On the Effect of Heat Treatment on the Magnetic Properties of Iron-Aluminium Alloys. III : The Changes of Electric Resistance and Magnetostriction Due to Water Quenching
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概要
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The effect of water quenching on electric resistance and magnetostriction of iron-aluminium alloys has been measured with the forged specimens, and the relation between the cange of resistance or magnetostriction and the quenching temperature and that between those properties and the concentration have been studied. For the alloys containing comparatively small amount of aluminium, no peculiar point has been found on the curve of ele3tric resistance to quenching temperature. However, in a considerably wide range of aluminium content of more than 8 percent, the curve shows a minimum portion extending over the range of 400゜ to 750゜. And for the alloys in the Fe_3Al superstructure range, the curve shows a typical form of the superstructure of A_3B type. The curve of the resistance to concentration in an annealed state shows a minimum at the composition nearly corresponding to Fe_3Al, while when the alloys were quenched from the temperatures higher than the transformation temperature, the curves show a maximum portion extending over the range of concentration of 11 to 15 percent of aluminium This may be caused by the fact that the structure of the alloys m the range higher than the transformation temperature is constructed with two phases, αandα_2. The magnetostriction of the alloys of the α phase and the Fe_3Al phase decreases at first slowly and then rapidly with an increase of quenching temperatures, and becomes small when the alloys are quenched from the temperatures near 550゜. Namely, it has been found that the magnetostriction decreases generally when the permeability increases.
- 東北大学の論文
著者
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Masumoto Hakaru
The Research Institute For Iron Steel And Other Metals
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Saito Hideo
The Research Institute For Iron Steel And Other Metals
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Saito Hideo
The Resarch Institute For Iron Steel And Other Metals
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