MATERIAL SCIENCE Module I Structure of Metals

REFERENCES

Academic Program for Nuclear Power Plant Personnel,Volume III, Columbia, MD, General Physics Corporation, Library of Congress Card #A 326517, 1982.

Foster and Wright, Basic Nuclear Engineering, Fourth Edition, Allyn and Bacon, Inc., 1983.

Glasstone and Sesonske, Nuclear Reactor Engineering,Third Edition, Van Nostrand Reinhold Company, 1981.

Metcalfe, Williams, and Castka, Modern Chemistry,Holt, Rinehart, and Winston, New York, NY, 1982.

Reactor Plant Materials,General Physics Corporation, Columbia Maryland, 1982.

Savannah River Site, Material Science Course,CS-CRO-IT-FUND-10, Rev. 0, 1991.

Tweeddale, J.G., The Mechanical Properties of Metals Assessment and Significance,American Elsevier Publishing Company, 1964.

Weisman, Elements of Nuclear Reactor Design,Elsevier Scientific Publishing Company, 1983.

TERMINAL OBJECTIVE

1.0 Without references, DESCRIBE the bonding and patterns that effect the structure of a metal.

ENABLING OBJECTIVES

1.1 STATE the five types of bonding that occur in materials and their characteristics.

1.2 DEFINE the following terms:

a. Crystal structure

b. Body-centered cubic structure

c. Face-centered cubic structure

d. Hexagonal close-packed structure

1.3 STATE the three lattice-type structures in metals.

1.4 Given a description or drawing, DISTINGUISH between the three most common types of crystalline structures.

1.5 IDENTIFY the crystalline structure possessed by a metal.

1.6 DEFINE the following terms:

a. Grain

b. Grain structure

c. Grain boundary

d. Creep

1.7 DEFINE the term polymorphism.

1.8 IDENTIFY the ranges and names for the polymorphism phases associated with uranium metal.

1.9 IDENTIFY the polymorphism phase that prevents pure uranium from being used as fuel.

1.10 DEFINE the term alloy.

1.11 DESCRIBE an alloy as to the three possible microstructures and the two general characteristics as compared to pure metals.

1.12 IDENTIFY the two desirable properties of type 304 stainless steel.

1.13 IDENTIFY the three types of microscopic imperfections found in crystalline structures.

1.14 STATE how slip occurs in crystals.

1.15 IDENTIFY the four types of bulk defects.

BONDING

The arrangement of atoms in a material determines the behavior and properties of that material. Most of the materials used in the construction of a nuclear reactor facility are metals. In this chapter, we will discuss the various types of bonding that occurs in material selected for use in a reactor facility. The Chemistry Handbook discusses the bonding types in more detail.

EO 1.1STATE the five types of bonding that occur in materials and their characteristics.