Electron Beam Melting of a β-Solidifying Intermetallic Titanium Aluminide Alloy

被引：32
作者：
Wartbichler, Reinhold [1 ]
Clemens, Helmut [1 ]
Mayer, Svea [1 ]
机构：
[1] Univ Leoben, Dept Mat Sci, Franz Josef Str 18, A-8700 Leoben, Austria
来源：
ADVANCED ENGINEERING MATERIALS | 2019年 / 21卷 / 12期
关键词：
additive manufacturing; microstructures; phase diagrams; textures; titanium aluminides; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEXTURE; DESIGN;
D O I：
10.1002/adem.201900800
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structural features of an electron-beam-melted titanium aluminide alloy are presented. The microstructure consisting of gamma-TiAl, alpha(2)-Ti3Al, and beta(o)-TiAl reveals inhomogeneous phase and Al distributions, which are quantified by electron probe microanalysis. Electron backscatter diffraction is utilized to indicate a solidification via the beta-phase preferably along the < 001 > direction, resulting in a {001} beta(o) fiber texture parallel to the building direction. These findings are correlated to a calculated isopleth section of the Ti-Al-Nb-Mo system and the corresponding phase fraction diagram. The investigated beta-solidifying gamma-TiAl-based alloy, therefore, combines both the characteristics of electronbeam-melted Ti and TiAl alloys.
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页数：5
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共 21 条
  • [1] The Origin of Microstructural Diversity, Texture, and Mechanical Properties in Electron Beam Melted Ti-6Al-4V
    Al-Bermani, S. S.
    Blackmore, M. L.
    Zhang, W.
    Todd, I.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (13): : 3422 - 3434
  • [2] THERMO-CALC & DICTRA, computational tools for materials science
    Andersson, JO
    Helander, T
    Höglund, LH
    Shi, PF
    Sundman, B
    [J]. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2002, 26 (02): : 273 - 312
  • [3] Effect of build geometry on the β-grain structure and texture in additive manufacture of Ti-6Al-4V by selective electron beam melting
    Antonysamy, A. A.
    Meyer, J.
    Prangnell, P. B.
    [J]. MATERIALS CHARACTERIZATION, 2013, 84 : 153 - 168
  • [4] Electron beam melting of Ti-48Al-2Cr-2Nb alloy: Microstructure and mechanical properties investigation
    Biamino, S.
    Penna, A.
    Ackelid, U.
    Sabbadini, S.
    Tassa, O.
    Fino, P.
    Pavese, M.
    Gennaro, P.
    Badini, C.
    [J]. INTERMETALLICS, 2011, 19 (06) : 776 - 781
  • [5] Blackburn M., 1970, Pergamon Press, P633
  • [6] On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium
    Burgers, WG
    [J]. PHYSICA, 1934, 1 : 561 - 586
  • [7] Design, Processing, Microstructure, Properties, and Applications of Advanced Intermetallic TiAl Alloys
    Clemens, Helmut
    Mayer, Svea
    [J]. ADVANCED ENGINEERING MATERIALS, 2013, 15 (04) : 191 - 215
  • [8] Intermetallic γ-Titanium Aluminide Based Alloys from a Metallographic Point of View - a Continuation
    Clemens, Helmut
    Mayer, Svea
    [J]. PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY, 2011, 48 (02): : 64 - 100
  • [9] Gamma titanium aluminide alloys - an assessment within the competition of aerospace structural materials
    Dimiduk, DM
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 263 (02): : 281 - 288
  • [10] Effect of hot rolling and primary annealing on the microstructure and texture of a β-stabilised γ-TiAl based alloy
    Erdely, Petra
    Staron, Peter
    Maawad, Emad
    Schell, Norbert
    Klose, Joachim
    Mayer, Svea
    Clemens, Helmut
    [J]. ACTA MATERIALIA, 2017, 126 : 145 - 153
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