Mechanical properties of single crystal YCu and (Tb0.88Dy0.12)Zn B2 intermetallic compounds

被引：46

作者：

Russell, AM ^{[1
]}

Zhang, Z

Gschneidner, KA

Lograsso, TA

Pecharsky, AO

Slager, AJ

Kesse, DC

机构：

[1] Iowa State Univ, USDOE, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

[3] Bell Helicopters Textron, Ft Worth, TX USA

来源：

INTERMETALLICS | 2005年 / 13卷 / 06期

关键词：

rare-earth intermetallics; mechanical properties at ambient temperature; plastic deformation mechanisms; phase transformations; fracture mode;

D O I：

10.1016/j.intermet.2004.09.009

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：

Single crystal specimens of YCu with the B2-type crystal structure were tested in tension and in compression, and the isostructural single crystal specimens of 132 (Tb0.88Dy0.12)Zn were tested in tension. The YCu tensile specimens elongated several percent before fracture. The active slip systems in YCu in tension were found to be {100}< 010 > (tau(CRSS) = 17 MPa) and {110}< 010 > (tau(CRSS) = 18 MPa). Specimens of single crystal YCu were compression tested with the (100) direction as the compression axis, an orientation that puts no resolved shear stress on either the {100}< 010 > or the {110}< 010 >. These compression tests resulted in high yield stresses followed by what is believed to be a stress induced transformation to another crystallographic structure of YCu, the B27-type crystal structure. All specimens of (Tb0.88Dy0.12)Zn failed by brittle fracture. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：565 / 571

页数：7

共 11 条

[1] [Anonymous], INTERMETALLIC COMPOU
[2] AUGMENTED-PLANE-WAVE CALCULATIONS OF ELECTRONIC-STRUCTURE OF INTERMETALLIC COMPOUNDS YCU AND YZN
BELAKHOVSKY, M
PIERRE, J
RAY, DK
[J]. PHYSICAL REVIEW B-SOLID STATE, 1972, 6 (03): : 939 - +
[3] The flow stress of NiAl single crystals below room temperature
Brunner, D
Gumbsch, P
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 319 : 337 - 341
[4] Multiple easy-axis changes in magnetostrictive Tb0.88DY0.12Zn
Cullen, JR
Teter, JP
Wun-Fogle, M
Restorff, JB
Clark, AE
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) : 3820 - 3822
[5] INDEPENDENT SLIP SYSTEMS IN CRYSTALS
GROVES, GW
KELLY, A
[J]. PHILOSOPHICAL MAGAZINE, 1963, 8 (89): : 877 - &
[6] A family of ductile intermetallic compounds
Gschneidner, K
Russell, A
Pecharsky, A
Morris, J
Zhang, ZH
Lograsso, T
Hsu, D
Lo, CHC
Ye, YY
Slager, A
Kesse, D
[J]. NATURE MATERIALS, 2003, 2 (09) : 587 - 590
[7] Recent advances in B2 iron aluminide alloys: deformation, fracture and alloy design
Liu, CT
George, EP
Maziasz, PJ
Schneibel, JH
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 258 (1-2): : 84 - 98
[8] GEOMETRICAL ASPECTS OF THE PLASTIC DEFORMATION OF METAL SINGLE CRYSTALS
MADDIN, R
CHEN, NK
[J]. PROGRESS IN METAL PHYSICS, 1954, 5 : 53 - 95
[9] Ritter C., 1992, J PHYS CONDENS MATT, V4, pL39
[10] Emerging applications of intermetallics
Stoloff, NS
Liu, CT
Deevi, SC
[J]. INTERMETALLICS, 2000, 8 (9-11) : 1313 - 1320

← 1 2 →