A STUDY OF ELECTRICAL-RESISTIVITY, INTERNAL-FRICTION AND SHEAR MODULUS ON AN AGED TI49NI51 ALLOY

被引：125

作者：

WU, SK ^{[1
]}

LIN, HC ^{[1
]}

CHOU, TS ^{[1
]}

机构：

[1] CHINA STEEL CORP, STEEL ALUMINUM R&D DEPT, KAOHSIUNG 81233, TAIWAN

来源：

ACTA METALLURGICA ET MATERIALIA | 1990年 / 38卷 / 01期

关键词：

Electric Conductivity - Titanium Metallography--Transformations;

D O I：

10.1016/0956-7151(90)90137-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The 400°C aged Ti49Ni51 alloy can exhibit the transformation sequence of B2 →r premartensite R-phase →r martensite. In the early aging stage, only the premartensitic transformation is observed due to the Ms point being deeply depressed by the coherent stress of Ti11Ni14 precipitates. In the later aging stage, internal friction peaks associated with premartensitic and martensitic transformations are all observed on both heating and cooling. The sharp peaks associated premartensitic transformation on heating is believed to be related to the "bias" effect of the coherent stress induced by the Ti11Ni14 precipitates. The serrations of internal friction appearing significantly in the temperature around -30 to -80°C are found to be caused by the stress induced accomodation of R-phase or martensite variants, and are not associated with the transformation. The Ti11Ni14 precipitates can enhance the amount of martensite formed by unit of temperature or time during the martensitic transformation. © 1990.

引用

页码：95 / 102

页数：8

共 17 条

[11] EFFECT OF HEAT-TREATMENT ON THE ALL-ROUND SHAPE MEMORY EFFECT IN TI-51AT PERCENT NI [J].

NISHIDA, M ;

HONMA, T .

SCRIPTA METALLURGICA, 1984, 18 (11) :1299-1302

[12] ELECTRON-MICROSCOPY STUDIES OF THE MARTENSITIC-TRANSFORMATION IN AN AGED TI-51 AT-PERCENT-NI SHAPE MEMORY ALLOY [J].

NISHIDA, M ;

WAYMAN, CM ;

CHIBA, A .

METALLOGRAPHY, 1988, 21 (03) :275-291

[13] ELECTRON-MICROSCOPY STUDIES OF THE PREMARTENSITIC TRANSFORMATIONS IN AN AGED TI-51 AT-PERCENT-NI SHAPE MEMORY ALLOY [J].

NISHIDA, M ;

WAYMAN, CM .

METALLOGRAPHY, 1988, 21 (03) :255-273

[14]

Saburi T, 1982, P INT C SOL SOL PHAS, P1455

[15] PREMARTENSITIC PHASES OF TI50NI47FE3 [J].

SALAMON, MB ;

MEICHLE, ME ;

WAYMAN, CM .

PHYSICAL REVIEW B, 1985, 31 (11) :7306-7315

[16]

WAYMAN CM, 1985, AIME ANN M

[17]

WU SK, 1989, IN PRESS

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