Finite Element Analysis and Experimental Study on the Effect of Extrusion Ratio during Hot Extrusion Process of Aluminium Matrix Composites

2017 ◽  
Vol 67 (4) ◽  
pp. 428 ◽  
Author(s):  
Dhanalakshmi Sathishkumar ◽  
P. Sivakumar ◽  
K. Shanmuga Sundaram ◽  
S. Anand
Keyword(s):  
Finite Element ◽  
Strain Rate ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Fe Analysis ◽  
Extrusion Ratio ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Aluminium Matrix Composites ◽  
Strain And Strain Rate

The finite element (FE) analysis on the effect of extrusion process parameter namely, extrusion ratio at different billet temperatures on the plastic strain and strain rate of aluminium matrix composite during hot extrusion process has been dealt. The dynamic explicit FE code in ANSYS 15.0 workbench was used for simulation. The FE analysis was carried out on the SiC reinforced aluminium matrix composites for three extrusion ratios 4:1, 8:1 and 15:1, for the billet temperatures in the range 350 °C - 450 °C in steps of 50 °C. The plastic strain and strain rate were found to increase with increase in the extrusion ratio. A minimum strain and strain rate was found to occur at the billet temperature of 450 °C. The silicon carbide particles reinforced aluminium matrix composites were then extruded at the optimised temperature of 450 °C for various extrusion ratios as mentioned above. The effect of extrusion ratio on the microstructure and surface quality of extruded rod was studied.

Finite Element Analyses of Extrusion with a Two Stage Die and Manufacturing of Gradient Micro-Structures

2012 ◽  
Vol 528 ◽  
pp. 23-31 ◽  
Author(s):  
Yeong-Maw Hwang ◽  
Sergei Alexandrov ◽  
Yeau Ren Jeng ◽  
Tze Hui Huang ◽  
Oleg Borisovich Naimark
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Strain Rate ◽  
Cross Sections ◽  
Effective Strain ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Element Analysis ◽  
Strain And Strain Rate ◽  
Micro Structures

This paper aims to manufacture aluminum alloy metals with gradient micro-structures using hot extrusion process. The extrusion die is designed to have a straight channel part combined with a conical part. Materials pushed through this specially-designed die generate a non-uniform velocity distribution at cross sections inside the die and result in different strain and strain rate distributions. Accordingly, a gradient microstructure product can be obtained. At first, temperature, effective strain, and effective strain rate distributions at the die exit are discussed for different inclination angles in the conical die using the finite element analysis. Then, hot extrusion experiments are conducted to obtain aluminum alloy products with gradient micro-structures. The effects of the inclination angle on the grain size distribution at cross sections of the products are also discussed.

scholarly journals Tribological Behaviour of MoS2 and Graphite Reinforced Aluminium Matrix Composites

2021 ◽  
Vol 1059 (1) ◽  
pp. 012021
Author(s):  
A. Saravanakumar ◽  
D. Ravikanth ◽  
L. Rajeshkumar ◽  
D. Balaji ◽  
M. Ramesh
Keyword(s):  
Aluminium Matrix ◽  
Matrix Composites ◽  
Tribological Behaviour ◽  
Aluminium Matrix Composites

scholarly journals Al Matrix Composites Reinforced by Ti and C Dedicated to Work at Elevated Temperature

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3114
Author(s):  
Bartosz Hekner ◽  
Jerzy Myalski ◽  
Patryk Wrześniowski ◽  
Tomasz Maciąg
Keyword(s):  
Working Conditions ◽  
Elevated Temperatures ◽  
Aluminium Matrix ◽  
Carbon Surface ◽  
Matrix Composites ◽  
Time Intervals ◽  
Aluminium Matrix Composites ◽  
Al Matrix Composites ◽  
Microstructure Of The Material ◽  
Al Matrix

In this paper, the applicability of aluminium matrix composites to high-temperature working conditions (not exceeding the Al melting point) was evaluated. The behaviour of Al-Ti-C composites at elevated temperatures was described based on microstructural and phase composition observations for composites heated at temperatures of 540 and 600 °C over differing time intervals from 2 to 72 h. The materials investigated were aluminium matrix composites (AMC) reinforced with a spatial carbon (C) structure covered by a titanium (Ti) layer. This layer protected the carbon surface against contact with the aluminium during processing, protection which was maintained for the material’s lifetime and ensured the required phase compositions of Al4C3 phase limitation and AlTi3 phase creation. It was also proved that heat treatment influenced not only phase compositions but also the microstructure of the material, and, as a consequence, the properties of the composite.

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