Material Science Flashcards
A bond where one or more electrons wholly transferred from one atom to another
and the attraction is due to the opposite opolarity
Ionic Bond
Bond formed by shared electrons
Electrons fill both atom’s electron shells
Covalent Bond
A bond where many electrons are more or less free to move throughout
Metallic Bond
A bond where temporary weak charge where electron spend more time in one region of their orbit
Molecular Bond
Occurs due to the ease with hydrogen atoms are willing to give up electrons
Hydrogen Bond
does a larger or smaller grain size increase tensile strength and increase ductility
Smaller grain size increases tensile strength and ductility
What does a larger grain size improve
High temperature creep properties
What are the 3 types of Microscopic Imperfection classifications
Point imperfections
Line imperfections
Interfacial Imperfections
What are the 3 types of Point imperfections
Vacancy
Stubstitutional
Interstitial
What are the 3 Line Imperfections (or Dislocations)
Edge
Screw
Mixed
What are 3 characteristics of Alloys (generally)
Stronger than pure metals
Reduced electrical conductivity
Reduced Thermal conductivity
Define Toughness
Toughness defines the way a material reacts under a sudden impact
Define Hardness
The property of a material that enables it to resist plastic deformation
Define Ductility
The ability of a material to deform easily on application of tensile force
the ability of a material to withstand plastic deformation without rupture
Define Malleability
The metals ability to display large deformation or plastic response when subject to compressive force
