CONTINUOUSLY ANNEALED HOT ROLLED DUAL PHASE STEEL (PROCESSING-PROPERTIES-APPLICATIONS)

A microalloyed steel is heated by continuous annealing and then quenched to produce a microstructure consisting of 75-85% by volume of ferrite with the remainder being predominantly martensite. The resulting steel is called "dual phase" because of its twin constituents--ferrite and martensite. The continuous annealing process is contrasted with the "as-rolled" process to demonstrate that the former is the preferred production means. The resulting basic properties are then discussed with the intention of maximizing their influence in applications where the important attributes are strength, fatigue life, and machinability. Eight years after its introduction in the United States, applications for dual phase steel are being matched to its unique properties. The components examined are bumpers, wheels, and several mechanical components.

• Supplemental Notes:
  • Twentieth FISITA Congress, (SAE P-143), The Automotive Future, Volume 3, Austria, 6-11 May 1984.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Riffe, W J
• Publication Date: 1984-5

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 3.176
• Serial:
  • Publication of: Society of Automotive Engineers, Incorporated
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Annealing; Dual phase steel; Properties of materials; Vehicle components
• Old TRIS Terms: Processing
• Subject Areas: Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00392562
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 845088, HS-037 459
• Files: HSL, USDOT
• Created Date: Feb 28 1985 12:00AM