Formation of a bimodal structure in ultrafine Ti-Fe-Nb alloys with high-strength and enhanced ductility

被引：27
作者：
Cao, G. H. [1 ]
Peng, Y. F. [1 ]
Liu, N. [1 ]
Li, X. [1 ]
Lei, Z. S. [1 ]
Ren, Z. M. [1 ]
Gerthsen, D. [2 ]
Russell, A. M. [3 ,4 ]
机构：
[1] Shanghai Univ, Dept Mat Engn, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China
[2] Karlsruher Inst Technol, Lab Elektronenmikroskopie, D-76128 Karlsruhe, Germany
[3] US DOE, Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA
[4] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 609卷
基金：
中国国家自然科学基金;
关键词：
Titanium alloys; Nanostructured materials; Eutectics; Mechanical characterization; Plasticity; Electron microscopy; NANOSTRUCTURE-DENDRITE COMPOSITE; MECHANICAL-PROPERTIES; LARGE PLASTICITY; BULK ALLOYS; SN; MICROSTRUCTURE; METALS; PHASE;
D O I：
10.1016/j.msea.2014.04.088
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bulk (Ti(70.5)Fe29.5)(100-x)Nb-x (x=0, 3, 5 and 7 at%) alloys were prepared by cold crucible levitation melting, and their mechanical properties were tested in compression at room temperature. A (Ti70.5Fe29.5)(97)Nb-3 alloy specimen in compression exhibited an ultimate compressive strength of 2.53 GPa and a compressive plastic strain of 15%. Electron microscope observations indicated that lamellar structures present in the eutectic Ti70.5Fe29.5 alloy could be modified by the addition of Nb to obtain a bimodal structure. The improvement of the mechanical properties is attributed to two factors: (1) the bimodal phase size distribution with micrometer-sized primary beta-Ti dendrites embedded inside a matrix of refined ultrafine eutectics (beta-Ti+TiFe), and (2) the larger lattice mismatches between the beta-Ti and TiFe phases in Nb-modified eutectic Ti-Fe alloys that introduce coherency strain at the interface. The orientation relationship of A2 beta-Ti with B2 TiFe in binary and Nb-modified Ti-Fe alloys is TiFe (110)[001] II beta-Ti (110)[001]. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：60 / 64
页数：5
相关论文
共 50 条
  • [31] New biocompatible low modulus and high strength β Ti-Fe-Nb-Sn ultrafine eutectic composites
    Rossi, Mariana C.
    Afonso, Conrado R. M.
    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2023, 27 : 7695 - 7704
  • [32] Design of novel AlCoFeNiV high-entropy alloys with high-strength and high-ductility
    Wang, Xin
    An, Zibing
    Cai, Jixiang
    Jiang, Cheng
    Su, Honghong
    Luo, Xianmin
    Li, Ziyao
    Wu, Shichang
    Yang, Luyan
    Long, Haibo
    Zhang, Jianfei
    Mao, Shengcheng
    Zhang, Ze
    Han, Xiaodong
    MATERIALS CHARACTERIZATION, 2023, 203
  • [33] Enhanced ductility in a bimodal ultrafine-grained Ti-6Al-4V alloy fabricated by high energy ball milling and spark plasma sintering
    Long, Y.
    Wang, T.
    Zhang, H. Y.
    Huang, X. L.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 608 : 82 - 89
  • [34] Nanostructured high-strength molybdenum alloys with unprecedented tensile ductility
    Liu, G.
    Zhang, G. J.
    Jiang, F.
    Ding, X. D.
    Sun, Y. J.
    Sun, J.
    Ma, E.
    NATURE MATERIALS, 2013, 12 (04) : 344 - 350
  • [35] Mechanical behavior and tensile/compressive strength asymmetry of ultrafine structured Ti-Nb-Ni-Co-Al alloys with bi-modal grain size distribution
    Okulov, I. V.
    Kuehn, U.
    Romberg, J.
    Soldatov, I. V.
    Freudenberger, J.
    Schultz, L.
    Eschke, A.
    Oertel, C. -G.
    Skrotzki, W.
    Eckert, J.
    MATERIALS & DESIGN, 2014, 62 : 14 - 20
  • [36] Development of High-Strength, Fine, and Ultrafine-Grained Shape Memory Alloys
    V. G. Pushin
    N. N. Kuranova
    A. V. Pushin
    Physics of Metals and Metallography, 2018, 119 : 1346 - 1349
  • [37] Outstanding ductility of high-strength ultrafine-grained aluminium at cryogenic temperatures
    Orlova, T. S.
    Sadykov, D. I.
    MATERIALS PHYSICS AND MECHANICS, 2024, 52 (03): : 73 - 79
  • [38] Development of High-Strength, Fine, and Ultrafine-Grained Shape Memory Alloys
    Pushin, V. G.
    Kuranova, N. N.
    Pushin, A. V.
    PHYSICS OF METALS AND METALLOGRAPHY, 2018, 119 (13) : 1346 - 1349
  • [39] Formation of ultrafine structure in as cast Ti7CuXSn alloys
    Tsao, L. C.
    Wu, R. W.
    Wu, M. W.
    Huang, C. H.
    Chen, R. S.
    MATERIALS SCIENCE AND TECHNOLOGY, 2013, 29 (12) : 1529 - 1536
  • [40] Novel BCC Ti-Al-Nb-Zr medium-entropy alloys with ultrahigh specific strength and ductility
    Zhang, Yonggang
    Bu, Zhiqiang
    Yao, Tingting
    Yang, Lin
    Li, Wei
    Li, Jinfu
    JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 936
12345