Title of article
Effect of ball milling and post-annealing on magnetic properties of Ni49.8Mn28.5Ga21.7 alloy powders
Author/Authors
Tian، نويسنده , , B. and Chen، نويسنده , , F. and Liu، نويسنده , , Y. and Zheng، نويسنده , , Y.F.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
6
From page
1279
To page
1284
Abstract
The transformation and magnetic properties of Ni49.8Mn28.5Ga21.7 powders produced by ball milling and post-milling annealing were investigated in this study. It was found that ball milling suppresses both the Curie transition and the Heusler ↔ tetragonal martensitic phase transformation of the alloy. Ball milling also severely weakens the magnetization of the alloy. Annealing at elevated temperatures is effective in restoring the ferromagnetism and the martensitic transformation of the alloy. The suppression of the Curie transition is attributed to atomic disordering caused by ball milling. The suppression of the martensitic transformation is attributed to severe structural deformation as well as atomic disordering induced by the ball milling.
Keywords
A. Intermetallics , miscellaneous , B. Martensitic transformations , C. Mechanical alloying and milling , B. Magnetic properties , C. Heat treatment
Journal title
Intermetallics
Serial Year
2008
Journal title
Intermetallics
Record number
1504341
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