Processing of TiNi from elemental powders by hot isostatic pressing

被引：113

作者：

McNeese, MD ^{[1
]}

Lagoudas, DC ^{[1
]}

Pollock, TC ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Aerosp Engn, College Stn, TX 77843 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 280卷 / 02期

关键词：

pseudoelasticity; microstructure; TiNi;

D O I：

10.1016/S0921-5093(99)00550-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A procedure for producing cylindrical samples of TiNi shape memory alloy was desired in order to be able economically to provide thermomechanical test specimens to support a constitutive and behavioral modeling effort. The initial development and results of such a procedure are presented in this work. Elemental powders were mixed to ratios of 50.0 and 50.6 at.% Ni, packed and sealed into stainless steel containers. hot isotatically pressed (HIPed) at 200 MPa and 900-1050 degrees C, and machined to expose a gauge section of consolidated TiNi material for thermomechanical testing. Some samples of material were used for DSC analysis to determine transformation temperatures as well as for microscopic examination. Effects of HIPing and post-consolidation heat treatments on the material microstructure and transformation behavior were measured via SEM and DSC analyses. Specimens of approx. 99% theoretical density and nearly homogeneous TiNi microstructures were produced. The specimens were mechanically tested in tension and compression and were shown to exhibit moderate degrees of the shape memory effect and pseudoelasticity. Published by Elsevier Science S.A.

引用

页码：334 / 348

页数：15

共 30 条

[1] ENHANCED MECHANICAL-PROPERTIES OF TINI SHAPE-MEMORY FIBER/AL MATRIX COMPOSITE [J].

FURUYA, Y ;

SASAKI, A ;

TAYA, M .

MATERIALS TRANSACTIONS JIM, 1993, 34 (03) :224-227

[2]

HEY JC, 1995, MATER RES SOC SYMP P, V360, P483

[3]

HEY JC, 1994, SPIE, V2189, P71

[4] COMPACTION AND SINTERING PHENOMENA IN TITANIUM NICKEL SHAPE MEMORY ALLOYS [J].

IGHARO, M ;

WOOD, JV .

POWDER METALLURGY, 1985, 28 (03) :131-139

[5]

JACKSON CM, 1972, SPEC PUB NASA SP, V5110

[6] EFFECTS OF COOLING RATE ON THE SHAPE MEMORY EFFECT THERMODYNAMICS OF NITI [J].

JARDINE, AP ;

ASHBEE, KHG ;

BASSETT, MJ .

JOURNAL OF MATERIALS SCIENCE, 1988, 23 (12) :4273-4281

[7]

JOHNSON WA, 1982, J PHYSIQUE, P291

[8]

JOHNSON WA, 1982, J PHYSIQUE S, P285

[9] SHAPE MEMORY CHARACTERISTICS IN POWDER-METALLURGY TINI ALLOYS [J].

KATO, H ;

KOYARI, T ;

MIURA, S ;

ISONISHI, K ;

TOKIZANE, M .

SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (12) :2335-2340

[10] STRESS-STRAIN BEHAVIOR AND SHAPE-MEMORY EFFECT IN POWDER-METALLURGY TINI ALLOYS [J].

KATO, H ;

KOYARI, T ;

TOKIZANE, M ;

MIURA, S .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (04) :1351-1358

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