Tensile Properties and Fracture Behavior of a Powder-Thixoformed 2024Al/SiCp Composite at Elevated Temperatures

被引：7
|
作者：
Li, Pubo [1 ]
Chen, Tijun [1 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
来源：
METALS | 2017年 / 7卷 / 10期
关键词：
powder thixoforming; composite; high temperature; tensile properties; fracture; ALUMINUM-MATRIX COMPOSITE; MICROSTRUCTURAL EVOLUTION; MECHANICAL-PROPERTIES; STRENGTHENING MECHANISMS; VOLUME FRACTION; FLOW-STRESS; GRAIN-SIZE; ALLOY; DEFORMATION; ENERGY;
D O I：
10.3390/met7100408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, the tensile properties and fracture behavior of a 2024Al composite reinforced with 10 vol % SiCp and fabricated via powder thixoforming (PT) were studied at temperatures ranging from 25 degrees C to 300 degrees C with a strain rate of 0.05 s(-1), as well as the PT 2024 alloy. The results indicated that the tensile strengths of both the PT materials were all decreased with increasing the temperature, but the decrease rate of the composite was smaller than that of the 2024 alloy, and the composite exhibited higher tensile strength than that of the 2024 alloy at all of the employed testing temperatures due to the strengthening role of SiCp. Increasing temperature was beneficial for enhancing the ductility of materials, and the maximum elongation was reached at 250 degrees C. The elongation decrease over 250 degrees C was attributed to the cavity formation due to the debonding of the SiCp/Al interface and the fracturing of the matrix between SiCp. The fracture of the composite at room temperature initiated from the fracture of SiCp and the debonding of the SiCp/Al interface, but that at high temperatures was dominated by void nucleation and growth in the matrix besides the interface debonding.
引用
收藏
页数：13
相关论文
共 50 条
  • [41] Dynamic mechanical properties and failure mechanism of 50vol%SiCp/2024Al composites
    Wang, Y. W.
    Wang, F. C.
    Yu, X. D.
    Wang, C. Y.
    Ma, Z.
    DYMAT 2009: 9TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING, VOL 2, 2009, : 1223 - 1229
  • [42] Effect of aging treatment on mechanical properties of (SiCw+SiCp)/2024Al hybrid nanocomposites
    Geng, L
    Zhang, XN
    Wang, GS
    Zheng, ZZ
    Xu, B
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2006, 16 (02) : 387 - 391
  • [43] Microstructure and damping behavior of SiCp/Gr/2024Al metal matrix composites by squeeze casting technology
    Leng Jin-feng
    Wu Gao-hui
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2006, 16 : S1640 - S1644
  • [44] Microstructure and elevated tensile properties of submicron SiCp/AZ91 magnesium matrix composite
    Deng, Kunkun
    Wang, Cuiju
    Wang, Xiaojun
    Wu, Kun
    Zheng, Mingyi
    MATERIALS & DESIGN, 2012, 38 : 110 - 114
  • [45] Effects of ZnO coating of whiskers on the tensile properties and aging behaviors of aluminum borate whiskers reinforced 2024Al composite
    Yue, H. Y.
    Chang, J.
    Gao, X.
    Zhang, S. L.
    Zhang, J. J.
    Zhang, H.
    Fei, W. D.
    Yu, Z. M.
    Guo, E. J.
    Kang, F. W.
    Wang, L. P.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 607 : 89 - 94
  • [46] Delayed fracture behavior of ceramics under tensile loading at elevated temperatures
    Ohji, T
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2003, 111 (11) : 793 - 799
  • [47] Effects of solution treatment on tensile properties and strengthening mechanisms of SiCp/6061Al composites fabricated by powder thixoforming
    Zhang, X. Z.
    Chen, T. J.
    Qin, Y. H.
    MATERIALS & DESIGN, 2016, 99 : 182 - 192
  • [48] Work hardening behavior and tensile properties of a high-Mn damping steel at elevated temperatures
    Li, Xing
    Wei, Liangliang
    Chen, Liqing
    Zhao, Yang
    Misra, Raja Devesh Kumar
    MATERIALS CHARACTERIZATION, 2018, 144 : 575 - 583
  • [49] Effect of Extrusion Temperature on the Microstructure and Mechanical Properties of SiCnw/2024Al Composite
    Dong, Shanliang
    Zhang, Bin
    Zhan, Yuli
    Liu, Xin
    Xin, Ling
    Yang, Wenshu
    Wu, Gaohui
    MATERIALS, 2019, 12 (17)
  • [50] High strain rate superplastic deformation behavior of powder-metallurgy processed 17%SiCp/2024 Al composite
    Bi, J
    Xiao, BL
    Ma, ZY
    ACTA METALLURGICA SINICA, 2002, 38 (06) : 621 - 624
12345