ECE 331 Wi11 lecture 9

ECE 331 Wi11 lecture 9 - Basic Binary Phase Diagram T(C...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Basic Binary Phase Diagram 1600 T ( ° C) L liquid) 1400 1500 (qud ) Cu-Ni phase iagram 1200 1300 α (FCC solid solution) diagram 000 1100 Chapter 9 - wt% Ni 20 40 60 80 100 0
Background image of page 1

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

View Full Document Right Arrow Icon
Binary-Eutectic Systems T E Invariant point Chapter 9 -
Background image of page 2
Binary-Eutectic Systems 2 components has a special composition with a min. melting T . Cu-Ag C) 3 single phase regions Ex.: Cu-Ag system system L (liquid) 1200 T (ºC) 1000 ( L , α , β ) Limited solubility: α : mostly Cu mo s t l yAg α L + α L + β β 800 T E 8.0 71.9 91.2 779ºC β : mostly Ag T E : No liquid below T E : Composition at C E α + β 400 600 dapted from Fig 9 7 temperature T E C , wt% Ag 20 40 60 80 100 0 200 C E Eutectic reaction + Chapter 9 - 3 Adapted from Fig. 9.7, Ag) wt% 1.2 9 ( Ag) wt% .0 8 ( Ag) wt% 9 . 71 ( β + α L cooling heating L ( C E ) α ( C α E ) + β (
Background image of page 3

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

View Full Document Right Arrow Icon
EX 1: Pb-Sn Eutectic System ºC) For a 40 wt% Sn-60 wt% Pb alloy at 150ºC, determine: -- the phases present Pb-Sn ystem nswer: T (C ) 300 L (liquid) system Answer: α + β -- the phase compositions Answer: C α = 11 wt% Sn 99wt%Sn L + α L + β 200 18.3 α 183ºC 61.9 97.8 β -- the relative amount of each phase 50 C β = 99 wt% Sn nswer: α + β 100 150 S R W α = C β - C 0
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 12

ECE 331 Wi11 lecture 9 - Basic Binary Phase Diagram T(C...

This preview shows document pages 1 - 5. Sign up to view the full document.

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