Accession Number:

AD0645346

Title:

INVESTIGATION OF SOLIDIFICATION OF HIGH-STRENGTH STEEL CASTINGS

Descriptive Note:

Interim rept. 1 Oct 1964-30 Sep 1965

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF METALLURGY AND MATERIALS SCIENCE

Personal Author(s):

Report Date:

1965-09-30

Pagination or Media Count:

115.0

Abstract:

An analytical and experimental study has been made of microsegregation in dendritic solidification of ternary iron-carbon-chromium alloys. The most realistic model considered assumes uniform concentrations of carbon and chromium in the interdendritic liquid, equilibrium at the solid liquid interface, no diffusion of chromium in the solid, and a uniform concentration of carbon in the solid. Fundamental to the study of solute redistribution during solidification is detailed knowledge of the solid-liquid equilibria. For this reason the determination of the austenite-liquidus of the iron-carbon-chromium system was made which included evaluating the activity of iron, carbon, and chromium in the liquid iron and austenite as functions of temperature and composition.

Subject Categories:

  • Metallurgy and Metallography
  • Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE