., ...Daha Fazla

12th International Conference on Martensitic Transformations, ICOMAT-08, Santa Fe, NM, Amerika Birleşik Devletleri, 29 Haziran - 05 Temmuz 2008, ss.573-576 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Santa Fe, NM
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.573-576
  • Anahtar Kelimeler: Fe-addition, Magnetic shape-memory alloys, Ni-Mn-Ga, Phase stability
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

The effect of Fe-addition on the structural and magnetic properties of Ni-Mn-Ga has been studied by substituting systematically each atomic species by Fe. Transition temperatures (structural and magnetic) and martensitic transition entropy and enthalpy changes have been obtained from magnetic and calorimetric measurements. From these results the influence of Fe-addition on the relative phase stability of the martensitic and intermediate phases has been analyzed. Deviations from the reported scaling of transition temperatures with e/a for Ni-Mn-Ga are obtained in the studied quaternary system.