10-30-Lecture

10-30-Lecture - ✪ DIAGRAMS Part II ENGR 213 Eutectic Case Microstructure 1 ➜ All cases assume equilibrium ➜ case#1 composition between

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ✪ DIAGRAMS Part II ENGR 213 Eutectic Case Microstructure - 1 ➜ All cases assume equilibrium ➜ case #1: composition between pure & maximum solid solubility @ room temp Eutectic Case Microstructure - 2 case #2: composition between maximum solid solubility @ room temp & maximum solid solubility @ eutectic temp ➜ case #3: eutectic composition ➤ diffusion important ➤ alternating layered microstructure (eutectic structure) Eutectic Case Microstructure - 3 EUTECTIC STRUCTURE Sn-Pb Pb rich layers black ➜ case #4: all compositions except eutectic that cross eutectic isotherm ➤ microconstiuents: identifiable, characteristic structure ● primary phase ● eutectic structure ➤ modified lever rule Eutectic Case Microstructure - 4 50Sn-50Pb • α- dark • β- light α ➜ Alloy C’ 4 ➜ From eutectic phase ➤ W E = P/(P+Q) ➤ W α ’ = Q/(P+Q) ➜ From all phases ➤ W α = (Q+R)/(P+Q+R) Summary ➜ Binary Phase diagrams ➜ Two cases ➤ Isomorphous ➤ Eutectic ➜ Rules ➤...
View Full Document

This note was uploaded on 03/26/2008 for the course ENGR 213 taught by Professor Dr.stubbs during the Fall '04 term at Texas A&M.

Page1 / 19

10-30-Lecture - ✪ DIAGRAMS Part II ENGR 213 Eutectic Case Microstructure 1 ➜ All cases assume equilibrium ➜ case#1 composition between

This preview shows document pages 1 - 9. Sign up to view the full document.

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