Manufacturing Method for Improved Forming of Boron Carbide.

Abstract

12 IN. X 12 IN. X 3/8 IN. THICKNESS WAS HOT PRESSED TO A DENSITY OF > 98% of theoretical by alloying additions at a temperature of 1750C and a pressure of 3500 psi. Chemical analysis reveals iron as the principal densification aid remaining in the hot pressed structure. Transverse rupture and elastic modulus tests were conducted on samples 1 3/4 in x 1/4 in. x .100 in. cut from a 12 in. x 12 in. tile. The data show the rupture strength decreasing from an average of 73.4 Ksi at room temperature to an average of 38.4 Ksi at 1400C. The elastic modulus decreases from 55.5 x 10 to the 6th power psi at room temperature to 35.5 x 10 to the 6th power psi at 1200C. Hardness measurements taken with a Knoop indenter (100 gm load) range from 2530 to 2670. (Author) Portions of this document are not fully legible.

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0763237

Entities

People

  • Thomas Vasilos

Tags

DTIC Thesaurus Topics

  • Boron Carbides
  • Carbides
  • Chemical Analysis
  • Hardness
  • Manufacturing
  • Measurement
  • Mechanical Properties
  • Modulus Of Elasticity
  • Physical Properties
  • Pressure Measurement
  • Thickness
  • Transverse

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Powder metallurgy of Titanium alloys.