AN ELECTRON-DIFFRACTION INVESTIGATION OF THE DIFFUSE OMEGA-STRUCTURE IN QUENCHED TI-3D TRANSITION-METAL ALLOYS

被引：55
作者：
SINKLER, W [1 ]
LUZZI, DE [1 ]
机构：
[1] UNIV PENN, DEPT MAT SCI & ENGN, PHILADELPHIA, PA 19104 USA
来源：
ACTA METALLURGICA ET MATERIALIA | 1994年 / 42卷 / 04期
关键词：
D O I：
10.1016/0956-7151(94)90141-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Diffuse scattering resembling diffraction from the omega phase is investigated in quenched b.c.c. (beta) Ti-Cr using electron diffraction. A new structural model is presented which can reproduce the large shifts of diffuse peaks from the positions of omega-phase Bragg reflections which are seen in this system. Using the model it is proposed that CSRO in conjunction with an atomic size difference are responsible for the occurrence of this structure in quenched beta Ti-3d metal alloys. Evidence is presented for an electronic origin for CSRO in these systems.
引用
收藏
页码：1249 / 1260
页数：12
相关论文
共 38 条
  • [1] APAROV NN, 1975, FIZ MET METALLOVED+, V40, P1107
  • [2] Bagariatskii A., 1958, SOV PHYS DOKL, V3, P1014
  • [3] BLACKBURN MJ, 1967, T METALL SOC AIME, V239, P287
  • [4] SHORT-RANGE STRUCTURE OF TI AND ZR BCC SOLID-SOLUTIONS CONTAINING OMEGA PHASE .1. GENERAL DIFFRACTION THEORY AND DEVELOPMENT OF COMPUTATIONAL TECHNIQUES
    BORIE, B
    SASS, SL
    ANDREASS.A
    [J]. ACTA CRYSTALLOGRAPHICA SECTION A, 1973, A 29 (NOV1): : 585 - 594
  • [5] SPIN DENSITY WAVE AND SOFT PHONON MODE FROM NESTING FERMI SURFACES
    CHAN, SK
    HEINE, V
    [J]. JOURNAL OF PHYSICS F-METAL PHYSICS, 1973, 3 (04): : 795 - 809
  • [6] Chernov D., 1975, RUSS J PHYS CHEM, V49, P445
  • [7] AS-QUENCHED FORM OF OMEGA PHASE IN ZR-NB ALLOYS
    DAWSON, CW
    SASS, SL
    [J]. METALLURGICAL TRANSACTIONS, 1970, 1 (08): : 2225 - &
  • [8] UNUSUAL DIFFUSE-SCATTERING INTENSITIES FROM NITROGEN IN NIOBIUM
    DOSCH, H
    PEISL, J
    [J]. PHYSICAL REVIEW B, 1985, 32 (02): : 623 - 626
  • [9] DWIGHT AE, 1969, T METALL SOC AIME, V245, P389
  • [10] DYAKONOVA NB, 1981, FIZ MET METALLOVED+, V52, P119
1234