Anomalous Effect of Pressure on the Curie Temperature in Mechanically Alloyed Fe-Ni Invar

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Acta Metallurgica Sinica (English Letters) ›› 2007, Vol. 20 ›› Issue (3): 205-209 .

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Anomalous Effect of Pressure on the Curie Temperature in Mechanically Alloyed Fe-Ni Invar

X.H. Wei and F. Ono

HuiZhou university

Received:2006-09-21 Revised:2006-11-09 Online:2007-06-25 Published:2009-10-10

Abstract

Abstract:

Measurements of magnetic susceptibility in mechanically alloyed Fe-Ni Invar alloys were taken under pressures up to 7.5GPa. The rate of decrease in the Curie temperature for 700℃ annealed specimen was larger than that annealed at 1000℃. This result can be explained by considering the fact that the width of the concentration fluctuation becomes larger in the specimen annealed at lower temperature.

Key words: invar alloy, Fe-Ni, mechanical alloying, Curie temperature

X.H. Wei , F. Ono. Anomalous Effect of Pressure on the Curie Temperature in Mechanically Alloyed Fe-Ni Invar[J]. Acta Metallurgica Sinica (English Letters), 2007, 20(3): 205-209 .

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Anomalous Effect of Pressure on the Curie Temperature in Mechanically Alloyed Fe-Ni Invar

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