Accession Number : ADA130980

Title :   Microstructure and Properties of P/M Tool Steels.

Descriptive Note : Technical rept.,

Corporate Author : DREXEL UNIV PHILADELPHIA PA DEPT OF MATERIALS ENGINEERING

Personal Author(s) : Kumar,S ; Fareed,A ; Koczak,M J ; Lawley,A

PDF Url : ADA130980

Report Date : Jun 1983

Pagination or Media Count : 29

Abstract : A detailed microstructural examination has been made of T15 and Tex 25 high speed tool steels processed from rapidly solidified gas atomized powders, and associated strength and toughness evaluated. Powders were screened into selected size fractions, hot isostatically pressed to full density and heat-treated. Two HIPing temperatures, two austenitizing temperatures and three tempering temperatures were included in the study. Atomized and consolidated materials were characterized utilizing x-ray diffraction, optical and scanning electron microscopy. Both cellular and dendritic structures are present in the atomized powders depending on particle size, with MC carbides primarily at cell boundaries.

Descriptors :   *X ray diffraction, *Steel, *Powder metallurgy, *Mechanical properties, Microstructure, Heat treatment, Atomization, Solidification, Quick reaction, Isostatic pressing, Hot pressing, Austenite, Toughness, Strength(Mechanics), Powders, Density, High velocity, Tools

Subject Categories : Physical Chemistry
      Properties of Metals and Alloys
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE