Program to Develop High Strength Aluminum Powder Metallurgy Products. Phase IV. Scale up to 3200 lb. Billets.

Abstract

Preheating with Ar or no gas flow followed by evacuation and vacuum hot pressing gave P/M wrought products with high fracture toughness only when the vacuum can temperature was maintained above 800F. Vacuum preheating and vacuum hot pressing imparted high toughness in P/M wrought products for can temperatures from 600F to 820F. MA87 extrusions from compacts preheated below the alloy solidus gave higher transverse fracture toughness than earlier extrusions preheated above the solidus temperature.

Document Details

Document Type
Technical Report
Publication Date
Apr 26, 1974
Accession Number
AD0780455

Entities

People

  • W. S. Cebulak

Organizations

  • Alcoa

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Evacuation
  • Extrusion
  • Fabrication
  • Flow
  • Gas Flow
  • Hot Pressing
  • Hot Working
  • Material Forming Processes
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Powder Metallurgy
  • Pressing (Forming)
  • Toughness

Fields of Study

  • Materials science

Readers

  • Metallurgy