Ppt metals PDF

Preview

Summary

notes on metals and materials...

Description

METALS     

Composition and Microstructure Ferrous Metals and Alloys Non-Ferrous Metals and Alloys Specifications and Proof Testing Corrosion

Composition and Microstructure  Metal: element that readily loses electrons to form positive ions, characterized by high electrical conductivity and malleable  Alloy: combinations of metals in a crystalline structure Structure of Metals  Microstructural properties determine all of the material properties of metals and alloys.  Different from Covalent and Ionic Bonds Alloying Structure  3-D lattice in metallic bonds provides  Opportunity for other element to occupy some of the positions.  or for small element to enter the lattice Interstitial Alloy  Between atomic lattice location  < 60% of the size of the lattice atoms  only a small % can fit interstitially For Transition metals only a few fit  H, B, C, N

Composition and Microstructure

 Metal: element that readily loses electrons to form positive ions, characterized by high electrical conductivity and malleable Alloy: combinations of metals in a crystalline structure ...