Formation, microstructure and mechanical properties of Al-Fe base quasicrystalline alloys

被引：47

作者：

Kimura, HM ^{[1
]}

Sasamori, K ^{[1
]}

Inoue, A ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 294卷

关键词：

aluminum-base alloy; quasicrystalline particle; powder metallurgy; mechanical property; elevated temperature strength;

D O I：

10.1016/S0921-5093(00)01192-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An icosahedral (I) phase in coexistence with Al-phase was formed in the size fraction range up to 125 mum of atomized Al93Fe3Cr2Ti2 powder. The decomposition temperature of the I-phase is about 790 K. As per energy dispersive X-ray spectroscopy analysis, the constituent composition of the I-phase is Al84.2Fe7.0Cr6.3Ti2.5. It is found that the Al84.2Fe7.0Cr6.3Ti2.5 alloy forms a mostly single I-phase in the melt-spun state. Bulk I-alloys in a rod form were produced by extrusion of the atomized powders at 673 K and an extrusion ratio of 10. The extruded Al93Fe3Cr2Ti2 alloys have good mechanical properties, i.e., sigma (0.2) of 550 MPa, sigma (UTS) of 660 MPa and epsilon (p) Of 4.5% at room temperature and sigma (0.2) of 330 MPa, sigma (UTS) of 350 MPa and epsilon (p) Of 1.5% at 573 K. The I-based Al93Fe3Cr2Ti2 alloy is expected to be useful as a new type of high-elevated temperature strength material. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：168 / 172

页数：5

共 11 条

[1] Amorphous, nanoquasicrystalline and nanocrystalline alloys in Al-based systems [J].

Inoue, A .

PROGRESS IN MATERIALS SCIENCE, 1998, 43 (05) :365-520

[2] Preparation and novel properties of nanocrystalline and nanoquasicrystalline alloys [J].

Inoue, A .

NANOSTRUCTURED MATERIALS, 1995, 6 (1-4) :53-64

[3] High elevated-temperature strength of Al-based nanoquasicrystalline alloys [J].

Inoue, A ;

Kimura, H .

NANOSTRUCTURED MATERIALS, 1999, 11 (02) :221-231

[4] HIGH MECHANICAL STRENGTH OF QUASI-CRYSTALLINE PHASE SURROUNDED BY FCC-AL PHASE IN RAPIDLY SOLIDIFIED AL-MN-CE ALLOYS [J].

INOUE, A ;

WATANABE, M ;

KIMURA, HM ;

TAKAHASHI, F ;

NAGATA, A ;

MASUMOTO, T .

MATERIALS TRANSACTIONS JIM, 1992, 33 (08) :723-729

[5]

Inoue A, 1999, MATER RES SOC SYMP P, V553, P495

[6] FORMATION, THERMAL-STABILITY AND ELECTRICAL-RESISTIVITY OF QUASI-CRYSTALLINE PHASE IN RAPIDLY QUENCHED AL-CR ALLOYS [J].

INOUE, A ;

KIMURA, H ;

MASUMOTO, T .

JOURNAL OF MATERIALS SCIENCE, 1987, 22 (05) :1758-1768

[7] QUASICRYSTALS - A NEW CLASS OF ORDERED STRUCTURES [J].

LEVINE, D ;

STEINHARDT, PJ .

PHYSICAL REVIEW LETTERS, 1984, 53 (26) :2477-2480

[8] METALLIC PHASE WITH LONG-RANGE ORIENTATIONAL ORDER AND NO TRANSLATIONAL SYMMETRY [J].

SHECHTMAN, D ;

BLECH, I ;

GRATIAS, D ;

CAHN, JW .

PHYSICAL REVIEW LETTERS, 1984, 53 (20) :1951-1953

[9]

TAKEUCHI S, 1992, TETSU TO HAGANE, V78, P1517

[10]

TAKEUCHI S, 1998, P 6 INT C QUAS

← 1 2 →