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  United States  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

• TRT Terms: Aging (Materials); Chemical composition; Crash tests; Filtration; Mechanical properties; Metal heating; Metals; Steel; Steel pipe; Stress relieving; Temperature; Tensile properties; Toughness
• Uncontrolled Terms: Heat treatment
• Geographic Terms: Arctic Regions
• Old TRIS Terms: Arctic area
• Subject Areas: Bridges and other structures; Highways; Research;

Filing Info

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