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Temperature (°C) 700 600 500 400 0 5 α Composition (at % Cu) 10 L α + L 300 0 10 20 (AI) α + θ 30 20 6 + L Ꮎ (CuAl2) 30 30 1200 1000 800 600 40 50 Composition (wt% Cu) Figure 1. A part of Al-Cu binary phase diagram Temperature (°F)

Temperature (°C) 700 600 500 400 0 5 α Composition (at % Cu) 10 L α + L 300 0 10 20 (AI) α + θ 30 20 6 + L Ꮎ (CuAl2) 30 30 1200 1000 800 600 40 50 Composition (wt% Cu) Figure 1. A part of Al-Cu binary phase diagram Temperature (°F)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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An Al-4.5wt%Cu alloy has a low-temperature yield stress of 600 MPa due to the precipitation strengthening effect imparted by the equilibrium q phase (Al2Cu) precipitates. Estimate the interparticle spacing and particle size in this alloy.
Given: density of α-solid solution 2,700 kg/m3 and density of q phase 4,430 kg/m3. Assume the Cu content in α-solid solution 0.5 wt% and the Cu content in the q phase 54%.   Hint: You need to use the Orowan model of particle strengthening and the lever rule among other concepts. 

 

Temperature (°C) 700 600 500 400 0 5 α Composition (at % Cu) 10 L α + L 300 0 10 20 (AI) α + θ 30 20 6 + L Ꮎ (CuAl2) 30 30 1200 1000 800 600 40 50 Composition (wt% Cu) Figure 1. A part of Al-Cu binary phase diagram Temperature (°F)
Transcribed Image Text:Temperature (°C) 700 600 500 400 0 5 α Composition (at % Cu) 10 L α + L 300 0 10 20 (AI) α + θ 30 20 6 + L Ꮎ (CuAl2) 30 30 1200 1000 800 600 40 50 Composition (wt% Cu) Figure 1. A part of Al-Cu binary phase diagram Temperature (°F)
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