Accession Number : ADA290880

Title :   Hot Explosive Consolidation of W-Ti Alloys.

Descriptive Note : Final rept. Oct 91-Apr 93,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Kecskes, Laszlo J. ; Hall, Ian W.

PDF Url : ADA290880

Report Date : JAN 1995

Pagination or Media Count : 74

Abstract : High density (98% T.D.) 95W-5Ti (wt.%) alloys have been fabricated by a hot explosive consolidation (HEC) technique. In the current procedure, a W+Ti powder compact is preheated by the heat released by a Ti+C exothermic combustion synthesis reaction and subsequently consolidated by pressure waves generated by the detonation of an explosive. The amount of explosive charge, sample configuration, and molar ratio of exothermic material to sample were found to affect the degree of consolidation. Auxiliary temperature measurements were performed to determine the precompaction thermal history of (be sample to obtain the optimum delay time for consolidation. As observed with scanning electron microscopy, the HEC microcomposites consist of W particles surrounded by a partially discontinuous Ti-rich matrix. Transmission electron microscopy was also used to further characterize the W/Ti interfacial region. The pertinent features of the technique as well as (hose of the product microstructures are discussed. (jg)

Descriptors :   *EXPLOSIVES, *TITANIUM ALLOYS, *TUNGSTEN ALLOYS, THERMAL PROPERTIES, MEASUREMENT, SCANNING ELECTRON MICROSCOPES, MICROSTRUCTURE, OPTIMIZATION, TEMPERATURE, SYNTHESIS, INTERFACES, MATERIALS, POWDERS, HIGH TEMPERATURE, EXPLOSIVE CHARGES, ELECTRON MICROSCOPY, TRANSMITTANCE, COMBUSTION, PARTICLES, HEATING, HIGH DENSITY, PRESSURE, DELAY, EXOTHERMIC REACTIONS, DEPLETED URANIUM, COMPACTING, MECHANICAL WAVES.

Subject Categories : Properties of Metals and Alloys
      Inorganic Chemistry
      Physical Chemistry
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE