Accession Number : ADA292261

Title :   Application of a Rapid Quench Thermomagnetic Analyzer to Austempered Ductile Iron.

Descriptive Note : Final technical rept.,

Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Personal Author(s) : Cote, P. J. ; Hickey, T. ; Witherell, M. D.

PDF Url : ADA292261

Report Date : NOV 1994

Pagination or Media Count : 20

Abstract : A thermormagnetic analyzer was fabricated to provide in-situ monitoring of isothermal decompositions of austenite in steels and related alloys. The analyzer provides a convenient and rapid means for establishing time-temperature-transformation characteristics of a ferrous alloy by cycling a given specimen through a series of thermal treatments and monitoring the transformations magnetically. The present report describes the apparatus and gives results on the transformation characteristics of austempered ductile iron (ADI). This analyzer was also used to investigate alternative processing procedures; the results indicate that an improved heat treatment is available for large ADI components. jg

Descriptors :   *STEEL, *QUENCHING, *IRON ALLOYS, *DUCTILITY, *ANALYZERS, THERMAL PROPERTIES, MAGNETIC PROPERTIES, MONITORING, PROCESSING, ALLOYS, CYCLES, AUSTENITE, HEAT TREATMENT, DECOMPOSITION, ISOTHERMS, TRANSFORMATIONS.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Metallurgy and Metallography
      Electricity and Magnetism
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE