Tham khảo tài liệu 'material science_ vol 2 of 2 - us doe (1993) episode 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | DOE-HDBK-1017 2-93 PROPERTIES CONSIDERED WHEN SELECTING MATERIALS Plant Materials PROPERTIES CONSIDERED WHEN SELECTING MATERIALS There are many different kinds of materials used in the construction of a nuclear facility. Once constructed these materials are subjected to environments and operating conditions that may lead to material problems. This chapter discusses considerations for selection and application of plant materials. EO DEFINE the following terms a. Machinability c. b. Formability d. Stability Fabricability EO IDENTIFY the importance of application in a reactor plant. a material property and its Overview During the selection and application of materials used for construction of a nuclear facility many different material properties and factors must be considered depending upon the requirements for each specific application. Generally these consist of both non-fuel reactor materials used for structural and component construction and fuel materials. This chapter discusses some of the considerations used in the selection process for plant materials including material properties fuel fuel cladding reflector material control materials and shielding materials. Material Properties The following properties are considered when selecting materials that are to be used in the construction of nuclear facilities. Machinability Components may be formed by removing metal chips by mechanical deformation. This process is referred to as machining. Machinability describes how a metal reacts to mechanical deformation by removing chips with respect to the amount of metal effectively removed and the surface finish attainable. The mechanical properties of the metal will be the factors that influence the machinability of a metal. Many components used in nuclear reactor construction use machined parts that require very close tolerances and very smooth surfaces. Thus machinability becomes an important consideration when choosing materials for manufacturing these parts. .
