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Characteristics of aluminiom_components_analysis

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karthick p
karthick p

This document discusses composite materials made of aluminum reinforced with silicon carbide particles (7075Al/SiCp composites). It outlines the objectives to fabricate these composites using stir casting, and study their tensile strength, impact strength, hardness, and microstructure. Tables show results from impact testing, hardness testing, and tensile testing of composites with 10%, 15%, and 20% SiC additions. Micrographs show the microstructures of the different composites. Applications of aluminum matrix composites include brake rotors, braking systems, engine pushrods, and electrical conductors. They offer benefits like greater strength, stiffness, lower density, and improved thermal and wear properties compared to other materials.

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Karthick .p 3rd year mech Phone number:9655309471 1
A composite material is a combination of two or more chemically distinct materials to form a stronger material. The term “composite” broadly refers to a material system which is composed of a discrete constituent (the reinforcement) distributed in a continuous phase (the matrix), and which derives its distinguishing characteristics from the properties of its constituents, from the geometry and architecture of the constituents, and from the properties of the boundaries (interfaces) between different constituents. Composite materials are usually classified on the basis of the physical or chemical nature of the matrix phase, e.g., polymer matrix, metal-matrix and ceramic composites. 2
1. To fabricate 7075Al/SiCp composites through stir casting technique 2. To study tensile strength of 7075Al/SiCp composites 3. To study impact strength of 7075Al/SiCp composites 4. To study hardness of 7075Al/SiCp composites 5. To study micro structure of composite materials 3
• High performance aluminium centric material systems. The reinforcement inAMCs could be in the form of continuous/discontinuous fibres, whisker or particulates, in Aluminium matrix composites (AMCs) refer to the class of light weight volume fractions ranging from a few percent to 70%. • Aluminum matrix composites (AMCs) have been widely studied since the 1920s. • They offer a large variety of mechanical properties depending on the chemical composition of the Al-matrix. They are usually reinforced by Al2O3, SiC, C but SiO2, B, BN, B4C, AlN may also be considered 4
STIR CASTING PROCESS • One of the prominent and economical route for development and processing of metal matrix composites materials. • Properties of these materials depend upon many processing parameters and selection of matrix and reinforcements. Literature reveals that most of the researchers are using 2, 6 and 7075 aluminum matrix reinforced with SiC particles for high strength properties whereas, insufficient information is available on reinforcement of "Al2O3" particles in 7075 aluminum matrix. 5
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• Tensile test • Impact test • Hardness test • Microscopic test 9
SNO SIZE OF THE SPECIMEN LOAD IN JOULES 12345678 15 15 15 15 20 20 20 20 18 16 18 20 28 26 24 32 IMPACT TEST 10
S NO MATERIAL MIN LOAD kgf MAX LOAD kgf SCAL E R.H.NO 12345678 15 15 15 15 20 20 20 20 60 60 60 60 60 60 60 60 100 100 100 100 100 100 100 100 B BBBBBBB 90 75 92 71 73 65 66 61 90 91 95 89 74 85 82 77 94 89 91 90 86 79 72 74 HARDNESS TEST: Avg 91.3 85 92.6 83.3 77.6 76.6 73.3 70.6 11
s.no Materi al Peak load in KN Displ acem ent at FMAX In mm Break ing load in KN Max displa ceme nt in mm Area in sq.m m Ulti mate stress in KN/s q.mm UTS in mpa 1 5m- 10% 12.4 34 7.160 3.830 7.350 50.28 6 0.247 247 2 5m- 15% 12.2 94 9.440 2.201 9.710 50.28 6 0.244 244 3 5m- 20% 16.9 47 11.60 8 2.637 15.59 0 50.28 6 0.337 337 Tensile test: 12
Microstructure of the composites ADDITION OF sic-10% ADDITION OF sic-15% ADDITION OF sic- 20% 13
(1) Brake rotors for German high speed train and made from a particulate reinforced aluminum alloy. Compared to conventional parts made out of cast iron with 120 kg/piece, the 76 kg of the AMC rotor offers an attractive weight saving potential. (2) The braking systems (discs, drums, calipers or back-plate) of the New Lupo from Volkswagen made from particulate reinforced aluminum alloy supplied by Duralcan. 14
(3) AMC continuous fiber reinforced pushrods produced by 3M racing engines. These pushrods weigh 40% as much as steel, are stronger and stiffer, and have high vibration damping. (4) AMC wires also developed by 3M for the core of a electrical conductors. The unique properties of this type of conductor offer substantial performance benefits when compared to the currently used steel wire reinforced conductors. 15
Greater strength Improved stiffness Reduced density(weight) Controlled thermal expansion coefficient Thermal/heat management Improved abrasion and wear resistance Control of mass (especially in reciprocating applications) Improved damping capabilities. 16
Thank you 17

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Characteristics of aluminiom_components_analysis

  • 1. Karthick .p 3rd year mech Phone number:9655309471 1
  • 2. A composite material is a combination of two or more chemically distinct materials to form a stronger material. The term “composite” broadly refers to a material system which is composed of a discrete constituent (the reinforcement) distributed in a continuous phase (the matrix), and which derives its distinguishing characteristics from the properties of its constituents, from the geometry and architecture of the constituents, and from the properties of the boundaries (interfaces) between different constituents. Composite materials are usually classified on the basis of the physical or chemical nature of the matrix phase, e.g., polymer matrix, metal-matrix and ceramic composites. 2
  • 3. 1. To fabricate 7075Al/SiCp composites through stir casting technique 2. To study tensile strength of 7075Al/SiCp composites 3. To study impact strength of 7075Al/SiCp composites 4. To study hardness of 7075Al/SiCp composites 5. To study micro structure of composite materials 3
  • 4. • High performance aluminium centric material systems. The reinforcement inAMCs could be in the form of continuous/discontinuous fibres, whisker or particulates, in Aluminium matrix composites (AMCs) refer to the class of light weight volume fractions ranging from a few percent to 70%. • Aluminum matrix composites (AMCs) have been widely studied since the 1920s. • They offer a large variety of mechanical properties depending on the chemical composition of the Al-matrix. They are usually reinforced by Al2O3, SiC, C but SiO2, B, BN, B4C, AlN may also be considered 4
  • 5. STIR CASTING PROCESS • One of the prominent and economical route for development and processing of metal matrix composites materials. • Properties of these materials depend upon many processing parameters and selection of matrix and reinforcements. Literature reveals that most of the researchers are using 2, 6 and 7075 aluminum matrix reinforced with SiC particles for high strength properties whereas, insufficient information is available on reinforcement of "Al2O3" particles in 7075 aluminum matrix. 5
  • 6. 6
  • 7. 7
  • 8. 8
  • 9. • Tensile test • Impact test • Hardness test • Microscopic test 9
  • 10. SNO SIZE OF THE SPECIMEN LOAD IN JOULES 12345678 15 15 15 15 20 20 20 20 18 16 18 20 28 26 24 32 IMPACT TEST 10
  • 11. S NO MATERIAL MIN LOAD kgf MAX LOAD kgf SCAL E R.H.NO 12345678 15 15 15 15 20 20 20 20 60 60 60 60 60 60 60 60 100 100 100 100 100 100 100 100 B BBBBBBB 90 75 92 71 73 65 66 61 90 91 95 89 74 85 82 77 94 89 91 90 86 79 72 74 HARDNESS TEST: Avg 91.3 85 92.6 83.3 77.6 76.6 73.3 70.6 11
  • 12. s.no Materi al Peak load in KN Displ acem ent at FMAX In mm Break ing load in KN Max displa ceme nt in mm Area in sq.m m Ulti mate stress in KN/s q.mm UTS in mpa 1 5m- 10% 12.4 34 7.160 3.830 7.350 50.28 6 0.247 247 2 5m- 15% 12.2 94 9.440 2.201 9.710 50.28 6 0.244 244 3 5m- 20% 16.9 47 11.60 8 2.637 15.59 0 50.28 6 0.337 337 Tensile test: 12
  • 13. Microstructure of the composites ADDITION OF sic-10% ADDITION OF sic-15% ADDITION OF sic- 20% 13
  • 14. (1) Brake rotors for German high speed train and made from a particulate reinforced aluminum alloy. Compared to conventional parts made out of cast iron with 120 kg/piece, the 76 kg of the AMC rotor offers an attractive weight saving potential. (2) The braking systems (discs, drums, calipers or back-plate) of the New Lupo from Volkswagen made from particulate reinforced aluminum alloy supplied by Duralcan. 14
  • 15. (3) AMC continuous fiber reinforced pushrods produced by 3M racing engines. These pushrods weigh 40% as much as steel, are stronger and stiffer, and have high vibration damping. (4) AMC wires also developed by 3M for the core of a electrical conductors. The unique properties of this type of conductor offer substantial performance benefits when compared to the currently used steel wire reinforced conductors. 15
  • 16. Greater strength Improved stiffness Reduced density(weight) Controlled thermal expansion coefficient Thermal/heat management Improved abrasion and wear resistance Control of mass (especially in reciprocating applications) Improved damping capabilities. 16