ME215-4CMP - FUNDAMENTALS OF METAL ALLOYS, EQUILIBRIUM...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes FUNDAMENTALS OF METAL ALLOYS, EQUILIBRIUM DIAGRAMS Chapter 4
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes 4.2 What is a Phase? Phase is a form of material having characteristic structure and properties. More precisely: form of material with identifiable composition (chemistry), definable structure , and distinctive boundaries (interfaces) which separate it from other phases.
Background image of page 2
Veljko Samardzic ME-215 Engineering Materials and Processes 4.2 Phases Phase can be continuous (air in the room) or discontinuous (salt grains in the shaker). Gas, liquid or solid. Pure substance or solution ( uniform structure throughout).
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Equilibrium Phase Diagrams Graphic mapping of the natural tendencies of a material or a material system (equilibrium for all possible conditions). Primary variables: temperature, pressure and composition. P-T diagram (the simplest).
Background image of page 4
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Temperature-Composition Diagrams Engineering processes conducted at atmospheric pressure (P/T variations). The most common: temperature- composition phase diagrams.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Cooling Curves Cooling curves for NaCl-H20 combinations:
Background image of page 6
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Cooling Curves Partial equilibrium diagram of NaCl-H20 system
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Solubility Solubility limits. Degree of solubility determines properties. I-Two metals completely soluble in each other. II- Two metals soluble in liquid state and insoluble in solid state. III-Two metals soluble in liquid state and partially soluble in solid state.
Background image of page 8
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Complete Solubility Copper-Nickel equilibrium diagram
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Veljko Samardzic ME-215 Engineering Materials and Processes 4.3 Partial Solid Solubility Degree of solubility depends on temperature At max. solubility, 183 C: lead holds up to 19.2 wt % tin in a single phase solution, and tin holds up to 2.5wt% lead and still be a single phase.
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/11/2011 for the course IE 101 taught by Professor Me during the Fall '11 term at Gazi Üniversitesi.

Page1 / 32

ME215-4CMP - FUNDAMENTALS OF METAL ALLOYS, EQUILIBRIUM...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online