Review of Chapters 7 - 8 PRS

Review of Chapters 7 - 8 PRS - Chapters 7 & 8 Review...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapters 7 & 8 Review • Chapter 7 - Thermodynamics – Phase diagrams – Gibbs Phase Rule – Lever Rule – Equilibrium solidification and microstructure of alloys • Liquidius and solidus boundaries • Deviations from ideal behavior – Isomorphous phase diagram – Eutectic phase diagram – Peritectic phase diagram – Monotectic phase diagram – Complex diagrams – Phase equilibria involving solid-to-solid reactions
Background image of page 1

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

View Full DocumentRight Arrow Icon
Two-Component Phase Diagrams F = C – P + 1 F = 2 F = 1 T F: Degrees of freedom - Number of independent variables necessary to specify equilibrium In a two-phase field need to specify either the temperature or the composition of one of the phases. X s X l Isomorphous
Background image of page 2
Two-Component Phase Diagrams In a single-phase field the composition of the phase is the composition of the alloy In a two-phase field, the amount of each phase and the composition of each phase can be determined using a tie line and the lever rule In a single-phase field the composition of the phase is the composition of the alloy X o
Background image of page 3

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

View Full DocumentRight Arrow Icon
Two-Component Phase Diagrams Composition, X B Temperature () 1 1 1 ls ol s s s s l ss s s sl s ff XX f X f f X f X f X f f f += =+ =− + + −= = ( ) s o l s l f =
Background image of page 4
The Lever Rule in a Two-Component System
Background image of page 5

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

View Full DocumentRight Arrow Icon
PRS Question What is the fraction of solid, f s , in alloy 2 (X o = 0.3)? 1. 1/6 2. 2/6 3. ½ 4. 5/6
Background image of page 6
Composition, X B Temperature T A T B Eutectic Phase Diagrams
Background image of page 7

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

View Full DocumentRight Arrow Icon
PRS Question What is the fraction of a phase, f α , in alloy 3 at T 5 ? Alloy 3 1. ½ 2. 1/3 3. 2/3 4. None of the above
Background image of page 8
Eutectic Phase Diagram, No Solid Solubility Temperature Composition, X B
Background image of page 9

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

View Full DocumentRight Arrow Icon
PRS Question What is the proeutectic phase that forms in the hypoeutectic alloy X o ? 1. α 2. β 3. L
Background image of page 10
PRS Question What is the fraction of proeutectic α phase, f α , that forms in alloy X o ? 1. 0.176 2. 0.868 3. 0.588 4. 0.412
Background image of page 11

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

View Full DocumentRight Arrow Icon
PRS Question What is the fraction of β phase, f β , in the eutectic microconstituent that forms in alloy X o ?
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/03/2011 for the course MSE 2001 taught by Professor Tannebaum during the Spring '08 term at Georgia Institute of Technology.

Page1 / 59

Review of Chapters 7 - 8 PRS - Chapters 7 & 8 Review...

This preview shows document pages 1 - 13. Sign up to view the full document.

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