Superalloy Filler Metal Optimization.

Abstract

Pratt and Whitney Aircraft has conducted a two-phase program to optimize an age-hardenable nickel-base filler metal composition for hot-cracking-limited superalloy applications. The approach used was to characterize critical filler metal properties (e.g., melting behavior) and weldability behavior and to use these results to iteratively optimize a filler metal composition. Starting compositions were based on the best filler metals developed previously under AF Contract. In Phase I, an optimum filler metal composition was determined. In Phase II, the optimum composition was evaluated by welding actual hardware and by conducting mechanical property tests.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1978
Accession Number
ADA068450

Entities

People

  • D. W. Anderson
  • W. H. King

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Base Metal
  • Contracts
  • Crystal Structure
  • Electron Microscopes
  • Engine Components
  • Fabrication
  • Fusion Welding
  • Heat Treatment
  • Heating
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Plastic Explosives
  • Scanning Electron Microscopes
  • Welds

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Metallurgy