FRACTURE-TOUGHNESS OF AL-LI-X ALLOYS AT AMBIENT AND CRYOGENIC TEMPERATURES

被引：34

作者：

JATA, KV ^{[1
]}

STARKE, EA ^{[1
]}

机构：

[1] UNIV VIRGINIA,DEPT MAT SCI,CHARLOTTESVILLE,VA 22901

来源：

SCRIPTA METALLURGICA | 1988年 / 22卷 / 09期

关键词：

ALUMINUM METALLOGRAPHY - Grain Boundaries - CRYOGENICS - METALS TESTING - Fracture;

D O I：

10.1016/S0036-9748(88)80037-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The fracture toughness of 2090 and 9090 alloys increases at liquid nitrogen temperature. This is accompanied by an increase in yield and ultimate tensile stress, strain hardening exponent, and fracture strain. A larger number of delaminations occur at liquid nitrogen temperature. These delaminations cause the specimen to behave as if it were under plane stress. However, the deformation processes, i. e. , less slip localization at liquid nitrogen temperature when compared to intense slip localization at room temperature, still control the fracture process. 9 Refs.

引用

页码：1553 / 1556

页数：4

共 9 条

[1] CRYOGENIC TOUGHNESS OF AL-CU-LI ALLOY AA 2090 [J].

DORWARD, RC .

SCRIPTA METALLURGICA, 1986, 20 (10) :1379-1383

[2] MECHANICAL-BEHAVIOR OF ALUMINUM-LITHIUM ALLOYS AT CRYOGENIC TEMPERATURES [J].

GLAZER, J ;

VERZASCONI, SL ;

SAWTELL, RR ;

MORRIS, JW .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (10) :1695-1701

[3] FATIGUE CRACK-GROWTH AND FRACTURE-TOUGHNESS BEHAVIOR OF AN AL-LI-CU ALLOY [J].

JATA, KV ;

STARKE, EA .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (06) :1011-1026

[4]

NELSON FG, 1971, ASTM STP, V496, P27

[5]

RAO KTV, 1988, SCRIPTA METALL MATER, V22, P93

[6] THE EFFECT OF SLIP DISTRIBUTION ON THE MONOTONIC AND CYCLIC DUCTILITY OF AL-LI BINARY-ALLOYS [J].

SANDERS, TH ;

STARKE, EA .

ACTA METALLURGICA, 1982, 30 (05) :927-939

[7] Microscopic and macroscopic aspects of fracture in lithium-containing aluminum alloys [J].

Suresh, S. ;

Vasudevan, A. K. ;

Tosten, M. ;

Howell, P. R. .

ACTA METALLURGICA, 1987, 35 (01) :25-46

[8] THE EFFECT OF LOW MELTING-POINT IMPURITIES ON THE PROPERTIES OF ALUMINUM-LITHIUM ALLOYS [J].

WEBSTER, D .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (12) :2181-2193

[9]

WEBSTER D, 1986, ALUMINUM LITHIUM ALL, V3, P602

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