Comparison of the microstructure, tensile, and creep behavior for Ti-24Al-17Nb-0.66Mo (atomic percent) and Ti-24Al-17Nb-2.3Mo (atomic percent) alloys

被引：32
|
作者：
Quast, J. P. [1 ]
Boehlert, C. J. [1 ]
机构：
[1] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2007年 / 38A卷 / 03期
关键词：
D O I：
10.1007/s11661-006-9074-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of small molybdenum additions, 0.66 and 2.3 at. pct, on the microstructure, tensile, and creep behavior of a nominally Ti-24Al-17Nb (at. pct) alloy was investigated. The alloy containing 2.3 at. pct Mo contained higher body-centered-cubic (bee) phase volume fractions, which was expected as Mo stabilizes the bee phase. Constant load, tensile-creep experiments were performed in the stress range of 29 to 275 MPa and the temperature range of 650 degrees C to 710 degrees C, in both air and vacuum environments. In-situ creep experiments were performed inside a scanning electron microscope chamber in order to identify the deformation evolution from surface observations. From these experiments, it was evident that alpha(2) intergranular cracking was prevalent and initiated the fracture process where the crack path followed the alpha(2) grain boundaries. The Ti-24Al-17Nb-23Mo (at. pct) alloy exhibited significantly lower creep rates than the Ti-24Al-17Nb-0.66Mo (at. pct) alloy, and this was associated with less contiguity of the alpha(2) phase.
引用
收藏
页码：529 / 536
页数：8
相关论文
共 50 条
  • [21] Microstructure and mechanical properties of powder metallurgy Ti-22Al-24Nb-0.5Mo (at.%) alloys
    Wu, J.
    Xu, L.
    Guo, R.P.
    Lu, Z.G.
    Cui, Y.Y.
    Yang, R.
    Materials Research Innovations, 2015, 19
  • [22] Effect of iron and nickel impurities on creep and tensile behaviour of Ti-24Al-20Nb-0.5Mo alloy
    Das, Jiten
    Gogia, A. K.
    Satyanarayana, D. V. V.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 496 (1-2): : 1 - 8
  • [23] EFFECT OF MICROSTRUCTURE ON CREEP OF TI-24AL-11NB POLYCRYSTALS
    ALBERT, DE
    THOMPSON, AW
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1992, 23 (11): : 3035 - 3043
  • [24] Effect of microstructure on the creep behaviour of Ti-24Al-11Nb
    Sundar, RS
    Sastry, DH
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 1996, 49 (04): : 437 - 441
  • [25] Tensile behavior of Ti-22Al-24Nb-0.5Mo in the range 25-650 °C
    Zhao, Hongze
    Lu, Bin
    Tong, Min
    Yang, Rui
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 679 : 455 - 464
  • [26] THE CREEP-BEHAVIOR OF THE TI3AL ALLOY TI-24AL-11NB
    HAYES, RW
    SCRIPTA METALLURGICA, 1989, 23 (11): : 1931 - 1936
  • [27] Ti-24Al-17Nb合金的激光焊接
    吴爱萍
    邹贵生
    张红军
    王国庆
    谢美蓉
    宇航材料工艺, 2001, (06) : 58 - 62
  • [28] MICROSTRUCTURE, CREEP, AND TENSILE DEFORMATION IN TI-6AL-2NB-1TA-0.8MO
    MILLER, WH
    CHEN, RT
    STARKE, EA
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (08): : 1451 - 1468
  • [29] MICROSTRUCTURE AND TENSILE PROPERTIES OF A TI3AL-NB-MO-V ALLOY
    JIA, TC
    WANG, B
    ZOU, DX
    MA, HP
    ZHONG, ZG
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 152 (1-2): : 317 - 321
  • [30] Microstructure and tensile properties of a Ti3Al-Nb-Mo-V alloy
    Tiancong, Jia
    Bin, Wang
    Dunxu, Zou
    Huiping, Ma.
    Zengyong Zhong
    Materials Science and Engineering A, 1992, A152 (1-2) : 317 - 321
12345