Accession Number:

ADA172891

Title:

Mechanical Property Characterization of VascoMax T-250.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB

Report Date:

1986-07-01

Pagination or Media Count:

29.0

Abstract:

This report addresses a mechanical property characterization of VascoMax T-250 in the form of a 3-inch-diameter forged bar. Data were generated for aging temperatures of 850, 900, and 950 F and for aging times of 3, 4, 8 hours. Parameters addressed were hardness, tensile properties, Charpy V-notch impact energy and fracture toughness. Microstructural aspects were also addressed. Results indicate that for the heat treatments investigated the tensile strength increases with increasing aging temperature and time. Fracture toughness k sub IQ increases with aging temperature, and Charpy energy is the highest in the 950 F aged condition. Based on these findings the 950 F aging temperature results in the maximum tensile strength and toughness properties for the material in 3-inch-diameter bar form. Discrepancies in some of the tensile strength data and tensile fracture appearances are attributed to exogenous inclusions peculiar to this heat.

Subject Categories:

  • Properties of Metals and Alloys
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE