A STUDY OF GRAIN MORPHOLOGY IN ULTRAFINE GRAIN SIZE METALS AND ALLOYS

Grain morphologies, as defined by the rigorous techniques of quantitative microscopy, were investigated for ultrafine grain size 1010 modified steel and titanium alloys. Microstructures were defined by optical, transmission electron, and scanning electron microscopy techniques. Dihedral angles around three grain triple points, sides per grain, mean grain intercepts, grains per unit area, homogeneity of microstructure and hardness were investigated as a function of processing history. The microstructural characteristics undergo a fundamental change as the mean grain intercept is reduced to submicron dimensions.

• Corporate Authors:

  Army Materials and Mechanics Research Center

  Watertown, MA  United States  02172
• Authors:
  • Lemons, J E
• Publication Date: 1972-7

Media Info

• Features: References;
• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Electron microscopy; Grain size (Geology); Metallography; Titanium alloys
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00035994
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: D/A IT062105A328 Final Rpt
• Contract Numbers: DAAG-46-71-C-0174
• Files: TRIS
• Created Date: Oct 20 1973 12:00AM