scholarly journals Development of Cu-Exfoliated Graphite Nanoplatelets (xGnP) Metal Matrix Composite by Powder Metallurgy Route

Graphene ◽  
2015 ◽  
Vol 04 (04) ◽  
pp. 91-111 ◽  
Author(s):  
Syed Nasimul Alam ◽  
Lailesh Kumar ◽  
Nidhi Sharma
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Exfoliated Graphite ◽  
Graphite Nanoplatelets ◽  
Exfoliated Graphite Nanoplatelets ◽  
Powder Metallurgy Route

Mechanical properties of melt infiltration and powder metallurgy fabricated aluminum metal matrix composite

2021 ◽  
pp. 095440542110159
Author(s):  
Mahmoud Awad ◽  
Noha M Hassan ◽  
Sathish Kannan
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Composite Foam ◽  
Space Holder ◽  
Aluminum Metal Matrix Composite ◽  
Melt Infiltration ◽  
Innovative Material ◽  
And Coping

Metal foams have drawn an increasing interest especially in applications where weight and energy absorption are critical. Despite the extensive studies available on their characterization and enhanced fabrication techniques, limited work was found on the possibility of producing a porous composite foam. The objective of this article is to investigate two new synthesis techniques for manufacturing metal matrix composite foam that is, powder metallurgy and melt infiltration. Both techniques are studied using Sodium Chloride (NaCl) as a space holder in an aluminum-based metal matrix and graphene nanoparticles as reinforcements. The effect of the quantity added of both the space holder and graphene is studied using designed experiments. Although powder metallurgy provided lower baseline hardness, experimentation results suggest the superiority of the process over melt infiltration in terms of porosity and hardness. Results suggest that baseline aluminum hardness can be increased by up to 21.5% using powder metallurgy and 15% using melt infiltration. In terms of porosity, powder metallurgy porosity increased baseline more than ten folds while melt infiltration only doubled the baseline porosity. Moreover, it is easier to control the macroscopic shape, density, and distribution of the pores using powder metallurgy. It is also easier to disperse the reinforcement homogenously. Results will support several industries such as military, automotive, medical, and aerospace in developing this innovative material with superior properties and coping with their need for advanced applications.

scholarly journals Processing Map for Hot Working of Powder Metallurgy 2124 AL - 20 VOL% SiCP Metal Matrix Composite

2000 ◽  
Vol 9 (2) ◽  
pp. 096369350000900
Author(s):  
S.V.S. Narayana Murty ◽  
B. Nageswara Rao ◽  
B.P. Kashyap
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Processing Map ◽  
Hot Working ◽  
Flow Instabilities ◽  
Instability Criterion ◽  
Processing Maps ◽  
Instability Condition

A simple instability condition based on the Ziegler's instability criterion is found to be more appropriate in delineating the regimes of flow instabilities in the processing maps of 2124 Al-20 Vol% SiCp metal matrix composite. Applicability of the criterion is demonstrated using the reported microstructural observations in open literature.

Processing maps for hot-working of powder metallurgy 1100 Al-10 vol % SiC-particulate metal-matrix composite

1993 ◽  
Vol 28 (8) ◽  
pp. 2141-2147 ◽  
Author(s):  
B. V. Radhakrishna Bhat ◽  
Y. R. Mahajan ◽  
H. Md. Roshan ◽  
Y. V. R. K. Prasad
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Hot Working ◽  
Processing Maps ◽  
Particulate Metal

scholarly journals Pengaruh Variasi Tekanan Kompaksi Powder Metallurgy Elektroda Metal Matrix Composites Tembaga - Grafit Terhadap Material Removal Rate Dan Electrode Relative Wear Pada Proses EDM Mesin Chimer EZ

2020 ◽  
Vol 3 (1) ◽  
pp. 46-54
Author(s):  
Dwi Handoko
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Material Removal Rate ◽  
Metal Matrix ◽  
Material Removal ◽  
Removal Rate ◽  
Matrix Composites ◽  
Relative Wear

Pada penelitian ini dilakukan pembuatan metal matrix composite dari bahan serbuk tembaga murni yang akan dipadu dengan bahan penguat berupa serbuk grafit yang dilanjutkan dengan pengujian pada mesin EDM. Metode pencampuran kedua material ini dilakukan dengan proses Powder metalurgi melalui tahapan pencampuran (mixing), penekanan (compaction) dan dilanjutkan dengan proses pemanasan dengan suhu 800 oC(sintering). Pada penelitian ini ingin diketahui pengaruh tekanan akibat proses powder metalurgi terhadap laju keausan material (MRR) dan laju keausan elektroda (ERR) pada material baja ST.37 mesin EDM Chimer EZ Dengan parameter pemakan tetap, arus 2 Amper dan kedalaman 5 mm. Pengujian yang dilakukan yaitu kekerasan dan struktur mikro. Dari hasil penelitian ini menunjukkan dengan semakin meningkatnya tekanan kompaksi laju keausan material MRR dan kekerasan semakin meningkat, sementara laju keausan terendahi terjadi pada tekanan kompaksi 25.000 KN

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