Forging of Powder Metallurgy Gears

Abstract

The objective of this program was to produce a very near-net shape spur gear by isothermal forging of a powder metallurgy 4600 grade preform. Die fill and densification on test coupons were complete at a forging temperature of 1650F (900C), pressure of 10 tsi (140 MPa) with a dwell time of 15 min. Materials processed in this manner exhibited toughness and ductility, comparable to that in cast/wrought material. Composite performs consisting of a P/M gear and a wrought shaft were cold isostatically pressed and sintered. Forging dies were EDM in cast IN-100 blocks. During the forging trials, however, serious problems of lubrication and die release were encountered. As a consequence, no successful forgings were produced.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA095556

Entities

People

  • B. Lynn Ferguson
  • Don T. Ostberg

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Fabrication
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Powder Metallurgy
  • Tensile Properties
  • Tensile Strength
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Powder metallurgy of Titanium alloys.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).