Phase Diagram_5 - MME 2503 MATERIALS SCIENCE 1 Dr Zahurin...

Info icon This preview shows pages 1–7. Sign up to view the full content.

MME 2503 MATERIALS SCIENCE & ENGINEERINGENGINEERING 1 Dr Zahurin Halim Sem 2 1112
Image of page 1

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

Al- Hadid /Iron (ديدحلا) Surah 57 Verse 25 م م وق ي م ل ل ن م از م يم ل ل ل او م ب م ات م ك ل ل ل ا م ق ه ق ع م م م ان م ل ل ز م نأ م و م ت ل ان م ي ي ب م ل ل اب ل ان م ل م س ق ر ق ان م ل ل س م ر ل أ م د ل ق م ل م ع ق ف ل ان م م م و م د د يد ل ش م س د أ ل ب م ه ي يف ل د م يد ل ح م ل ل ا ان م ل ل ز م ن أ م وووووو و م ط ل س ل ق ل ل ل اب ل س ق ان ن لا ي ي و ل ق م ه م ل ن لا ن ن وووووو إ ل ب ل ي ل غ م ل ل اب ل ه ق ل م س ق ر ق و م ه ق ر ق ص ق ني م نم م ه ق ل م لا م م ل م ع ل ي م ل ل و م س ل ان ن لل ل ز د يز ل ع م We have already sent Our messengers with clear evidences and sent down with them the Scripture and the balance that the people may maintain [their affairs] in justice. And We sent down iron , wherein is great military might and benefits for the people , and so 2 Dr Zahurin Halim Sem 2 1112
Image of page 2
3 ISSUES TO ADDRESS... When we combine two elements... what equilibrium state do we get? In particular, if we specify... --a composition (e.g., wt%Cu - wt%Ni), and --a temperature (T) 1 then... How many phases do we get? What is the composition of each phase? How much of each phase do we get? Phase B Phase A Nickel atom Copper atom PHASE DIAGRAMS Dr Zahurin Halim Sem 2 1112
Image of page 3

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

4 LEARNING OBJECTIVE   KULLIYYAH OF ENGINEERING INTERNATIONAL ISLAMIC UNIVERSITY MALAYSIA After studying this chapter you must be able to : Describe equilibrium, phase, and degrees of freedom of materials. Describe cooling curves and phase diagrams and the type of information that may be extracted from them Describe a binary isomorphous phase diagram and able to draw a generic diagram showing all phase regions and relevant information Be able to apply tie line and lever rule to phase diagrams in order to determine the phase composition and phase fraction in a mixture Dr Zahurin Halim Sem 2 1112
Image of page 4
5 2 Solubility Limit : Max concentration for which only a solution occurs. Ex: Phase Diagram: Water-Sugar System Question: What is the solubility limit at 20C? Answer: 65wt% sugar . If C o < 65wt% sugar: sugar If C o > 65wt% sugar: syrup + sugar. Solubility limit increases with T: e.g., if T = 100C, solubility limit = 80wt% sugar. Pure Sugar Temperature (°C) 0 20 40 60 80 100 C o =Composition (wt% sugar) L (liquid solution i.e., syrup) Solubility Limit L (liquid) + S (solid sugar) 65 20 40 60 80 100 Pure Water Adapted from Fig. 9.1, Callister 6e. THE SOLUBILITY LIMIT Dr Zahurin Halim Sem 2 1112
Image of page 5

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

6 3 Components : The elements or compounds which are mixed initially (e.g., Al and Cu) Phases : The physically and chemically distinct material regions that result (e.g., and ).
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '14
  • Dr Zahurin Halim Sem, Zahurin Halim Sem, Dr Zahurin Halim

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern