Machinability of Particulate Aluminium Matrix Composites

Tomac, Nikola; Tannessen, K.; Rasch, Finn Ola

doi:10.1016/s0007-8506(07)61151-2

Cited by 244 publications

(101 citation statements)

References 2 publications

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“…Thus in machining of the composites while the matrix deforms plastically and the SiC particles may only deform elastically or break. The reinforcing particles both SiCp and Graphite act as chip breakers in turning of Metal Matrix composites [20][21][22] . Analysis of prior research shows that the effect of turning on surface roughness of hybrid metal matrix composites has not been adequately addressed.…”

Section: Introductionmentioning

confidence: 99%

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Basavarajappa

Davim

2013

Mat. Res.

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This study presents an experimental investigation on surface roughness and chip formation in turning of Al 2219/15SiCp and Al 2219/15SiCp-3Gr (hybrid) composites. Experiments were conducted with different cutting conditions using carbide, coated carbide and polycrystalline diamond (PCD) tools. The results reveal that the surface roughness values are less for coated carbide tools compared to carbide and are minimum for PCD tools. The incorporation of graphite in Al 2219/15SiCp composite increases the surface roughness. This is due to smearing and removal of softer and amorphus graphite particles on the surface of the specimen, creates pits on the machined surface which increases the surface roughness values. The graphitic composite produced discontinuous chips leads to easy machining. PCD tool performs better than carbide and coated carbide tools.

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Section: Introductionmentioning

confidence: 99%

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Basavarajappa

Davim

2013

Mat. Res.

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“…This characteristic leads to difficulties in machining of these composites, primarily of rapid wear of the cutting tools. Therefore, the available literature concentrates on the study of wear characteristics of various tool materials during machining of aluminium alloy based MMCs [4][5][6][7]. However, in view of the growing engineering applications of these composites, a need for detailed and systematic study of their machining characteristics was envisaged.…”

Section: Introductionmentioning

confidence: 99%

Analysis of chip breaking during orthogonal machining of Al/SiCp composites

Joshi

Ramakrishnan

1999

Journal of Materials Processing Technology

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With the advent of large number of composite materials, a systematic study of machining characteristics of these new materials is necessary for their rapid adoption in the actual engineering applications. This paper is an attempt to understand the machining characteristics of Al/SiCp composite material, which is the most widely used and projected to have large application in the near future. A detailed study of fundamental aspects of chip formation during orthogonal machining is carried out. From the visual observation of the physical form of chips, a systematic chip breaking pattern was observed. Also, the chip breaking phenomenon was related to the mechanical properties of composites by a chip breaking criterion. An understanding of chip curling and breaking can be very helpful in designing cutting tools with constrained chip flow space (like drills, taps, broaches, etc.).

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“…Genel olarak toz metalürjisi, saf metal ve alaşım tozları ile seramik esaslı tozların karıştırılarak preslenmesi, sinterlenmesi ve böylece dayanımlarının arttırılması amacıyla yeni malzeme üretim tekniği şeklinde tanımlanmaktadır [4,5,6]. Kısaca toz metalürjisi, tozların bazı işlemlerden geçirilerek yararlı mühendislik malzemelerine dönüştürülmesidir [6].…”

Section: Introductionunclassified

TOZ METALURJİSİ YÖNTEMİ İLE ÜRETİLEN Al2024-Si ALAŞIMI KOMPOZİTLERDE Si MİKTARININ VE YAŞLANDIRMA SÜRELERİNİN ETKİSİ

Karabulut

Türkmen

2017

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZAl2024 matrisli Si takviyeli kompozitler, Al2024 alaşım tozlarının içerisine ağırlıkça ayrı ayrı %5, 10 ve 15 oranında Si ilavesi yapılarak klasik Toz Metalürjisi yöntemiyle üretilmiştir. Tozlar 0,0001 hassasiyetli terazi ile tartılarak, üç eksenli karışım yapan turbulo cihazında bir saat süreyle karıştırılmıştır. Elde edilen karışım tozlar 12 mm çapında 10 mm yüksekliğinde blok oluşturacak şekilde tek eksenli pres ile blok haline getirilmiştir. Blok haline getirilen numuneler kademeli olarak önce 300°C'de 30 dakika, ardından 590°C'de 90 dakika bekletilerek sinterlenmiştir. Üretilen numunelere farklı parametrelerde yaşlandırma işlemi uygulanarak, kompozitlerde yaşlandırma süresinin ve Si miktarının sertlik özelliklerine etkisi incelenmiştir.Anahtar Kelimeler: Kompozit, Al2024, sertlik EFFECT OF THE AMOUNT OF Si AND AGING DURATIONS IN Al2024-Si ALLOYED COMPOSITES PRODUCED BY POWDER METALLURGY METHOD ABSTRACTIn the present paper, different weight fractions of 5, 10 and 15% Si particles reinforced Al2024 matrix composites were prepared by the powder metallurgy method. The powders were prepared using a digital weighing scale with a precision of 0.0001. The powders were stirred with turbulo machine for 1 hour. Homogeneously mixed powders were pressed to form 12 mm in diameter and 10 mm height block in one direction. The pressed samples were sintered gradually first at 300ºC for 30 min then 590°C for 90 min in an argon atmosphere. Sintered samples were applied aging treatment by different parameters. The effects of Si addition and aging time on hardness behaviour of composites have been investigated.

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Machinability of Particulate Aluminium Matrix Composites

Cited by 244 publications

References 2 publications

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Influence of graphite particles on surface roughness and chip formation studies in turning metal matrix composites

Analysis of chip breaking during orthogonal machining of Al/SiCp composites

TOZ METALURJİSİ YÖNTEMİ İLE ÜRETİLEN Al2024-Si ALAŞIMI KOMPOZİTLERDE Si MİKTARININ VE YAŞLANDIRMA SÜRELERİNİN ETKİSİ

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