Accession Number : AD0698659

Title :   DIFFERENCES IN THE LOADIBILITY OF HEAVY PLATES RESULTING FROM ANISOTROPY,

Corporate Author : NAVAL SCIENTIFIC AND TECHNICAL INFORMATION CENTRE ORPINGTON (ENGLAND)

Personal Author(s) : Born,K. ; Lauprecht,W.

Report Date : SEP 1969

Pagination or Media Count : 30

Abstract : Heavy plates of normalized and heat-treated structural steels were tested for their mechanical properties, primarily on the basis of tensility and notch impact resistivity, the test pieces being taken longitudinally and transversely to the rolling direction and vertically to the rolling surface. The experimentation embraced a heavy plate of rust and acid proof austenitic steel, partially forged, multilayer submerged-arc and manual electric welds as well as forged ingots from an experimental melt. The last-named steels were primarily aimed at discovering the cause of anisotropy. The results showed that the main effect on the variation in the respective mechanical properties of samples taken in the three test directions was from the manganese sulphide exudation present in technical steels. This effect was expressed particularly in the results from aluminiferous fine-grain steels. Agglomerations of manganese silicate in coarse-grain steels may also be a contributory factor. Local anisotropy may also result from exogenous impurities. Despite low sulphur content and good supersonic results, samples from steels whose aluminum content exceeded 0.02% produced unsatisfactory values for plasticity and notch resistivity vertical to the rolling surface. (Author)

Descriptors :   (*METAL PLATES, *LOADS(FORCES)), STEEL, ANISOTROPY, MECHANICAL PROPERTIES, WELDS, WEST GERMANY

Subject Categories : Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE