Optimum Microstructures for SPF (Superplastic Forming) Using Hydrovac

Abstract

The effects of the addition of up to 1.0 wt% hydrogen as a transient alloying element on the mechanical properties, superplastic forming (SPF), and diffusion bonding (DB) of fine-grained equiaxed Ti-6Al-4V and duplex-annealed Ti-6Al-2Sn-4Zr-2Mo were determined. The results of a systematic study of the beneficial effects of hydrogen on superplasticity and tensile and creep properties of Ti alloys are presented in this report. The microstructural refinement and properly improvement affected by the heat treatment of Ti alloys containing hydrogen and the effects of internal hydrogen on the superplastic forming and diffusion bonding of ti alloys were determined.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1983
Accession Number
ADA130944

Entities

People

  • J. E. O'neal
  • R. J. Lederich
  • S. M. Sastry

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Biaxial Stresses
  • Chemical Analysis
  • Chemistry
  • Creep
  • Grain Growth
  • Grain Size
  • Heat Treatment
  • High Temperature
  • Materials
  • Mechanical Properties
  • Molecular Orbital Theory
  • Partial Pressure
  • Phase Transformations
  • Tensile Properties
  • Tensile Strength
  • Tensile Stress
  • Test And Evaluation

Fields of Study

  • Materials science

Readers

  • Metallurgy