Powder Metallurgy Technology (Selected Articles)

Abstract

This paper studies the effect of various pre-HIP heating, isostatic pressure heat treatment on the size and distribution of prior particle boundary (PPB) carbide precipitates, volume fraction and grain size of HIP billets of Rene 95 P/M powder metallurgy alloy. The possibility of reducing the PPB carbide segregation by using pre-HIP heat treatment was explored. The results show that pre-HIP treatment can reduce the degree of PPB carbide segregation, increase the volume fraction, but leave grain size unchanged. This is due mainly to the improvement of pre-HIP powder surface state and the precipitating environment of carbides on PPB.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 11, 1991
Accession Number
ADA237176

Entities

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Crystal Structure
  • Crystals
  • Cubic Lattices
  • Electron Microscopes
  • Energy Bands
  • Heat Energy
  • Heat Resistant Alloys
  • Heat Treatment
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Working
  • Solid Solutions
  • Turbines

Readers

  • Powder metallurgy of Titanium alloys.