Phase Evolution in Hypereutectic Al90Cu10-xNix (x=0, 5) Alloys

被引:3
作者
Samal, Sumanta [1 ]
Phanikumar, Gandham [1 ]
机构
[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
关键词
Aluminium alloys; Microstructure; Quasi-peritectic reaction; X-ray diffraction; Electron microscopy; NANOSTRUCTURE-DENDRITE COMPOSITE; EUTECTIC STRUCTURE; WORK;
D O I
10.1007/s12666-015-0709-3
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The present work is aimed at understanding the phase evolution of hypereutectic Al-rich Al-Cu-Ni in situ composites consisting of ultrafine eutectic with micron scale dendrites. The hypereutectic Al90Cu10-xNix (x = 0, 5) are synthesized by vacuum arc melting technique under high purity argon atmosphere. Detailed X-ray diffraction and electron microscopic (SEM and TEM coupled with EDS) studies have been carried out to identify the phases in these alloys. Thermodynamic calculations performed using CALPHAD approach using ThermoCalc(A (R)) software predict the equilibrium solidification path. The Al90Cu5Ni5 alloy exhibits ternary quasi-peritectic reaction of L + Al3Ni -> (Al)(ss) + Al3Ni2 at invariant point, which is supported by two univariant reactions i.e. L + Al3Ni -> Al3Ni2 and L -> (Al)(ss) + Al3Ni2 above and below the invariant point respectively.
引用
收藏
页码:1221 / 1226
页数:6
相关论文
共 23 条
  • [1] [Anonymous], 1990, PROPERTIES SELECTION
  • [2] Biswas K, 2012, SOLIDIFICATION CONTA
  • [3] Dantzig J. A., 2009, SOLIDIFICATION
  • [4] Formation of ductile ultrafine eutectic structure in Ti-Fe-Sn alloy
    Das, J.
    Kim, K. B.
    Xu, W.
    Loeser, W.
    Eckert, J.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 449 : 737 - 740
  • [5] Bulk ultra-fine eutectic structure in Ti-Fe-base alloys
    Das, J.
    Kim, K. B.
    Baier, F.
    Loeser, W.
    Gebert, A.
    Eckert, J.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 434 (SPEC. ISS.) : 28 - 31
  • [6] Composition dependence of the microstructure and the mechanical properties of nano/ultrafine-structured Ti-Cu-Ni-Sn-Nb alloys
    He, G
    Eckert, J
    Löser, W
    Hagiwara, M
    [J]. ACTA MATERIALIA, 2004, 52 (10) : 3035 - 3046
  • [7] In situ formed Ti-Cu-Ni-Sn-Ta nanostructure-dendrite composite with large plasticity
    He, G
    Löser, W
    Eckert, J
    [J]. ACTA MATERIALIA, 2003, 51 (17) : 5223 - 5234
  • [8] Novel Ti-base nanostructure-dendrite composite with enhanced plasticity
    He, G
    Eckert, J
    Löser, W
    Schultz, L
    [J]. NATURE MATERIALS, 2003, 2 (01) : 33 - 37
  • [9] AlNiY chill-zone alloys with good mechanical properties
    Li, Yan
    Georgarakis, Konstantinos
    Pang, Shujie
    Antonowicz, Jerzy
    Charlot, Frederic
    LeMoulec, Alain
    Zhang, Tao
    Yavari, Alain Reza
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 477 (1-2) : 346 - 349
  • [10] High-strength hypereutectic Ti-Fe-Co bulk alloy with good ductility
    Louzguine, DV
    Kato, H
    Inoue, A
    [J]. PHILOSOPHICAL MAGAZINE LETTERS, 2004, 84 (06) : 359 - 364