Titanium Carbides as a Cause of Knife-Line Corrosion,

Abstract

1Kh18N9T (0.08 percent C, 1.18 percent Mn, 18.24 percent Cr, 9.25 percent Ni, 0.21 percent Mo, 0.80 percent Ti) steel was subjected to microscopic and x-ray examination to determine the effect of titanium carbide on knife-line corrosion. By structural analysis of overheated titanium-stabilized steels and by oxidation of titanium carbides at potentials corresponding to the corrosion of these steels in nitric acid, it was shown that the dendritic titanium carbides precipitated in grain boundaries after overheating are one of the main causes of knife-line corrosion. Heat-treatment to eliminate the knife-line corrosion had only limited effect.

Document Details

Document Type
Technical Report
Publication Date
Dec 03, 1968
Accession Number
AD0857643

Entities

People

  • I. Kasova
  • N. Lehka
  • V. Cihal
  • V. Masarik

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Acids
  • Boundaries
  • Ceramic Materials
  • Corrosion
  • Czechoslovakia
  • Grain Boundaries
  • Heat Treatment
  • Nitric Acid
  • Oxidation
  • Structural Analysis
  • Titanium
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.