Martensitic transformations and mobility of twin boundaries in Ni2MnGa alloys studied by using internal friction

被引：37

作者：

Gavriljuk, VG

Söderberg, O

Bliznuk, VV

Glavatska, NI

Lindroos, VK

机构：

[1] GV Kurdyumov Inst Met Phys, Dept Phys Grounds Design Steels & Alloys, UA-03680 Kiev 142, Ukraine

[2] Helsinki Univ Technol, Lab Phys Met & Mat Sci, FIN-02015 Espoo, Finland

来源：

SCRIPTA MATERIALIA | 2003年 / 49卷 / 08期

关键词：

Ni-Mn-Ga; internal friction; differential scanning calorimetry; phase transformations; martensite;

D O I：

10.1016/S1359-6462(03)00360-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Internal friction (IF) was measured in two non-stoichiometric Ni2MnGa alloys. Several IF peaks attributed to some restructuring of the martensitic lattice were observed below M-s. From the strain dependence of IF, the activation enthalpy for movement of twin boundaries between martensitic domains was estimated to be equal to 0.02-0.04 eV. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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页码：803 / 809

页数：7

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