HYDROGEN EMBRITTLEMENT OF FE3AL ALLOYS

被引：33

作者：

CASTAGNA, A

STOLOFF, NS

机构：

[1] Materials Engineering Department, Rensselaer Polytechnic Institute, Troy

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 192卷

关键词：

HYDROGEN; IRON; ALUMINUM; ALLOYS;

D O I：

10.1016/0921-5093(94)03240-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The tensile and fatigue crack growth behavior of two Fe-Al alloys, FA-129 and FAP-Y, are described. FA-129 is an ordered intermetallic while FAP-Y is disordered. The intermetallic is embrittled by both laboratory air and by hydrogen gas, while FAP-Y is embrittled only by hydrogen gas. Fractographic features as well as dislocation substructures for both alloys are described. Oxygen is found to provide the highest ductility for FA-129 over a range of test temperatures. The fatigue crack growth rate of FA-129 is influenced by both the type of long-range order and by the test temperature, with the maximum growth rate noted at room temperature. The mechanism of embrittlement by various environments is discussed.

引用

页码：399 / 406

页数：8

共 18 条

[1]

BUCHANAN RA, 1994, IN PRESS PHYSICAL ME

[2]

BUCHANAN RA, 1992, ORNLSUB8807685CT9102

[3] THE EFFECT OF ORDER ON HYDROGEN EMBRITTLEMENT OF NI3FE [J].

CAMUS, GM ;

STOLOFF, NS ;

DUQUETTE, DJ .

ACTA METALLURGICA, 1989, 37 (05) :1497-1501

[4]

HARDIE D, 1976, EFFECT HYDROGEN BEHA, P251

[5]

KASUL DB, 1991, ENV EFFECTS ADV MATE, P67

[6] HYDROGEN EMBRITTLEMENT OF NI3AL+B [J].

KURUVILLA, AK ;

STOLOFF, NS .

SCRIPTA METALLURGICA, 1985, 19 (01) :83-87

[7] AN ENVIRONMENTAL-EFFECT AS THE MAJOR CAUSE FOR ROOM-TEMPERATURE EMBRITTLEMENT IN FEAL [J].

LIU, CT ;

LEE, EH ;

MCKAMEY, CG .

SCRIPTA METALLURGICA, 1989, 23 (06) :875-880

[8] ENVIRONMENTAL-EFFECTS ON ROOM-TEMPERATURE DUCTILITY AND FRACTURE IN FE3AL [J].

LIU, CT ;

MCKAMEY, CG ;

LEE, EH .

SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (02) :385-389

[9]

LIU CT, 1991, INTERMETALLIC COMPOU, P703

[10]

Louthan M.R., 1974, HYDROGEN METALS, P53

← 1 2 →