SPID-Induced nanocrystallization of shape memory Ni2MnGa-based and NiTi-based alloys quenched from liquid state

被引：10

作者：

Pushin, VG

Korolev, AV

Kourov, NI

Gunderov, DV

Valiev, RZ

Koledov, VV

Shavrov, VG

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

[2] Ufa State Aviat Tech Univ, Inst Adv Mat, Ufa 450000, Russia

[3] Russian Acad Sci, Inst Radioengn & Elect, Moscow 125009, Russia

来源：

NANOMATERIALS BY SEVERE PLASTIC DEFORMATION | 2006年 / 503-504卷

关键词：

nanocrystallization of melt-spun alloys; severe plastic deformation; Ti-Ni-Cu and NiMn-Ga based alloys; martensitic transformation; shape memory;

D O I：

10.4028/www.scientific.net/MSF.503-504.545

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper describes the influence of severe plastic deformation (SPD) on the structure, phase transformations, and physical properties of melt-spun Ni2MnGa-based and NiTi-based shape memory alloys. It was found that the SPD by high pressure torsion (HPT) at room temperature can be effectively used for the synthesis of bulk nanostructured states in these initially amorphized or submicro-grained alloys obtained by melt-spinning method in the form of a ribbon. The subsequent low-temperature annealing of HPT-processed alloys leads to formation of homogeneous ultrafine nano-grained structure. This is connected with a very high degree and high homogeneity of deformation at SPD, in the whole volume of deformed sample.

引用

页码：545 / 550

页数：6

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