Accession Number : AD0635478

Title :   DETERMINATION OF THE ISOTHERMAL TRANSFORMATION DIAGRAM FOR HIGH CARBON M-2 TOOL STEEL.

Corporate Author : BROWN UNIV PROVIDENCE R I DIV OF ENGINEERING

Personal Author(s) : Markowitz, L. M. ; Richman,M. H.

Report Date : JUL 1966

Pagination or Media Count : 14

Abstract : The isothermal transformation diagram for high carbon M-2 tool steel was determined for material austenitized at 2200F for 1 hour. The austenitic grain size was identified as ASTM No. 9 and there was 21 volume percent of undissolved carbides at the austenitizing temperature. The diagram was double-nosed with little transformation occurring between 700 and 1150F. The curve representing the start of precipitation of proeutectoid carbides is included on the isothermal transformation diagram and the M sub s temperature was found to be 420F. (Author)

Descriptors :   (*TOOL STEEL, TRANSFORMATIONS), METALLOGRAPHY, CARBON ALLOYS, GRAPHICS, TRANSITION TEMPERATURE, HARDNESS, HEAT TREATMENT, CARBIDES, AUSTENITE, BAINITE, MICROSTRUCTURE, PHASE STUDIES

Subject Categories : Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE