ULTRAFINE GRAIN SIZE EFFECTS ON CORROSION BEHAVIOR

The corrosion behavior of copper alloy (1.0 Cr-0.10 Cb-0.075 Ti) in grain size range (1.45 to 12.3 Mn) and 1010 carbon steel (1.0 Cb-0.60 Mn) in grain size range (0.92 to 77.0 Microns) has been investigated by means of anodic polarization measurements. Based on the anodic polarization measurements, a model is proposed which relates grain size to the critical current density/grain boundary length in one square centimeter. The model indicates that as grain size increases the apparent grain boundary current will increase and suggests finer grain size alloys will be more corrosion resistant and have longer periods of crack incubation. Selected metallographic studies and potential-time measurements were made.

• Corporate Authors:

  Army Materials and Mechanics Research Center

  Watertown, MA  United States  02172
• Authors:
  • Zabielski, C V
  • Levy, M
• Publication Date: 1971-9

Media Info

• Features: References;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Anodic polarization; Corrosion resistance; Grain size (Geology); Stress corrosion; Stress cracking; Stresses
• Old TRIS Terms: Corrosion cracking
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00032217
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: AMMRC 71-35
• Files: TRIS
• Created Date: Apr 21 1972 12:00AM