Accession Number:

ADA022276

Title:

Effect of Dissolved Hydrogen on Mechanical Behavior of Metals.

Descriptive Note:

Technical rept.,

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF METALLURGY AND MATERIALS SCIENCE

Report Date:

1976-02-01

Pagination or Media Count:

35.0

Abstract:

The effect of internal, or dissolved hydrogen on mechanical behavior of metals is reviewed. If a supersaturation is produced, internal cracks or blisters result. The extent and nature of cracking are shown to be related to both composition and heat treatment. Effects of hydrogen on brittle and ductile fracture are discussed. The occurrence of these phenomena depends on the intrinsic crack resistance of the lattice and of interfaces, the noxious and innocuous interaction of hydrogen with traps, such as particles and clusters, and the relative mobility of dissolved hydrogen. While each of these are amenable to control, this cannot be successfully achieved without a careful characterization of the interaction between internal hydrogen and metallurgical variables. Author

Subject Categories:

  • Physical Chemistry
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE