THE INFLUENCE OF MECHANICAL FIBERING ON BRITTLE FRACTURE IN HOT-ROLLED STEEL PLATE

Several factors are involved in the formation of fissures on a microscale: the presence of finely dispersed fiber elements, plastic strain, and a stress normal to any plane in which the fiber is aligned. The strain and stress factors were found to different degrees in the various tests, so that the contribution of the extragrain-size effect to transition temperature depended on the test employed and the criterion for transition. A classification was suggested from van der Veen notched slow-bend, to Charpy V-notch, to pure tensile loading, on the basis of decreasing tendency to promote fissuring at transition. Using the van der Veen test and 32-mm fibrous criterion, the transition temperature for controlled-rolled plate is lowered for reasons other than grain refinement by 10-15 C, or 2-3 times that when the temperature is taken at the Charpy V-notch 15 ft-lb level. (Author)

• Corporate Authors:

  Massachusetts Institute of Technology

  Center for Transportation Studies, Room 1121
  Cambridge, MA  United States  02139
• Authors:
  • Kapadia, B M
  • English, A T
  • Backofen, W A
• Publication Date: 1961-12-1

Media Info

• Pagination: 25 p.

Subject/Index Terms

• TRT Terms: Brittleness; Fibers; Fracture mechanics; Metallurgy; Plates (Engineering); Steel; Steel plates; Transition point
• Identifier Terms: Ship Structure Committee
• Old TRIS Terms: Fiber metallurgy; Metal plates; Ship plates
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00327725
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SSC-138, No. 2
• Contract Numbers: NOBS-72386, NOBS-84321
• Files: TRIS
• Created Date: Feb 18 1981 12:00AM