A Trivia Quiz On Types Of Aluminium Alloy!

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  • 1/10 Questions

    Grain refinement in Al alloys is achieved by :

    • Fast cooling of melt
    • Adding grain refinement elements
    • Cold working
    • All of the above
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About This Quiz

An alloy can be formed from the combination of two different metals or a metal and another element. As a result of this an aluminum alloy can be in different forms or types. Take this quiz and find out if the types of aluminum alloy you were thinking of is true.

A Trivia Quiz On Types Of Aluminium Alloy! - Quiz

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  • 2. 
    1XX.X designation is given to ___________ type of aluminium alloys. - ProProfs

    1XX.X designation is given to ___________ type of aluminium alloys.

    • Wrought

    • Cast

    • Copper containing

    • Silicon containing

    Correct Answer
    A. Cast
    Explanation
    The 1XX.X designation is given to cast type of aluminium alloys. This means that alloys with this designation are specifically used for castings, which are produced by pouring molten metal into a mold and allowing it to solidify. Cast aluminium alloys have different properties compared to other types of aluminium alloys, making them suitable for applications where casting is required, such as automotive parts, aerospace components, and household appliances.

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  • 3. 
     The strongest aluminium alloys are produced by ___________ . - ProProfs

     The strongest aluminium alloys are produced by ___________ .

    • Grain Boundary Strengthening

    • Age hardening

    • Solid solution strengthening

    • Strain hardening

    Correct Answer
    A. Age hardening
    Explanation
    Age hardening is a process used to strengthen aluminium alloys by subjecting them to a combination of heat treatment and rapid cooling. This process involves the precipitation of small particles within the alloy, which hinders the movement of dislocations and increases the strength of the material. Age hardening is particularly effective in strengthening aluminium alloys, making them stronger and more resistant to deformation and wear.

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  • 4. 
    Which of these is unused in 4-digit designation of aluminium alloys? - ProProfs

    Which of these is unused in 4-digit designation of aluminium alloys?

    • 3XX.X

    • 4XX.X

    • 5XX.X

    • 6XX.X

    Correct Answer
    A. 6XX.X
    Explanation
    The 6XX.X designation is unused in the 4-digit designation of aluminium alloys.

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  • 5. 
    ____________ causes hot cracking in 5XXX alloys. - ProProfs

    ____________ causes hot cracking in 5XXX alloys.

    • Sodium

    • Zirconium

    • Strontium

    • Zinc

    Correct Answer
    A. Sodium
    Explanation
    Sodium causes hot cracking in 5XXX alloys. Hot cracking, also known as solidification cracking, occurs during the solidification process of the alloy. Sodium is known to have a detrimental effect on the solidification process, leading to the formation of cracks. It has a low melting point and can easily penetrate the grain boundaries, causing weakening and cracking of the alloy. Sodium is particularly problematic in 5XXX alloys, which are commonly used in structural applications and require high strength and good weldability. Therefore, the presence of sodium can significantly compromise the mechanical properties of the alloy, making it susceptible to hot cracking.

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  • 6. 
    Magnesium decreases __________ of Al alloys. - ProProfs

    Magnesium decreases __________ of Al alloys.

    • Machineablilty

    • Weldability

    • Density

    • Ductility

    Correct Answer
    A. Density
    Explanation
    Magnesium decreases the density of Al alloys. When magnesium is added to aluminum alloys, it forms a solid solution, which leads to a decrease in the overall density of the alloy. This is because magnesium has a lower atomic mass than aluminum, resulting in a lighter material. The reduced density can be advantageous in various applications where weight reduction is desired, such as in the automotive and aerospace industries.

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  • 7. 
    Nickel and Chromium _________ and ________ corrosion resistance respectively. - ProProfs

    Nickel and Chromium _________ and ________ corrosion resistance respectively.

    • Improve, decrease

    • Decrease, improve

    • Improve, improve

    • Decrease, decrease

    Correct Answer
    A. Decrease, improve
    Explanation
    Nickel and chromium are both known for their corrosion resistance properties. Nickel helps to decrease corrosion by forming a protective layer on the surface of the metal, preventing it from coming into contact with corrosive elements. On the other hand, chromium improves corrosion resistance by forming a thin oxide layer on the surface of the metal, which acts as a barrier against corrosion. Therefore, the correct answer is "decrease, improve" as nickel decreases corrosion and chromium improves corrosion resistance.

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  • 8. 
    Cu is usually kept ___________ in non-heat treatable wrought alloys to avoid formation of insoluble intermetallic phases. - ProProfs

    Cu is usually kept ___________ in non-heat treatable wrought alloys to avoid formation of insoluble intermetallic phases.

    • <0.1

    • >0.1

    • <0.3

    • >0.3

    Correct Answer
    A. <0.3
    Explanation
    Cu is usually kept

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  • 9. 
    Silicon : - ProProfs

    Silicon :

    • Reduces fluidity

    • Reduces corrosion resistance

    • Increases thermal expansion coefficient

    • None of the above

    Correct Answer
    A. None of the above
    Explanation
    Silicon is known for its ability to enhance fluidity and corrosion resistance in materials. However, it does not increase the thermal expansion coefficient. Therefore, the correct answer is "none of the above" as silicon does not reduce fluidity, corrosion resistance, or increase the thermal expansion coefficient.

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  • 10. 
     Non heat-treatable alloys can be ________ to increase strength. - ProProfs

     Non heat-treatable alloys can be ________ to increase strength.

    • Strain hardened

    • Hot worked

    • Cold worked

    • All of the above

    Correct Answer
    A. Cold worked
    Explanation
    Cold working is a process in which a metal is deformed at room temperature, usually through processes like rolling, bending, or drawing. This deformation causes dislocations in the crystal structure of the metal, which increases its strength. Therefore, cold working can be used to increase the strength of non heat-treatable alloys.

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Quiz Review Timeline (Updated): Mar 19, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 09, 2019
    Quiz Created by
    Gapher
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