Author： Ustinovshchikov Yu. Pushkarev B. Sapegina I.
Publisher： MAIK Nauka/Interperiodica
ISSN： 0020-1685
Source： Inorganic Materials, Vol.42, Iss.3, 2006-03, pp. : 269-274
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Abstract
The structural changes produced in the Fe-40Mn and Fe-20Mn alloys by long-term isothermal heat treatment at temperatures from 600 to 1200°C are studied using x-ray diffraction analysis, transmission electron microscopy, and hardness tests. The results provide evidence, direct for Fe-40Mn and indirect for Fe-20Mn, that the Fe-Mn solid solution in these alloys undergoes phase separation in the temperature range studied. The conclusion is made that the solid-solution region in the Fe-Mn system, as well as in a number of other systems, is in fact a phase-separation region.
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