CHAPTER 2
ATOMIC STRUCTURE AND INTERATOMIC BONDING
PROBLEM SOLUTIONS
2.7 The electron configurations of the ions are determined using Table 2.2. 2 2 6 2 6 6 - 1s 2s 2p 3s 3p 3d 3+ 2 2 6 2 6 5 Fe - 1s 2s 2p 3s 3p 3d + 2 2 6 2 6 10 Cu - 1s 2s 2p 3s 3p 3d 2+
Chapter 7
Dislocations and Strengthening Mechanisms
Why study deformation and strengthening mechanisms?
Metal alloys can be made harder, and less ductile by plastic or permanent deformation, via dislocation strengthening mechanisms. A given design applica
Chapter 8 Failure
Why study Failure?
Design of a structure should be done with a damage tolerance design concept that is a design engineer assumes that there is a certain amount of damage tolerable or flaws present in the structure and they also ass
Chapter 10
Phase transformations
A photomicrograph of pearlite steel that has partially transformed to spheroidite.
Why study phase transformations?
Metal-alloys are heat treated to obtain desirable mechanical properties. When they are heat treated, their
Chapter 9
Phase Diagrams
Phase Diagrams
Binary Isomorphous Systems Binary Eutectic Systems
Why study phase diagrams?
Metal alloys are heat treated to obtain optimum properties. Phase diagrams are road maps for heat treatment. By knowing what phase (a soft
CHAPTER 16 COMPOSITES
Why Study Composites?
With
a knowledge of the various types of composites, as well as an understanding of the dependence of their behaviors on the characteristics, relative amounts, geometry/distribution, and properties of the con
Wichita State University
ME 250: Materials Engineering
Summer 2004
M W 4:10 5:25 PM Instructor: Christian Widener christian@niar.wichita.edu
Prerequisites: CHEM 111Q & MATH 242Q Description: An Introduction to engineering materials science. Textbook: Mate
Mechanical Properties
Chapter 6
Why Study Mechanical Properties ?
As engineers we need to know the mechanical properties of materials in order to choose the right material for a given application. If we know how these properties are measured, we can als
Diffusion
Chapter 5
Why study diffusion?
Diffusion of atoms is necessary to have better bonding in lot of different types of material processing. Example: aircraft landing gears and gold plated jewelry. In gold plated jewelry, Au atoms have to diffuse thr
CHAPTER 2
ATOMIC STRUCTURE AND INTERATOMIC BONDING PROBLEM SOLUTIONS 2.7 The electron configurations of the ions are determined using Table 2.2. 2+ 2 2 6 2 6 6 Fe - 1s 2s 2p 3s 3p 3d 3+ 2 2 6 2 6 5 Fe - 1s 2s 2p 3s 3p 3d + 2 2 6 2 6 10 Cu - 1s 2s 2p 3s 3p
CHAPTER 5
DIFFUSION
PROBLEM SOLUTIONS 3 5.7 We are asked to determine the position at which the nitrogen concentration is 2 kg/m . This problem is solved by using Equation (5.3) in the form C - CB J = - D A xA - xB 3 If we take C to be the point at which
CHAPTER 5
DIFFUSION
PROBLEM SOLUTIONS 3 5.7 We are asked to determine the position at which the nitrogen concentration is 2 kg/m . This problem is solved by using Equation (5.3) in the form
C - C B J = - D A x - x
A B
3 If we take C to be the point at whi
CHAPTER 8
FAILURE
PROBLEM SOLUTIONS
8.3 This problem asks that we compute the magnitude of the maximum stress that exists at the tip of an internal crack. Equation (8.1) is employed to solve this problem, as a m = 2 o t 2.5 x 10 -2 mm 2 = (2)(170 MPa) -4
CHAPTER 8
FAILURE
PROBLEM SOLUTIONS
8.3 This problem asks that we compute the magnitude of the maximum stress that exists at the tip of an internal crack. Equation (8.1) is employed to solve this problem, as
a m = 2 o t
2.5 x 10 -2 mm 2 = (2)(170 MPa) 2
Chapter 2
Atomic Structure and Interatomic Bonding
2.2 Fundemental Concepts
Atoms are composed of positively charged protons, neutrons, and negatively charged electrons. A complete atom is electrically neutral, having the same number of protons as electro
Chapter 3
The Structure of Crystalline Solids
Why study the structures of crystalline solids?
The properties of materials are directly related to their structures. Example: Aircraft skin is made of Al but not of Mg both being light metals. The crystals st
CHAPTER 4
Imperfections in solids
Types of Crystallographic Defects
Vacancy and Interstitial Defects Substitutional and Interstitial Impurities Edge and Screw Dislocations Grain Boundaries
WHY STUDY IMPERFECTIONS IN SOLIDS?
Dislocations are e
Chapter 8 Two-Level Fractional Factorials (cont.)
Complementary Half-Fraction: In Example 8-1, a 24-1 Fraction was constructed using the generator; I = ABCD This is called the principal fraction. An alternate (complementary) one-half can be constructed us