Lesson: Alloys Glencoe Science • Chemistry • Concepts and Applications • Glencoe • Chemistry • Matter & Change • Chemical InteractionsChemistry
In this lesson, we will learn how to describe the formation and the applications of alloys and the effect of alloying on the properties of metals.
Duralumin is an alloy of aluminum commonly used in aircraft construction.
What is the main alloying element in duralumin?
Why is duralumin more suitable than pure aluminum to use in aircraft construction?
The arrangement of a person’s teeth may be gradually altered by the attachment of a fine wire framework, known as a dental brace. Dental braces are commonly made of smart titanium alloys such as nitinol.
What is the main advantage of titanium alloys over steel for this application?
What is the main advantage of steel over titanium alloys for this application?
Nitinol is described as a smart alloy because it changes in response to a stimulus. Which stimulus affects the properties of nitinol the most?
Why are smart alloys such as nitinol more suitable than other titanium alloys for this application?
A major disadvantage of shape memory alloys is their high susceptibility to metal fatigue.
Which of the following is the best definition of metal fatigue?
Why are shape memory alloys more susceptible than other alloys to metal fatigue?