Transmission electron microscopy investigation of B27 martensitic phase in polycrystalline YCu intermetallic compound

被引：3
作者：
Cao, G. H. [1 ,2 ]
Schaarschuch, R. [2 ]
Oertel, C-G [2 ]
Skrotzki, W. [2 ]
机构：
[1] Shanghai Univ, Dept Mat Engn, Shanghai 200072, Peoples R China
[2] Tech Univ Dresden, Inst Strukturphys, D-01062 Dresden, Germany
来源：
CRYSTAL RESEARCH AND TECHNOLOGY | 2012年 / 47卷 / 01期
基金：
中国国家自然科学基金;
关键词：
intermetallics; martensitic phase transformation; microstructure; TEM; YCu; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; SLIP SYSTEMS; ALLOYS; DEFORMATION; MICROSTRUCTURE; DUCTILITY; YAG;
D O I：
10.1002/crat.201100378
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Polycrystalline YCu specimens with a CsCl-type B2 structure made by induction melting were investigated by transmission electron microscopy (TEM). TEM studies show that an orthorhombic YCu B27 martensite with FeB-type structure having lattice parameters a = 0.71 nm, b = 0.45 nm and c = 0.54 nm forms during deformation at ambient temperature. (101) twins are observed in the YCu B27 phase. The orientation relationship of B27 with B2 matrix is (001)[1 (1) over bar0](B27) (112)[1 (1) over bar0](B2). Effects of B27 phase formation on the ductility of YCu alloy are discussed. (c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
引用
收藏
页码：13 / 18
页数：6
相关论文
共 27 条
  • [11] TRANSFORMATION AND DEFORMATION STUDIES OF SOME ZR (CONI) ALLOYS
    LALL, C
    LORETTO, MH
    HARRIS, IR
    [J]. ACTA METALLURGICA, 1978, 26 (10): : 1631 - 1641
  • [12] 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
  • [13] AN ENVIRONMENTAL-EFFECT AS THE MAJOR CAUSE FOR ROOM-TEMPERATURE EMBRITTLEMENT IN FEAL
    LIU, CT
    LEE, EH
    MCKAMEY, CG
    [J]. SCRIPTA METALLURGICA, 1989, 23 (06): : 875 - 880
  • [14] EFFECT OF BORON ON GRAIN-BOUNDARIES IN NI3AL
    LIU, CT
    WHITE, CL
    HORTON, JA
    [J]. ACTA METALLURGICA, 1985, 33 (02): : 213 - 229
  • [15] Massalski T.B., 1996, Binary Alloy Phase Diagrams, V2nd
  • [16] Ab initio calculation of bulk and defect properties of ductile rare-earth intermetallic compounds
    Morris, JR
    Ye, YY
    Lee, YB
    Harmon, BN
    Gschneidner, KA
    Russell, AM
    [J]. ACTA MATERIALIA, 2004, 52 (16) : 4849 - 4857
  • [17] X-ray diffraction study of the phase purity, order and texture of ductile B2 intermetallics
    Mulay, R. P.
    Wollmershauser, J. A.
    Heisel, M. A.
    Bei, H.
    Russell, A. M.
    Agnew, S. R.
    [J]. ACTA MATERIALIA, 2010, 58 (07) : 2788 - 2796
  • [18] Effect of martensitic phase transformation on the ductility of polycrystalline YCu
    Oertel, C. -G.
    Schaarschuch, R.
    Cao, G. H.
    Tian, H. N.
    Freudenberger, J.
    Brokmeier, H. -G.
    Skrotzki, W.
    [J]. SCRIPTA MATERIALIA, 2011, 65 (09) : 779 - 782
  • [19] Physical metallurgy of Ti-Ni-based shape memory alloys
    Otsuka, K
    Ren, X
    [J]. PROGRESS IN MATERIALS SCIENCE, 2005, 50 (05) : 511 - 678
  • [20] Ritter C., 1992, J PHYS CONDENS MATT, V4, pL39
123