Texture and Yield Stress of Pre-Strained 304L Stainless Steel

Conference · Mon Jun 23 04:00:00 EDT 1997

OSTI ID:762581

Bennett, K ^[1]; Von Dreele, B; Gray, III, G T; Chen, S R

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1. Los Alamos National Laboratory

The evolution of texture and yield stress in 304L stainless steel is investigated as a function of deformation to large plastic strains. Steel bars quasi-statically upset forged at a strain rate of 0.001s{sup -1} to true strains of 0, 0.5, 1.0 and 1.8 were found to acquire their texture ({approximately}3.0 m.r.d.) in the first 0.5 strain with (110) poles highly aligned parallel to the compression direction independent of whether the pre-forged starting material was in a cold worked or annealed (1050 C for 1 hour) condition. The same bars, when strained at room temperature show an incremental yield with pre-strain regardless of strain rate (10{sup -1} or 10{sup -3}s{sup -1}) or thermal history, though annealed bars yield at slightly lower stresses. At 77 K and strain rate 10{sup -3}s{sup -1}, the annealed 304L exhibits more pronounced strain-hardening behavior than the 304L forged in a cold-worked condition.

• Research Organization: Los Alamos National Lab., NM (US)
• Sponsoring Organization: USDOE Office of Defense Programs (DP) (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 762581
• Report Number(s): LA-UR-99-2245
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NEUTRONS
STAINLESS STEELS
STEELS
STRAIN HARDENING
STRAIN RATE
STRESS ANALYSIS
TEXTURE