Synergetic effect of Re and Ru on γ/γ′ interface strengthening of Ni-base single crystal superalloys

被引：33

作者：

Chen, K ^{[1
]}

Zhao, LR

Tse, JS

机构：

[1] Natl Res Council Canada, Struct Mat & Prop Lab, Inst Aerosp Res, Ottawa, ON K1A 0R6, Canada

[2] Natl Res Council Canada, Theory & Computat Grp, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 360卷 / 1-2期

关键词：

first principles calculations; synergetic; interface; strengthening; superalloys;

D O I：

10.1016/S0921-5093(03)00464-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The synergetic effect of Re and Ru on gamma/gamma' interface strengthening of Ni-base SC superalloys has been investigated by performing DMol3 calculations. Results show that the synergetic effect of Re and Ru on the interface strengthening is better than that achieved by the individual Re or Ru due to Re-d/Ru-d, Re-d/Ni-d and Ru-d/Ni-d hybridizations. The electronic mechanism underlying the synergetic effect of Re and Ru on gamma/gamma' interface strengthening is related to the charge transfer of electrons and the enhancement of d-bonding hybridization among Re-Ru, Re-Ni and Ru-Ni atoms. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：197 / 201

页数：5

共 21 条

[1]

Argence D, 2000, SUPERALLOYS 2000, P829

[2] AN ATOM PROBE INVESTIGATION OF THE ROLE OF RHENIUM ADDITIONS IN IMPROVING CREEP RESISTANCE OF NI-BASE SUPERALLOYS [J].

BLAVETTE, D ;

CARON, P ;

KHAN, T .

SCRIPTA METALLURGICA, 1986, 20 (10) :1395-1400

[3]

BRYSKIN BD, 1997, RHENIUM RHENIUM ALLO, P731

[4]

CETEL AD, 1992, SUPERALLOYS 1992, P287

[5] Atomic mechanism of the Re and Ru strengthening effect on the γ-γ′ interface of Ni-based single-crystal superalloys:: a first-principles study [J].

Chen, K ;

Zhao, LR ;

Tse, JS .

PHILOSOPHICAL MAGAZINE, 2003, 83 (14) :1685-1698

[6] Sulfur embrittlement on γ/γ′ interface of Ni-base single crystal superalloys [J].

Chen, K ;

Zhao, LR ;

Tse, JS .

ACTA MATERIALIA, 2003, 51 (04) :1079-1086

[7]

DECKER RF, 1970, CLIMAX MOLYBDENUM, P147

[8] AN ALL-ELECTRON NUMERICAL-METHOD FOR SOLVING THE LOCAL DENSITY FUNCTIONAL FOR POLYATOMIC-MOLECULES [J].

DELLEY, B .

JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (01) :508-517

[9] ELECTRONIC, ELASTIC, AND FRACTURE PROPERTIES OF TRIALUMINIDE ALLOYS - AL3SC AND AL3TI [J].

FU, CL .

JOURNAL OF MATERIALS RESEARCH, 1990, 5 (05) :971-979

[10]

GIAMEI A, 1997, MET T A, V16, P1985

← 1 2 3 →