Spinel growth in the interface of δ-Al2O3 fibre reinforced aluminium piston alloys

1996 ◽  
Vol 31 (3) ◽  
pp. 795-805 ◽  
Author(s):  
H. J. Dudek ◽  
R. Borath ◽  
A. Kleine
Keyword(s):  
Aluminium Piston ◽  
Al2o3 Fibre

scholarly journals UJI KETAHANAN FATIK ALUMINIUM SCRAP HASIL REMELTING PISTON BEKAS MENGGUNAKAN ALAT UJI FATIK TIPE ROTARY BENDING

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Eko Budiyanto ◽  
Eko Nugroho ◽  
Agus Zainudin
Keyword(s):  
Yield Strength ◽  
Aluminium Piston

Aluminium merupakan salah satu logam non-ferrous yang paling banyak dipergunakan dalam bidang keteknikan karena memiliki sifat yang ringan, tahan terhadap korosi, dan dapat didaur ulang. Daur ulang adalah proses untuk menjadikan suatu bahan bekas menjadikan suatu bahan bekas menjadi suatu yang berguna. Dalam penelitian ini dilakukan daur ulang dengan metode remelting aluminium piston bekas dengan harapan nantinya bahan piston bekas dapat dipergunakan kembali. Tujuan penelitian ini adalah untuk mengetahai nilai kelelahan fatik aluminium hasil remelting piston bekas pada variasi beban yang berbeda. Metode penelitian memvariasikan beban 40%, 50%, dan 60% dari Yield Strength untuk menghasilkan nilai kelelahan. Nilai uji fatik dari pembebanan 40% Yield Strength diberi beban 1,2 kg mendapatkan nilai siklus putaran 171.026 dan waktu patah 01:34:01 detik. Pada pembebanan 50% Yield Strength diberi beban 1,5 kg mendapatkan nilai siklus putaran 56.796 dengan waktu patah 00:37:52 detik. Pada pembebanan 60% Yield Strength diberi beban 1,8 kg mendapatkan nilai siklus putaran 24.384 dan waktu patah 00:16:15 detik. Semakin besar beban yang diberikan semakin kecil siklus dan waktu yang dihasilkan, sebaliknya semakin kecil beban yang diberikan semakin besar siklus dan waktu yang dihasilkan.Kata kunci : Aluminium scrap, Piston bekas, Remelting, Uji fatik, Rotary bending.

scholarly journals ELECTROCHEMICAL CORROSION PERFORMANCE OF COMMERCIALLY USED ALUMINIUM ENGINE BLOCK AND PISTON IN 0.1M NaCl

2015 ◽  
Vol 45 (1) ◽  
pp. 48-52 ◽  
Author(s):  
M S Kaiser ◽  
M R Qadir ◽  
Swagata Dutta
Keyword(s):  
Corrosion Potential ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Optical Microscope ◽  
Engine Block ◽  
Lower Percentage ◽  
Corrosion Performance ◽  
Transfer Resistance ◽  
Piston Alloy ◽  
Aluminium Piston

The corrosion behaviour of commercially used aluminium engine block and piston were investigated in 0.1M NaCl solution at room temperatures. The study was done by electrochemical method, using Tafel polarization and electrochemical impedance spectroscopy (EIS) techniques. The surface was characterized by optical microscope and scanning electron microscope (SEM). The results indicated differences in the charge transfer resistance of engine block and piston alloys. The current density (Icorr) of engine block material showed higher value than that of piston material. The corrosion potential (Ecorr) and pitting corrosion potential (Epit) of piston material were shifted to the more noble direction. In aluminium piston alloy there seems to be uniform surface pits formations which are in fewer amounts as compared to those in engine block alloy. The corrosion performance of aluminium piston alloy was found to be higher than that of aluminium engine block due to the presence of Ni and lower percentage of Fe in aluminium piston alloy.   

Thermal Analysis of Ceramic Coated Aluminium Piston with Slots

2014 ◽  
Vol 592-594 ◽  
pp. 786-790
Author(s):  
M.R. Chitthaarth ◽  
K. Manivannan
Keyword(s):  
Thermal Analysis ◽  
Thermal Expansion ◽  
Coating Thickness ◽  
Ceramic Coating ◽  
Working Condition ◽  
Middle Layer ◽  
Piston Crown ◽  
Alsi Alloy ◽  
Aluminium Piston ◽  
Plasma Sprayed

The main aim is to control thermal expansion in aluminium piston at high working condition. A plasma sprayed ceramic coating (TBC) is applied on the piston crown as a top coat and NiCrAl is applied as the middle layer as bond coat to improve the addition strength between the top coat and the metal subtract layer as AlSi alloy; we introduce a thermal slot on the piston shrink to regulate the heat flow in piston and make it cooler. We analyse the piston with these two implementations to determine the thermal analysis of the piston. The results can be shown in the various comparisons of coating thickness of top coat with thermal slots on the piston shrink. Increase in coating thickness reduces the stress in the coatings. It is observed that 85°C increase in 0.8mm coat than the ordinary piston.

Interfaces in alumina-fibre-reinforced aluminium piston alloys

1993 ◽  
Vol 167 (1-2) ◽  
pp. 129-137 ◽  
Author(s):  
H.J. Dudek ◽  
A. Kleine ◽  
R. Borath ◽  
G. Neite
Keyword(s):  
Alumina Fibre ◽  
Aluminium Piston

scholarly journals Quality Management of Aluminum Pistons with the Use of Quality Control Points

2020 ◽  
Vol 28 (1) ◽  
pp. 29-33
Author(s):  
Grzegorz Ostasz ◽  
Karolina Czerwińska ◽  
Andrzej Pacana
Keyword(s):  
Quality Control ◽  
Production Process ◽  
Internal Combustion Engines ◽  
Control Point ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Control Points ◽  
Control Methods ◽  
Aluminium Piston

AbstractThe publication analyses the way of managing and improving the quality of the production process of aluminum pistons for internal combustion engines. The aim of the article is to propose a method of analysis of the effectiveness of individual control methods used in the process of controlling the aluminium piston. Thanks to the location of a control point with the highest share of product non-compliance detection in the production process, it is possible to reduce quality control points by less effective points, which will contribute to lower costs or shorten the time of production processes. In view of the increasing demands on the efficiency of the checkpoints for components in internal combustion engines, the issue is important and topical.

Hydroxyapatite Matrix Composites by Hot Isostatic Pressing: Part 1. Alumina Fibre Reinforced

2012 ◽  
Vol 15 ◽  
pp. 73-83 ◽  
Author(s):  
N. Ehsani ◽  
A.J. Ruys ◽  
C.C. Sorrell
Keyword(s):  
Fracture Toughness ◽  
Hot Isostatic Pressing ◽  
Decomposition Temperature ◽  
Pressureless Sintering ◽  
Matrix Composites ◽  
Natural Bone ◽  
Alumina Fibre ◽  
Al2o3 Fibre ◽  
Toughness Improvement

Fracture Toughness Improvement of the Hydroxyapatite Matrix Composite, to a Level Comparable to that of Natural Bone for in Vivo Applications, Was the Aim of the Present Work. Hot Isostatic Press Using a Graphite/stainless Steel Encapsulation System Enabled the Production of Fully Dense Decomposition-Free Hap with Toughness Improvements of: 2.4 Times (Al2O3 Fibres, Optimally 20 Vol%). Glass Encapsulation of Fibre-Reinforced Hap Resulted in Aeration from Sample Volatilization. Further, it Was Found that the Hap Decomposition Temperature Was Higher at 100 Mpa (the Hiping Pressure) than for Pressureless Sintering. the Toughening Effect of the Al2o3 Fibre Additive Induced Plastic Deformation and Ductile Fracture.

Analysis of fatigue crack initiation and S–N response of model cast aluminium piston alloys

2011 ◽  
Vol 528 (24) ◽  
pp. 7331-7340 ◽  
Author(s):  
Thomas O. Mbuya ◽  
Ian Sinclair ◽  
Andrew J. Moffat ◽  
Philippa A.S. Reed
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Cast Aluminium ◽  
Aluminium Piston
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