High strength-ductility synergy of MgAlB4 whisker reinforced aluminum matrix composites achieved by in situ synthesis

被引：14
作者：
Li, Jun [1 ]
Wang, Fucheng [1 ]
Shi, Chunsheng [1 ,2 ]
Liu, Enzuo [1 ,2 ]
He, Chunnian [1 ,2 ]
Zhao, Naiqin [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300350, Peoples R China
[2] Tianjin Univ, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300350, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 799卷
基金：
中国国家自然科学基金;
关键词：
Aluminum matrix composites; MgAlB4; whisker; Spatial distribution; High strength-ductility synergy; ENHANCED TENSILE PROPERTIES; HIGH-PRESSURE TORSION; MECHANICAL-PROPERTIES; CERAMIC REINFORCEMENT; FRACTURE-BEHAVIOR; GROWTH-MECHANISM; TIB WHISKERS; MICROSTRUCTURE; TEMPERATURE; EXTRUSION;
D O I：
10.1016/j.msea.2020.140127
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
For ceramic reinforced metal matrix composites, it is a critical issue to improve the limited ductility to achieve a combination of high strength and high toughness. Herein, in-situ synthesized MgAlB4 whisker reinforced Al (MgAlB(4)w/Al) composites with rational distribution of the reinforcement were successfully prepared by an efficient process combining vacuum pressureless sintering and hot-extrusion. The results demonstrate that the MgAlB4 whiskers noticeably coarsen with increasing sintering temperature, while the sintering duration has little effect on the size of the whiskers. The as-extruded composite with 15 wt% MgAlB(4)w has excellent comprehensive properties with the ultimate tensile strength of 380 MPa and the fracture elongation of similar to 9.6%. Fracture analysis reveals that the whiskers bear most loads and fracture firstly to form crack sources with the load increasing during drawing. In addition, the alignment distribution of MgAlB(4)w along extrusion direction is the main reason for the improved ductility of the MgAlB(4)w/Al composite.
引用
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页数：12
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共 57 条
  • [21] Effect of aspect ratios of in situ formed TiB whiskers on the mechanical properties of TiBw/Ti-6Al-4V composites
    Koo, Min Young
    Park, Jae Sung
    Park, Min Kyu
    Kim, Kyung Tae
    Hong, Soon Hyung
    [J]. SCRIPTA MATERIALIA, 2012, 66 (07) : 487 - 490
  • [22] Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion
    Li, Shufeng
    Kondoh, Katsuyoshi
    Imai, Hisashi
    Chen, Biao
    Jia, Lei
    Umeda, Junko
    Fu, Yabo
    [J]. MATERIALS & DESIGN, 2016, 95 : 127 - 132
  • [23] Effective atomic diffusion coefficient dependence on applied pressure during spark plasma sintering
    Li, X. X.
    Yang, C.
    Chen, T.
    Fu, Z. Q.
    Li, Y. Y.
    Ivasishin, O. M.
    Lavernia, E. J.
    [J]. MATERIALIA, 2019, 6
  • [24] Effect of Mg on microstructure and mechanical properties of Al-Mg alloys produced by high pressure torsion
    Liu, Yang
    Liu, Manping
    Chen, Xuefei
    Cao, Yang
    Roven, Hans J.
    Murashkin, Maxim
    Valiev, Ruslan Z.
    Zhou, Hao
    [J]. SCRIPTA MATERIALIA, 2019, 159 : 137 - 141
  • [25] The Future of Metals
    Lu, K.
    [J]. SCIENCE, 2010, 328 (5976) : 319 - 320
  • [26] Growth mechanism of in situ synthesized TiBw in titanium matrix composites prepared by common casting technique
    Lu, W. J.
    Xiao, L.
    Geng, K.
    Qin, J. N.
    Zhang, D.
    [J]. MATERIALS CHARACTERIZATION, 2008, 59 (07) : 912 - 919
  • [27] The high-temperature creep behaviour of 2124 aluminium alloys with and without particulate and SiC-whisker reinforcement
    Ma, ZY
    Tjong, SC
    [J]. COMPOSITES SCIENCE AND TECHNOLOGY, 1999, 59 (05) : 737 - 747
  • [28] FEM predictions of damage in continous fiber ceramic matrix composites under transverse tension using the crack band method
    Meyer, P.
    Waas, A. M.
    [J]. ACTA MATERIALIA, 2016, 102 : 292 - 303
  • [29] High-pressure torsion for enhanced atomic diffusion and promoting solid-state reactions in the aluminum-copper system
    Oh-ishi, Keiichiro
    Edalati, Kaveh
    Kim, Hyoung Seop
    Hono, Kazuhiro
    Horita, Zenji
    [J]. ACTA MATERIALIA, 2013, 61 (09) : 3482 - 3489
  • [30] Preparation of high fracture performance SiCp-6061Al/6061Al composite
    Qin, SY
    Zhang, GD
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 279 (1-2): : 231 - 236
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