Compressive response of Ni45.3Ti34.7Hf15Pd5 and Ni45.3Ti29.7Hf20Pd5 shape-memory alloys

被引：29

作者：

Acar, E. ^{[1
,2
]}

Tobe, H. ^{[1
]}

Kaya, I. ^{[1
,3
]}

Karaca, H. E. ^{[1
]}

Chumlyakov, Y. I. ^{[4
]}

机构：

[1] Univ Kentucky, Dept Mech Engn, Lexington, KY 40506 USA

[2] Erciyes Univ, TR-38039 Kayseri, Turkey

[3] Anadolu Univ, Fac Engn, Dept Mech Engn, TR-26555 Eskisehir, Turkey

[4] Tomsk State Univ, Siberian Phys Tech Inst, Tomsk 634050, Russia

来源：

JOURNAL OF MATERIALS SCIENCE | 2015年 / 50卷 / 04期

关键词：

SINGLE-CRYSTALS; HYSTERESIS; BEHAVIOR; MICROSTRUCTURE; STRENGTH;

D O I：

10.1007/s10853-014-8757-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The shape-memory properties of Ni45.3Ti34.7Hf15Pd5 and Ni45.3Ti29.7Hf20Pd5 polycrystalline alloys were determined through superelasticity and shape-memory tests in compression. It has been revealed that the Ni45.3Ti34.7Hf15Pd5 has a maximum transformation strain of 3.8 % and work output of up to 30 J cm(-3), while the Ni45.3Ti29.7Hf20Pd5 has a maximum transformation strain of 2.6 % and work output of up to 20 J cm(-3) at 700 MPa. Two-way shape-memory strains of 0.6 and 0.85 % were obtained in Ni45.3Ti34.7Hf15Pd5 and Ni45.3Ti29.7Hf20Pd5 alloys, respectively. The Ni45.3Ti34.7Hf15Pd5 showed superelasticity at 90 A degrees C with recoverable strain of 3.1 %, while high hardening of Ni45.3Ti29.7Hf20Pd5 limited its superelastic behavior. Microstructure of the Ni45.3Ti34.7Hf15Pd5 alloy was revealed by transmission electron microscopy, and effects of composition on the lattice parameters of the transforming phases and martensite morphology were discussed.

引用

页码：1924 / 1934

页数：11

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