Materials Engineering

Slides:

Advertisements

Similar presentations

Phase Diagrams Continued

Advertisements

Chapter 9-15 The copper-zinc phase diagram: Terminal and Intermediate Solid Solutions Terminal solid solutions intermediate solid solutions Commercial.

CHAPTER 8 Phase Diagrams 8-1.

Chapter 9: Phase Diagrams

Introduction to Materials Science, Chapter 9, Phase Diagrams University of Virginia, Dept. of Materials Science and Engineering 1 Development of microstructure.

The Iron-Iron Carbide Phase Diagram

INDUSTRIAL MATERIALS Instructed by: Dr. Sajid Zaidi

PHASE DIAGRAMS Phase B Phase A • When we combine two elements...

Chapter Outline: Phase Diagrams

How to calculate the total amount of  phase (both eutectic and primary)? Fraction of  phase determined by application of the lever rule across the entire.

Lecture 9 Phase Diagrams 8-1.

Chapter 9 Phase Diagrams.

ENGR-45_Lec-22_PhaseDia-2.ppt 1 Bruce Mayer, PE Engineering-45: Materials of Engineering Bruce Mayer, PE Licensed Electrical &

Copper (Cu) FCC nm atomic radii Silver (Ag) FCC nm atomic radii Mix 50% Ag + 50% Cu, gives two solid phases (  and  )  (saturated - mostly.

Thermal Equilibrium Diagrams Contain information about changes that take place in alloys.

Introduction to Materials Science, Chapter 9, Phase Diagrams University of Virginia, Dept. of Materials Science and Engineering 1 Growth of Solid Equilibrium.

The American University in Cairo Mechanical Engineering Department MENG 426: Metals, Alloys & Composites Interactive MENG 426 Lab Tutorials Experiment.

1 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.

Microstructure and Phase Transformations in Multicomponent Systems

Chapter ISSUES TO ADDRESS... When we mix two elements... what equilibrium state do we get? In particular, if we specify... --a composition (e.g.,

CHE 333 Class 3 Phase Diagrams.. Why Phases? Few materials used in pure state – gold, copper, platinum etc for electrical properties or coatings. Most.

Mechanical & Aerospace Engineering West Virginia University 9 – Phase Diagram (2) (Phase Reactions)

Phase Diagrams And Microstructure

Phase Diagrams melting / production process / alloying (strength, Tm...) heat treatment microstructure material properties system (e.g. Cu-Ni) components.

Chapter ISSUES TO ADDRESS... When we combine two elements... what is the resulting equilibrium state? In particular, if we specify the composition.

Chapter ISSUES TO ADDRESS... When we combine two __________... what is the resulting _____________state? In particular, if we specify the.

Phase Diagrams Continued

Metallic Materials-Phase Diagrams

Part 6 Chemistry Engineering Department 23/10/2013

PHASE DIAGRAMS ISSUES TO ADDRESS... • When we combine two elements...

Vadodara Institute of Engineering

Material Science & Metallurgy Non Equilibrium Cooling

CHAPTER 8 Phase Diagrams and Microstructure Development.

The Iron-Iron Carbide Phase Diagram

The Iron–Iron Carbide (Fe–Fe3C) Phase Diagram

Material Science and Metallurgy

Phase Diagrams 8-1.

Chapter 5 Phase Equilibria

Phase Diagrams–Equilibrium Microstructural Development

Chapter 9: Phase Diagrams

EX 1: Pb-Sn Eutectic System

Chapter 9: Phase Diagrams

Sr. no. Name Enrollment no. Roll no. 1 Jay sureja Hardik tanna 44

Chapter 11: Phase Diagrams

Introduction to Materials Science and Engineering

Visit for more Learning Resources

L.J Institute Of Engineering And Technology Iron Carbon Diagram Subject in charge :Mr Sudeep Kolhar/Mr. Dhruv Patel Sr .No Student Name Enrolment.

CHAPTER 9: Definitions A. Solid Solution

AHMEDABAD INSTITUTE OF TECHNOLOGY

Thermodynamics and Phase Diagrams

Commercial brasses are copper-rich copper-zinc alloys

Fully Miscible Solution

Commercial brasses are copper-rich copper-zinc alloys

Chapter 10: Phase Diagrams

CHE 333 Class 5 Phase Diagrams. Prov08.

2/16/2019 9:54 PM Chapter 9 Phase Diagrams Dr. Mohammad Abuhaiba, PE.

Single solid phase binary alloy -1

CHAPTER 8 Phase Diagrams 1.

CHAPTER 8 Phase Diagrams 1.

CHAPTER 8 Phase Diagrams 1.

Working with Phase Diagrams

Eutectic Type Phase Diagrams

Chapter 10: Phase Diagrams

Iron – Iron Carbide Phase Diagram

Phase diagrams of pure substances

IE-114 Materials Science and General Chemistry Lecture-10

T l s Full solubility liquid Phase diagram solid g(n) Gibbs Energy

Mechanical Properties of Isomorphous Alloys

Presentation transcript:

Materials Engineering Lecture 6: Phase diagrams 2.

Phase composition change on cooling

Eutectic Binary Diagram While “moving” downwards along composition M, the solid

Binary Eutectic Systems (Cu-Ag) a-phase: FCC Ag + Cu solute; b-phase: FCC Cu + Ag solute; Solvus line: solid solubility limit; Eutectic (Eu): the composition having the lowest melting point. Eutectic reaction:

Invariant points in Phase Diagrams Points, for which even a slight change of composition of temperature in any direction causes a phase change, are referred to as invariant points. Invariant points are: Eutectic: on solidus, having the lowest melting temperature; Eutectoid: between two solid states; Peritectic: binary liquid “splits” into two different solid phases.

Phase Diagram with Intermediates: Pb-Mg To simplify the diagram, it can be cut into two separate diagrams along the vertical line of Mg2Pb. Then two eutectic systems are shown. The analysis is then much simpler.

Iron-Carbon Phase diagram 6.67 wt% of C = Fe3C (cementite). All practical iron alloys have < 6.67 wt% of C. Compositions richer in carbon are just solutions of cementite (mp = 1840ºC) in solid graphite (mp = 3650ºC)

Ternary phase diagram: Chromium-Nickel steel

Equilibrium cooling: Ni-Cu

Non-equilibrium cooling: Ni-Cu

Microstructure development: Pb-Sn alloy, equilibrium cooling

Microstructures of Pb-Sn alloys 20 wt% Sn 50 wt% Sn 62 wt% Sn 80 wt% Sn

Musts of this lecture Invariant points: eutectic, eutectoid, peritectic; Ternary diagrams; Equilibrium and non-equilibrium cooling. Development of Microstructure