Stabilization of bcc-born phases in Fe-27Ga by adding in situ neutron diffraction study

被引：16

作者：

Balagurov, A. M. ^{[1
]}

Bobrikov, I. A. ^{[1
]}

Golovin, I. S. ^{[2
]}

Cheverikin, V. V. ^{[2
]}

Golovin, S. A. ^{[3
]}

机构：

[1] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

[2] Natl Univ Sci & Technol MISIS, Leninsky Ave 4, Moscow 119049, Russia

[3] Tula State Univ, Lenin Ave 84, Tula 300012, Russia

来源：

MATERIALS LETTERS | 2016年 / 181卷

关键词：

Fe3Ga based alloy; Phase transitions; Neutron scattering; FE-GA ALLOYS; MAGNETOSTRICTION;

D O I：

10.1016/j.matlet.2016.05.185

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Significant influence of 0.3 at%Tb on phase transitions in the Fe-27.4Ga alloy in the range of 20-850 degrees C is observed by in situ neutron diffraction. The conventional transition sequence at heating D0(3) -> L1(2) -> D0(19) -> B2 -> A2 in binary Fe-27.4Ga is changed for D0(3) -> (B2(similar to 75%)+ L1(2)(similar to 25%))-> (B2(similar to 85%)+ D0(19)(similar to 15%))-> B2 -> A2 transitions in the Tb-containing alloy. At slow cooling (2 K/min) the mixture of D0(3)(90%)+ L1(2)(10%) is recorded in the Tb-containing sample instead of dominating L1(2)(similar to 90%) and very limited amount of D0(19) and A2 phases in the binary Fe-27.4Ga alloy. We conclude that the addition of a small amount of Tb stabilizes bcc-born phases (A2, B2 and D0(3)) and prevents appearance of closed packed (fcc ordered L1(2) and hcp ordered D0(19)) phases. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：67 / 70

页数：4

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