An investigation of the high-Al part of the Al-Pd-Ru phase diagram at 790-900 °C

被引：14

作者：

Pavlyuchkov, D. ^{[1
,2
]}

Grushko, B. ^{[1
]}

Velikanova, T. Ya. ^{[2
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

[2] IN Frantsevich Inst Problems Mat Sci, UA-03680 Kiev 142, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 469卷 / 1-2期

关键词：

Intermetallics; X-ray diffraction; Phase diagram; QUASI-CRYSTALS; ALLOY SYSTEM; NI-CO; APPROXIMANTS; TRANSITION;

D O I：

10.1016/j.jallcom.2008.01.138

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Partial isothermal sections of the Al-Pd-Ru phase diagram at 790 and 900 degrees C are presented. Complex orthorhombic 8-phases extending from Al(3)Pd up to 15 at.% Ru exhibit structural variants including transient irregular structures. The Al(3)Pd(2) phase dissolves up to 2 at.% Ru, Al(13)Ru(4) <2.5 at.% Pd and Al(2)Ru up to 1 at.% Pd. A stable icosahedral quasicrystalline phase is formed around the Al(71.5)Pd(17)Ru(12.5) composition. At nearby compositions two complex primitive cubic phases with a approximate to 2.0 and approximate to 4.0 nm were observed. These cubic phases exhibit powder X-ray diffraction (XRD) patterns very similar to that of the icosahedral phase. At compositions close to the high-Ru limit of the epsilon-range the electron diffraction patterns of complex orthorhombic structures and ID quasicrystalline structure were revealed. At lower-Al concentrations three ternary cubic phases structurally related to quasicrystals are formed: primitive C (a approximate to 0.75 nm), bcc C(1) and fcc C(2) with a double lattice parameter. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：146 / 151

页数：6

共 14 条

[1] New stable icosahedral phases in Al-Pd-Ru and Al-Pd-Os systems [J].

Asao, T ;

Tamura, R ;

Takeuchi, S .

PHILOSOPHICAL MAGAZINE LETTERS, 2002, 82 (04) :217-223

[2] Reinvestigation of the Al-Mn-Pd alloy system in the vicinity of the T- and R-phases [J].

Balanetskyy, S. ;

Meisterernst, G. ;

Heggen, M. ;

Feuerbacher, M. .

INTERMETALLICS, 2008, 16 (01) :71-87

[3] Orthorhombic ε-phases and transitional structures in Al-Pd-(Fe) [J].

Balanetskyy, S ;

Grushko, B ;

Velikanova, TY .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2004, 219 (09) :548-553

[4] Transition between periodic and quasiperiodic structures in Al-Ni-Co [J].

Grushko, B ;

Holland-Moritz, D ;

Wittmann, R ;

Wilde, G .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 280 (1-2) :215-230

[5] A contribution to the Al-Pd-Mn phase diagram [J].

Grushko, B ;

Yurechko, M ;

Tamura, N .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 290 (1-2) :164-171

[6] Decagonal quasicrystals in Al-Ni-Co:: generality and particulars [J].

Grushko, B ;

Döblinger, M .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2004, 219 (07) :447-455

[7] Formation of quasiperiodic and related periodic intermetallics in alloy systems of aluminum with transition metals [J].

Grushko, Benjamin ;

Velikanova, Tamara .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2007, 31 (02) :217-232

[8] SOME NEW CRYSTALLINE APPROXIMANTS OF AL-PD-MN QUASI-CRYSTALS [J].

LI, HL ;

KUO, KH .

PHILOSOPHICAL MAGAZINE LETTERS, 1994, 70 (01) :55-62

[9] A study of the Al-rich part of the Al-Ru alloy system [J].

Mi, S ;

Balanetskyy, S ;

Grushko, B .

INTERMETALLICS, 2003, 11 (07) :643-649

[10] An investigation of the Al-Pd-Ir phase diagram between 50 and 100 at.% Al [J].

Pavlyuchkov, D. ;

Grushko, B. ;

Velikanova, T. Ya. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 453 (1-2) :191-196

← 1 2 →