Accession Number : AD0738496
Title : Twinning in Niobium, a Continuous Nucleation Theory.
Descriptive Note : Final technical rept. 1 Feb-31 Jan 72,
Corporate Author : WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA RESEARCH AND DEVELOPMENT CENTER
Personal Author(s) : Shaw,B. J.
Report Date : 01 MAR 1972
Pagination or Media Count : 33
Abstract : The energy required to form a twin in Nb has been experimentally determined to be of the order 1 billion ergs/cc. This high energy has been explained in terms of a continuous nucleation theory which also accounts for the observed morphology of twins in B.C.C. transition metals and the heat evolved in the process. (Author)
Descriptors : (*TWINNING(CRYSTALLOGRAPHY), NIOBIUM), SINGLE CRYSTALS, NUCLEATION, ENERGY, DISLOCATIONS, MECHANICAL PROPERTIES, GRAIN STRUCTURES(METALLURGY)
Subject Categories : Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE