Mechanical properties of Al-based metal matrix composites reinforced with Zr-based glassy particles produced by powder metallurgy

被引：252
|
作者：
Scudino, S. [1 ]
Liu, G. [1 ,2 ,3 ]
Prashanth, K. G. [1 ,4 ]
Bartusch, B. [1 ]
Surreddi, K. B. [1 ]
Murty, B. S. [4 ]
Eckert, J. [1 ,5 ]
机构：
[1] IFW Dresden, Inst Komplexe Mat, D-01171 Dresden, Germany
[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, Xian 710049, Peoples R China
[4] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
[5] Tech Univ Dresden, Inst Werkstoffwissensch, D-01062 Dresden, Germany
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 06期
关键词：
Powder consolidation; Metal matrix composites; Metallic glasses; Mechanical properties; Effective medium approximation; PACKED CERAMIC PARTICLES; QUASI-CRYSTAL FORMATION; FRACTURE MECHANISMS; ALUMINUM; ALLOYS; FABRICATION; BEHAVIOR; SHEAR; SIZE; MICROSTRUCTURE;
D O I：
10.1016/j.actamat.2009.01.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Al-based metal matrix composites consisting of pure Al reinforced with different amounts of Mechanically alloyed Zr(57)Ti(8)Nb(2.5)Cu(13.9)Ni(11.1)Al(7.5) glassy powder were produced by powder metallurgy, and their mechanical properties were investigated by room temperature compression tests. The samples were consolidated into highly dense bulk specimens at temperatures within the Supercooled liquid region in order to take advantage of the viscous flow behavior of the glassy powder. Compression tests show that the addition of the glass reinforcement increases the strength of pure Al from 155 to 250 MPa, while retaining appreciable plastic deformation with a fracture strain ranging between 70% and 40%. The yield strength and the elastoplastic deformation of such Composites containing a high volume fraction of glassy particles were accurately modeled using a shear lag model and a self-consistent effective medium approach. Finally. the fracture characteristics of the reinforcing particles were rationalized using a proposed fracture criterion. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2029 / 2039
页数：11
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