Why Are Alloys Harder Than Pure Metals?

Answer

Alloys are harder than pure metals as they contain atoms of different sizes, which distort the regular arrangements of atoms. This therefore makes it more difficult for the layers to slide over each other and this is what makes alloys harder than the pure metal.
Q&A Related to "Why Are Alloys Harder Than Pure Metals"
Not necessarily. Depends which alloy and which metal.
http://answers.yahoo.com/question/index?qid=201203...
The true answer is quite in depth. The addition of carbon to iron makes steel. Adding other alloying elements produces a range of steels including all the stainless varieties. Addition
http://wiki.answers.com/Q/Why_is_the_alloy_of_stee...
Pure metals, such as copper, offer excellent features for electrical wiring, such as conductivity and ductility. Conductivity refers to the transmission of electrical current and
http://www.ehow.com/about_6399980_alloys-used-inst...
Alloys are more useful than pure metals because of cost, corrosion
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