Martensitic transformation in Ni-Mn-Ga alloys

被引：19

作者：

Fritsch, G ^{[1
]}

Kokorin, VV ^{[1
]}

Chernenko, VA ^{[1
]}

Kempf, A ^{[1
]}

Zasimchuk, IK ^{[1
]}

机构：

[1] UKRAINIAN ACAD SCI,INST MET PHYS,UA-252680 KIEV,UKRAINE

来源：

PHASE TRANSITIONS | 1996年 / 57卷 / 04期

关键词：

martensitic transformation; lattice modulation; X-ray diffraction; electron microscopy; Ni-Mn-Ga alloys;

D O I：

10.1080/01411599608208748

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of different compositions in shape memory alloys Ni-Mn-Ga have been studied by electron and low temperature X-ray diffraction as well as by differential scanning calorimetry. It is shown that the cooling-induced martensitic phases are long-periodic ones modulated along the (110) directions by a transverse wave of atomic shifts with 5 and 7 atomic layers periodicity for the alloys studied exhibiting a martensitic transformation at 180 K and 446 K, respectively. The transformation heats appeared to be about 10 times different for both alloys.

引用

页码：233 / 240

页数：8

共 6 条

[1] SOFT MODES IN NI2MNGA SINGLE-CRYSTALS [J].

FRITSCH, G ;

KOKORIN, VV ;

KEMPF, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (08) :L107-L110

[2] STRESS - INDUCED MARTENSITIC TRANSFORMATIONS IN NI2MNGA [J].

KOKORIN, VV ;

MARTYNOV, VV ;

CHERNENKO, VA .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 26 (02) :175-177

[3]

KOKORIN VV, 1989, FIZ MET METALLOVED+, V67, P601

[4]

Kokorin VV., 1989, Phys. Met. Metallogr, V68, P111

[5]

Vasil'ev A. N., 1990, Soviet Physics - JETP, V71, P803

[6]

ZASIMCHUK IK, 1990, FIZ MET METALLOVED+, P110

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