DECAGONAL AND DECAGONAL APPROXIMANT FORMATION AS A FUNCTION OF COMPOSITION IN TERNARY AL-CO-CU ALLOYS

被引：27

作者：

DAULTON, TL ^{[1
]}

KELTON, KF ^{[1
]}

SONG, S ^{[1
]}

RYBA, ER ^{[1
]}

机构：

[1] PENN STATE UNIV,DEPT MAT SCI & ENGN,UNIV PK,PA 16802

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1992年 / 65卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/09500839208215148

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

As-cast alloy ingots of nominal compositions Al65Co20Cu15, Al60Co20Cu20, Al65Co15Cu20 and Al70Co15Cu15 were studied with transmission electron microscopy and energy-dispersive X-ray spectroscopy. A compositional variation among the grains, in each alloy, allowed an examination of phase formation as a function of the ternary composition near the nominal compositions. Alloys of composition Al65Co20Cu15, often taken as a stable decagonal phase, instead form a large (about 100 angstrom) unit-cell crystal phase that approximates the decagonal phase. No decagonal phase forms near this composition. True decagonal phase formation is only observed in a narrow phase field centred near Al65Co15Cu20.

引用

页码：55 / 65

页数：11

共 20 条

[1] THE STRUCTURE OF FEAL3 .2.
BLACK, PJ
[J]. ACTA CRYSTALLOGRAPHICA, 1955, 8 (03): : 175 - 182
[2] HIGH-RESOLUTION ELECTRON-MICROSCOPY STUDY AND STRUCTURE MODELING OF THE STABLE DECAGONAL AL-CU-CO QUASI-CRYSTAL
CHEN, H
BURKOV, SE
HE, Y
POON, SJ
SHIFLET, GJ
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (01) : 72 - 75
[3] DECAGONAL APPROXIMATE PHASES IN AL-CO-CU ALLOYS
DAULTON, TL
KELTON, KF
[J]. PHILOSOPHICAL MAGAZINE LETTERS, 1991, 63 (05) : 257 - 265
[4] DAULTON TL, 1991, UNPUB PHIL MAG
[5] DECAGONAL QUASICRYSTALS WITH DIFFERENT PERIODICITIES ALONG THE TENFOLD AXIS IN RAPIDLY SOLIDIFIED AL65CU20MN15, AL65CU20FE15, AL65CU20CO15 OR AL65CU20NI15
HE, LX
WU, YK
KUO, KH
[J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (12) : 1284 - 1286
[6] ONE-DIMENSIONAL QUASICRYSTAL IN RAPIDLY SOLIDIFIED ALLOYS
HE, LX
LI, XZ
ZHANG, Z
KUO, KH
[J]. PHYSICAL REVIEW LETTERS, 1988, 61 (09) : 1116 - 1118
[7] STABLE AL-CU-CO DECAGONAL QUASI-CRYSTALS WITH DECAPRISMATIC SOLIDIFICATION MORPHOLOGY
HE, LX
WU, YK
MENG, XM
KUO, KH
[J]. PHILOSOPHICAL MAGAZINE LETTERS, 1990, 61 (01) : 15 - 19
[8] STABILITY INVESTIGATION OF A DECAGONAL AL-CU-CO QUASI-CRYSTAL
HE, Y
CHEN, H
MENG, XF
POON, SJ
SHIFLET, GJ
[J]. PHILOSOPHICAL MAGAZINE LETTERS, 1991, 63 (04) : 211 - 216
[9] HIRAGA K, 1990, UNPUB JAP J APPL PHY
[10] STRUCTURE OF CO4AL13
HUDD, RC
TAYLOR, WH
[J]. ACTA CRYSTALLOGRAPHICA, 1962, 15 (MAY): : 441 - &

← 1 2 →