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alloys

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Title: alloys


1
ALLOYS
  • Prepared by
  • Ahmad Najibullah Bin Che Mohd

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  • WHAT IS ALLOYS ?

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  • Only a few elements are widely used commercially
    in their pure form.
  • Generally, other elements are present to produce
    greater strength, to improve corrosion
    resistance, or simply as impurities left over
    from the refining process.

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  • COMPOSITION OF METAL

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Alloy Composition
Brass Copper, Zinc
Bronze Copper, Zinc, Tin
Pewter Tin, Copper, Bismuth, Antimony
Cast Iron Iron, Carbon, Manganese, Silicon
Steel Iron, Carbon (plus small amounts of other elements)
Stainless Steel Iron, Chromium, Nickel
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PROPERTIES OF ALLOYS
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Titanium
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Aluminium
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Alloy Steels
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THE USES OF ALLOYS
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  • Aerospace alloys
  • Scandium-Aluminum
  • The main application of scandium by weight is in
    aluminum-scandium alloys for minor aerospace
    industry components. These alloys contain between
    0.1 and 0.5 of scandium. They were used in the
    Russian military aircraft Mig 21 and Mig 29.

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  • Marine alloys
  • These alloys are used for boat building and
    shipbuilding, and other marine and salt-water
    sensitive shore applications.
  • Automotive alloys
  • 6111 aluminum is extensively used for
    automotive body panels.
  • Sporting equipment
  • titanium is used in sporting equipment

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  • Stress corrosion cracking
  • SCC occurs in all grades of Al alloys
  • Even in mild corrosion environments (e.g.
    airplanes in marine condition).
  • Particular strong in age-hardened.
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