New design of aluminium based composites through combined method of powder metallurgy and thixoforming

被引:20
作者
Ferreira, Lygia Maria Policarpio [1 ]
Robert, Maria Helena [1 ]
Bayraktar, Emin [2 ]
Zaimova, Diana [2 ]
机构
[1] Univ Estadual Campinas, Fac Mech Engn, Campinas, SP, Brazil
[2] Mech & Mfg Engn Sch, SUPMECA LISMMA Paris, Paris, France
来源
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES XVI | 2014年 / 939卷
关键词
Recycling; Low cost Engineering; MMC; Thixoforming; Powder metallurgy; HARDNESS;
D O I
10.4028/www.scientific.net/AMR.939.68
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The present study deals with a new design of aluminium alloy based composites reinforced with SiC particles and Si/Al2O3 powders through combined methods of powder metallurgy and thixoforming. Moreover, recycled machining chips are used as raw material, specifically AA7075 chips generated in the aeronautical industry. The proposed method is based on forming at high temperatures a compacted mixture of metal chips and reinforcing particles, with the metal in thixotropic semi-solid condition. Composites containing different SiC weight fractions (10, 20 and 30%) were produced and had their microstructure analyzed. Mechanical properties were evaluated by means of micro-indentation tests. General results show the feasibility of producing composites by the proposed route. Products with good mechanical properties could be obtained. The process, even still not completely optimized as some improvement still must be achieved, can bring a new possibility for the production of a noble material from recycled wastes, particularly important in the high energy spending Al industries.
引用
收藏
页码:68 / +
页数:2
相关论文
共 10 条
[1]  
Botelho D. S., 2007, JAMME INT J ACHIEVEM, V22
[2]  
Fischer-Cripps AC, 2011, MECH ENG SER, P21, DOI 10.1007/978-1-4419-9872-9_2
[3]   Mechanically alloyed AlN particle-reinforced Al-6061 matrix composites: Powder processing, consolidation and mechanical strength and hardness of the as-extruded materials [J].
Fogagnolo, J. B. ;
Robert, M. H. ;
Torralba, J. M. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 426 (1-2) :85-94
[4]  
Hay J. L., 2000, ASM HDB MECH TESTING, V8
[5]   Multiscale creep compliance of epoxy networks at elevated temperatures [J].
Juliano, T. F. ;
VanLandingham, M. R. ;
Tweedie, C. A. ;
Van Vliet, K. J. .
EXPERIMENTAL MECHANICS, 2007, 47 (01) :99-105
[6]   SOLIDIFICATION PROCESSING OF METAL MATRIX COMPOSITES [J].
MORTENSEN, A ;
JIN, I .
INTERNATIONAL MATERIALS REVIEWS, 1992, 37 (03) :101-128
[7]   AN IMPROVED TECHNIQUE FOR DETERMINING HARDNESS AND ELASTIC-MODULUS USING LOAD AND DISPLACEMENT SENSING INDENTATION EXPERIMENTS [J].
OLIVER, WC ;
PHARR, GM .
JOURNAL OF MATERIALS RESEARCH, 1992, 7 (06) :1564-1583
[8]   Thixoforming of AA 2017 aluminum alloy composites [J].
Ozdemir, I. ;
Muecklich, S. ;
Podlesak, H. ;
Wielage, B. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2011, 211 (07) :1260-1267
[9]  
Robert M. H., 2012, JAME INT J ACHIEVEME, V54, P7
[10]   Effect of macrostructure and microstructure on the viscosity of the A356 alloy in the semi-solid state [J].
Zoqui, EJ ;
Paes, M ;
Robert, MH .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 153 :300-306