Isothermal effect on internal friction of Ti50Ni50 alloy measured by step cooling method in dynamic mechanical analyzer

被引：9

作者：

Chang, S. H. ^{[1
]}

Wu, S. K. ^{[1
,2
]}

机构：

[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Mech Engn, Taipei 106, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 459卷 / 1-2期

关键词：

shape memory alloys (SMA); internal friction; dynamic mechanical analysis; step cooling method; isothermal time interval;

D O I：

10.1016/j.jallcom.2007.04.260

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The internal friction of TiNi-based SMAs measured by step cooling method in DMA may be misled when the used isothermal time interval t is insufficient. For Ti50Ni50 SMA, the tan delta values of B2 -> R and R -> B 19' internal friction peaks measured by step cooling method are lessening with prolonging the t value. This is because the tan delta value of IFTr still subsists and decreases continuously during the frequency sweep process. The t effect is more significant when the step cooling method is measured at lower frequency. According to the experimental results of Ti50Ni50 SMA, it is acceptable to choose t = 20 min to eliminate most of the influence of IFTr. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：155 / 159

页数：5

共 23 条

[1] STUDY OF THE HCP-FCC PHASE-TRANSITION IN COBALT BY ACOUSTIC MEASUREMENTS [J].

BIDAUX, JE ;

SCHALLER, R ;

BENOIT, W .

ACTA METALLURGICA, 1989, 37 (03) :803-811

[2]

BIDAUX JE, 1985, J PHYS, V46, pC10

[3] Martensitic transitions and mechanical spectroscopy of Ni50.8Ti49.2 alloy containing hydrogen [J].

Biscarini, A ;

Campanella, R ;

Coluzzi, B ;

Mazzolai, G ;

Trotta, L ;

Tuissi, A ;

Mazzolai, FM .

ACTA MATERIALIA, 1999, 47 (18) :4525-4533

[4] Internal friction of R-phase and B19′ martensite in equiatomic TiNi shape memory alloy under isothermal conditions [J].

Chang, S. H. ;

Wu, S. K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 437 (1-2) :120-126

[5] Internal friction of B2→B19′ martensitic transformation of Ti50Ni50 shape memory alloy under isothermal conditions [J].

Chang, S. H. ;

Wu, S. K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 454 :379-383

[6] Damping characteristics of cold-rolled and annealed equiatomic TiNi shape memory alloy [J].

Chang, S. H. ;

Wu, S. K. .

HIGH DAMPING MATERIALS II, 2006, 319 :9-15

[7] Inherent internal friction of B2 → R and R → B19′ martensitic transformations in equiatomic TiNi shape memory alloy [J].

Chang, S. H. ;

Wu, S. K. .

SCRIPTA MATERIALIA, 2006, 55 (04) :311-314

[8] Textures in cold-rolled and annealed Ti50Ni50 shape memory alloy [J].

Chang, SH ;

Wu, SK .

SCRIPTA MATERIALIA, 2004, 50 (07) :937-941

[9] Mechanical spectroscopy and twin boundary properties in a Ni50.8Ti49.2 alloy [J].

Coluzzi, B ;

Biscarini, A ;

Campanella, R ;

Trotta, L ;

Mazzolai, G ;

Tuissi, A ;

Mazzolai, FM .

ACTA MATERIALIA, 1999, 47 (06) :1965-1976

[10] Effect of thermal cycling through the martensitic transition on the internal friction and Young's modulus of a Ni50.8Ti49.2 alloy [J].

Coluzzi, B ;

Biscarini, A ;

Campanella, R ;

Mazzolai, G ;

Trotta, L ;

Mazzolai, FM .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 310 :300-305

← 1 2 3 →