THE EFFECTS OF DYNAMIC STRAIN AGING ON THE MECHANICAL PROPERTIES OF SEVERAL HSLA (HIGH STRENGTH, LOW ALLOY) STEELS

Eight high strength, low alloy (HSLA) steels were dynamically strain aged in the temperature range 100 to 600 degrees C, with strains from 1.5% to 6% and strain rates from 1 x 10 to the -4 power to 2 x 10 to the -2 power. Subsequently, changes in tensile, notch impact, and fatigue properties were determined. The data indicate that in forming HSLA steels in the dynamic strain aging range, the temperature should be between about 250 and 400 degrees C; the higher end of the range is preferable. The strain rate is unimportant. A dual-phase manganese-molybdenum-columbium steel gave the best response to this treatment, and steels containing titanium the worst. At the forming temperature, yielding was continuous and the rate of work hardening was more rapid than at room temperature. The maximum strength at room temperature can be obtained by forming the part at a temperature slightly in excess of the temperature peak in elevated temperature flow stress.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Presented at SAE Congress and Exposition, Detroit, 26 February-2 March 1979. Research sponsored by American Iron and Steel Institute.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Yaker, J A
  • Li, C-C
  • Leslie, W C
• Publication Date: 1979

Media Info

• Features: References;
• Pagination: 19 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Dual phase steel; Fatigue strength; Forming; High strength steel; Low alloy steel; Material aging; Mechanical properties; Metals; Temperature; Tensile strength
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00394086
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-026 875U
• Files: HSL, USDOT
• Created Date: May 31 1985 12:00AM