EFFECTS OF STRAINING, AGING, AND STRESS-RELIVING ON MECHANICAL PROPERTIES OF STEELS FOR ARCTIC SERVICE

The effects of straining, straining plus aging, and straining plus aging plus stress-relieving on tensile and Charpy V-notch impact properties were determined for several candidate artic pipe and fitting steels. Possible compositional and processing means to maintain high as-rolled energy levels in strained plus aged pipe are discussed. Heat treatment of 787 and Mn-Mo-Cb, as would be necessary in fittings, increased toughness to the level that degradation due to straining plus aging was readily accommodated even at -80 F (-62 C) test temperatures. For fittings designed to -20 F (-29 C) or higher service temperatures, Armco VNT-AT with restricted carbon content and sulfide shape control provided adequate toughness in the strained plus aged conditions. After stress-relieving, the impact properties improved enough to allow use of this grade at -80 F (-62 C). /AUTHOR/

  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  USA  10016-5990
  • Authors:
    • Jesseman, R J
    • Smith, R C
  • Publication Date: 1975-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 408-416
  • Serial:
    • ASME Transactions
    • Volume: 97B
    • Issue Number: 2
    • Publisher: American Society of Mechanical Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00097627
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 29 1975 12:00AM