CREEP OF MOLYBDENUM DISILICIDE COMPOSITES

被引：73

作者：

SADANANDA, K ^{[1
]}

FENG, CR ^{[1
]}

JONES, H ^{[1
]}

PETROVIC, J ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 155卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(92)90329-Y

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The creep deformation behavior of MoSi2, MoSi2 with SiC reinforcement, MoSi2 and WSi2 alloy, and the alloy with SiC reinforcement was determined under compression in the temperature range 1100-1450-degrees-C. The effects of reinforcement and alloying were evaluated. Existing theories of composite strengthening were examined in relation to the present results. Models based on a creeping matrix with elastically deforming fibers appear to predict the observed behavior better than any other models. Activation energies and volumes were evaluated to identify the creep mechanisms. Based on the stress exponents and the energies, it is concluded that creep progresses with increasing temperature and stress from newtonian viscous flow involving diffusion processes to power-law creep involving dislocation climb.

引用

页码：227 / 239

页数：13

共 31 条

[1]

Aikin R.M., 1991, CERAM ENG SCI P, V12, P1643

[2]

Askill J., 1970, TRACER DIFFUSION DAT, DOI [10.1007/978-1-4684-6075-9, DOI 10.1007/978-1-4684-6075-9]

[3]

BARTLETT RW, 1964, T METALL SOC AIME, V230, P1528

[4]

BOSE S, 1992, MATER SCI ENG A, V155

[5] KINETICS AND MECHANISMS OF HIGH-TEMPERATURE CREEP IN SILICON-CARBIDE .1. REACTION-BONDED [J].

CARTER, CH ;

DAVIS, RF ;

BENTLEY, J .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1984, 67 (06) :409-417

[6] STEADY-STATE POWER-LAW CREEP IN HETEROGENEOUS ALLOYS WITH COARSE MICROSTRUCTURES [J].

CHEN, IW ;

ARGON, AS .

ACTA METALLURGICA, 1979, 27 (05) :785-791

[7] THE DETERMINATION OF THE ELASTIC FIELD OF AN ELLIPSOIDAL INCLUSION, AND RELATED PROBLEMS [J].

ESHELBY, JD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1957, 241 (1226) :376-396

[8]

FLEISCHER RL, 1990, WRDCTR904046 WRIGHT

[9]

Gibbs W., 1987, CERAM ENG SCI P, P645

[10] TENSILE CREEP OF WHISKER-REINFORCED SILICON-NITRIDE [J].

HOCKEY, BJ ;

WIEDERHORN, SM ;

LIU, W ;

BALDONI, JG ;

BULJAN, ST .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (14) :3931-3939

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