In situ study of phase transformations in the metastable Fe-42Ga alloy

被引：0
作者：
Vershinina, T. N. [1 ,2 ,3 ]
Sumnikov, S. V.
Yapryntsev, M. N. [4 ]
Balagurov, A. M. [1 ,3 ,5 ]
Palacheva, V. V.
Golovin, I. S.
机构：
[1] Joint Inst Nucl Res, Dubna, Russia
[2] Dubna State Univ, Dubna, Russia
[3] Natl Univ Sci & Technol MISIS, Moscow, Russia
[4] Belgorod State Natl Res Univ, Belgorod, Russia
[5] Lomonosov Moscow State Univ, Moscow, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1002卷
基金：
俄罗斯科学基金会;
关键词：
Fe-Ga alloys; Phase transformation; Neutron diffraction; SYSTEM FE-GA; HEAT-TREATMENT; MAGNETOSTRICTION; CONSTITUTION; DEPENDENCE;
D O I：
10.1016/j.jallcom.2024.175306
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The evolution of the structural phases of the Fe-42.4 at% Ga alloy was studied using neutron diffraction performed with high-intensity continuous scanning in a wide temperature range. The sequence of occurrence of structural states both during heating and subsequent cooling is reported. The structural phases Fe13Ga13, Fe13Ga9, alpha-Fe6Ga5, D03, L12, A2 are present in the alloy and they disappear upon heating above 800 degrees C into the partially ordered B2/A2 phase. The high-temperature Fe13Ga13 intermetallic compound exists in two temperature ranges: 25-580 degrees & Scy; and 770-800 degrees & Scy; during heating and precipitates again during cooling. The persistence of the phase upon cooling down to room temperature is inconsistent with the phase diagram, indicating that the alloy remains in a metastable state after the heating and subsequent cooling. The D03, alpha-Fe6Ga5 and L12 phases are formed during cooling.
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页数：8
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