When there is a single solid solution at each end of the phase diagram.
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For a Mg_2Pb system describe the solubility
The solubility of Pb in Mg is extensive BUT the solubility of Mg on Pb is limited.
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Describe what an 'intermetallic compound' is?
Represented by the vertical line in the phase diagram(it can exist by itself only at this precise composition). They have high T_m and stiffness because of a mixture of metallic and ionic bonds.
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Define a eutectoid reaction
Solid phase transforms to two other solid phases
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Define a Peritectic reaction
Liquid phase and a solid phase transforms to a single solid phase.
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What is a Peritectoid reaction?
Two solid phases transforms to a single solid phase.
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What is a monotectic reaction?
Liquid phase transforms to a single solid phase.
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What is special about intermetallic compounds?
They have strengthining of a 'soft' metal matrix by dispersing intermettalic compound in the matrix.
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Other cards in this set
Card 2
Front
For a Mg_2Pb system describe the solubility
Back
The solubility of Pb in Mg is extensive BUT the solubility of Mg on Pb is limited.
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