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Unformatted text preview: Department of Materials Science and Engineering MSE 200 SPRING 2008 MECHANICAL PROPERTIES OF STRUCTURAL MATERIALS SECTION 001: TH 10:1511:30 IN COX 206 SECTION 002: TH 11:4501:00 IN COX 206 SECTION 003: MWF 3:004:15 IN COX 206 Problem Session: H 4:507:15 in Willams 2215 Instructor: Dr. Nadia ElMasry Office: 3074C Engineering Building I (EB I) Phone: 5152970 Email: elmasry@ncsu.edu Office Hours: TBA Instructor: Dr. Y. Zhu Office: Engineering Building I (EB I) Phone: 515 Email: Office Hours: TBA Instructor: Dr. Mike Rigsbee Office: 3010 Engineering Building I (EB I) Phone: 5153568 Email: mike_rigsbee@ncsu.edu Office Hours: By Appointment. Instructor: (TA, section 001, 002, 003) Office: Engineering Building I Phone: 515 Email: Office Hours: TBA TEXTBOOK: Foundations of Materials Science and Engineering, 4th Edition by William F. Smith THE COURSE CONSISTS of a lecture series (MSE 200) and a problem session (MSE 200P). MSE 200 is an introduction to the fundamentals which give rise to the wide spectrum of materials of practical use to engineers, with emphasis on their mechanical behavior. The topics covered in this course are extensive, and many new terms and concepts will be presented. You are expected to learn terminology, be able to present concepts and relationships graphically, and apply your knowledge to solve a variety of simple numerical problems. You must have the fourth edition of the textbook. There will be several supplements to the textbook. The test will cover the assigned sections as well as supplemental materials and homework/example problems. Students will be responsible for all and only materials covered in class. The schedule for lectures and test dates are on the attached MSE 200 schedule page. MSE 200P is a problem session scheduled from 4:50 p.m. to 7:15 p.m. every Thursday in Williams 2215. In these sessions homework problems will be discussed and there will be ample opportunity for students to ask questions on these and other problems as well as on lecture materials. These sessions may also be used for demonstrations and other visual aids illustrating various concepts in materials science and engineering. Attendance for these sessions is not required but is highly recommended. SCHEDULED TESTS A total of four inclass tests (including the final exam) are given throughout the semester as per the course schedule. The final exam is not comprehensive. Problems covered on the test will be similar to homework problems and questions, and example problems in the textbook. You 1 MUST bring your student ID to all exams to be verified. All exams are closed book. University policy on makeup tests will be strictly enforced. HOMEWORK PROBLEMS PROBLEMS will be assigned from the textbook and other sources. You are not required to turn in homework. The homework problems are a critical part of the course and reflect the expectation of your understanding the materials. Apart from the problems sessions the homework problem solutions will be posted on the MSE 200 website. DISCLAIMER Information in the syllabus is subject to minor changes and the possession of it does not ensure the you have all the correct information required to successfully complete the semester. Announcements of changes will be made and students are responsible for obtaining additional information by attending class. 2 SCHEDULE OF LECTURES (SECTION 001 DR. ELMASRY) WEEK Day 1* 2 3 4 Feb 5 6 7 8 Feb Mar 9 10 11 April 12 13 14 15 Topics Covered and Tests Chapter Sec. 1.1 to 1.3 2.1 to 2.8 3.1 to 3.5 3.6 to 3.11 4.3 to 4.4 5.1 to 5.4 Jan 10 Introduction and atomic structures Jan 15 Atomic structure and bonding Jan 17 Crystal structure and crystal geometry Jan 22 Crystal structure and crystal geometry Jan 24 Crystal imperfections Jan 29 Diffusion Jan 31 Review 5th Feb 7 Test I (IN CLASS) COX 206 Mechanical Properties I 6.2 to 6.4 6.5 to 5.8 Handout I 7.1, 7.2 7.3, 7.4 Feb 12 Mechanical Properties I Feb 14 Mechanical Properties I Feb 19 Mechanical Properties II Feb 21 Mechanical Properties II Feb 26 Review 28th 3 7 Test II (IN CLASS) Cox 206 Spring Break (No classes) March 11 Phase Diagrams Mar 13 Phase Diagrams Mar 18 Phase Diagrams/Engineering Alloys Mar 20 Engineering Alloys Mar 25 Engineering Alloys Mar 27 Review 1st Test III (IN CLASS) COX 206 April 3 Polymeric Materials April 8 Polymeric Materials April 10 Ceramic Materials April 15 Ceramic Materials April 17 Composite Materials April 22 Composite Materials April 24 Review FINAL TEST ( According to the published NCSU exam schedule) 8.1 to 8.4 8.5 to 8.8 8.10, 8.11, 9.2 9.3 9.4, 9.5.1 10.1, 10.2, 10.4.1 to 10.4.4 10.9 to 10.11 11.1 to 10.3 11.6, 11.8 12.1 to 12.3 Handout III * Short week The final examination (Test IV) for section 001 is scheduled for, May 1st at (8:00 a.m. 11:00 a.m.) COX 206 3 ASSIGNED HOMEWORK PROBLEMS FROM TEXTBOOK Chapter 2: 1, 2, 5, 6, 9, 12, 15, 30 Chapter 3: 11, 12, 16, 18, 23, 31, 32, 34, 36, 38, 39, 40, 41, 43, 44, 49, 56, 72, 73, 76, 80, 91 Chapter 4: 21 Chapter 5: 3, 13, 16, 21, 22, 25 Chapter 6: 13, 14, 18, 23, 24, 25, 29, 46, 47, 48, 63, 65 Chapter 7: 19, 21, 22, 24, 31, 35, 36, 42, 47 Chapter 8: 8, 10, 15, 19, 26, 38 Chapter 9: 12, 13, 14, 15, 16, 25, 44, 52 Chapter 7: 1, 2, 6, 8, 9, 10, 15, 18, 20, 22 Chapter 10: 7, 8, 9, 14, 20, 26, 88 Chapter 11: 20, 21, 23, 24, 25, 26, 83 Additional homework problems covering supplemental materials will be assigned. 4 TOPICAL OUTLINE OF MSE 200 MECHANICAL PROPERTIES OF STRUCTURAL MATERIALS PART I Introduction: Materials and Engineering. Types of materials: metals, polymers, ceramics, composites, and electronic materials. Atomic structure and bonding: structure of the atom, atomic numbers and atomic masses. Electronic structure and electronic notations. Interatomic forces and energies. Types of atomic and molecular bonds: the ionic bond, the covalent bond, the metallic bond, and secondary bonds. Crystal structures and geometry: Crystal lattices and the unit cell. The principal metallic crystal structures: the bodycentered cubic, the facecentered cubic, and the hexagonal closepacked structures. Miller's indices of planes and directions in the cubic system. Atomic packing. Density calculation. Planar and linear atomic densities. Polymorphism. XRay diffraction and crystal structure analysis. Crystal imperfections and diffusion: Point defects, solid solutions, vacancies and interstilialcies, line defects (dislocations), Burger's vector, edge and screw dislocations. Grain boundaries and grain size. Metallography. Rate processes in solids, the activation energy. Atomic diffusion and diffusion mechanisms. Substitutional and interstitial diffusion. Steady state diffusion and Fick's first law. Transient diffusion and Fick's second law. Effect of temperature on diffusion rate. Industrial applications of diffusion. PART II Stresses and strains in solids. Normal and shear stresses. Elastic and plastic deformation. The tensile test and the engineering stressstrain diagrams. Young's modulus, the yield strength, the ultimate tensile strength, the percent elongation and percent reduction in area. True stress and true strain. Hardness and hardness testing. Plastic deformation single crystals. The slip mechanism and dislocations. Slip systems and the critical resolved shear stress. Schmidt's law. Twinning. Plastic deformation a polycrystalline metals. Effects of plastic deformation on the microstructure of metals. Effects of plastic deformation on the mechanical properties of metals. Cold work and strain hardening. Strengthening by solid solutions. Effect of heating on the microstructure and properties of coldworked metals. Recovery and crystallization. Hot work. Fracture of metals. Ductile and brittle fracture. Toughness and impact testing. Fracture toughness. Fatigue of metals. The S/N diagram. Mechanisms of fatigue. Stress raisers and stress concentration. Initiation and growth of fatigue cracks. Factors affecting fatigue behavior of metals. Fatigue life of uncracked components, high cycle fatigue and Basquin's law, low cycle fatigue and CoffinManson law. Miner's rule of fatigue life and cumulative fatigue damage. Fatigue under a combination of static and cyclic loading, the Goodman relationship. Fatigue in cracked components. Crack growth under cyclic loading and Paris's law. Fatigue life of cracked components. Creep and stress 5 rupture in metals. Stages of creep. Effect of stress and temperature on creep behavior. The LarsenMiller parameter. Stress relaxation. PART III Phase diagrams of pure substances (Unary systems). Gibb's phase rule of heterogeneous equilibrium. Binary Systems: Systems with unlimited solid solubility (isomorphous). The lever rule. Binary eutectic systems with no solid solubility and eutectic systems with limited solid solubility. Systems with compound and intermediate phases. Systems with peritectics. The invariant reactions, eutectics (and eutectoids) and peritectics (and peritectoids). Applications to typical binary phase diagrams. The IronCarbide diagram, the CopperZinc diagram and the AluminumCopper diagram. Heat treatment of eutectoid steel: The eutectoid reaction in the ironiron carbide system. The isothermal decomposition of austenite. The T.T.T. diagram. Formation pearlite and bainite. Decomposition of austenite on continuous cooling. Formation of martensite and the martensite lines. The structure of martensite. Annealing, quench hardening, and austempering. The hardness of martensite. Tempering of martensite. Heat treatment of noneutectoid plain carbon steel. T.T.T. diagrams of alloy steels. Hardenability of steel and the endquench test. The aluminumrich end of the AluminumCopper diagram. The process of precipitation (or Age) hardening and its application to the aluminumcopper alloys. Solution treatment, quenching and aging. Artificial (or forced) aging and overaging. The mechanism of precipitation hardening in Aluminum Copper alloys. Supersaturation, formation of GP zones, coherent and incoherent precipitates. PART IV Polymeric materials: Polymerization reactions. The degree of polymerization. Addition polymerization and copolymers. Condensation polarization. Structure of partly crystalline polymers. Stereoisomerism. Linear and network polymers. Examples of engineering thermoplastics and thermosets. Elastomers and vulcanization. Mechanical properties of polymeric materials in relation to structure. Stress relaxation. Ceramic materials: Ceramic crystal structures. Diamond and graphite. Structure of AX compounds: The cesium chloride structure, the sodium chloride structure, the silicon carbide structure. Structure of AX2 compounds, the calcium fluoride structure. The Perovskite (BaTiO3) structure. Silicate structures. The SiO4 tetrahedron. Transformation toughening. Glasses: The glass transition temperature. Structure of glass. Network formers, modifiers, and intermediates. Mechanical properties of glass. Strengthening of glasses by tempering and chemical treatment. Composite materials: Classification composites: particle and fiber reinforcement. Upper and lower bounds of composite material properties. Density of composites. Unidirectional and laminated fiber composites. Longitudinal and transverse Young's moduli of unidirectional fiber composites. Strength of fiber composites. Thermal expansion of composite materials 6 ...
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This note was uploaded on 03/20/2008 for the course MSE 200 taught by Professor Wholedepartment during the Spring '08 term at N.C. State.
 Spring '08
 wholedepartment
 Materials Science And Engineering

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