Landolt-Börnstein - Group VIII Advanced Materials and Technologies

Hot isostatically pressed tool steels: heat treatment, alloying effects, chemical composition

Abstract

This chapter focuses on hot isostatically pressed tool steels. The powders for HIP tool steels are nitrogen atomized from melts containing all alloying elements including carbon. Heat treatment cycle for high alloy precipitation hardening tool steels comprising three holding times during preheating, salt bath quenching, and triple tempering, as well as the amount of undissolved carbides in HS6-5-2 as a function on austenitizing temperature and annealing condition are illustrated. The temperature dependence of the alloy content of the austenitic matrix and also the effect of austenitizing temperature on the as-quenched hardness of HS6-5-2 with 0.8 to 0.95 % C and retained austenite content with various carbon contents are illustrated. Tempering response after quenching of HS6-5-2 with carbon contents of 0.83 to 0.98 % for lower austenitizing temperatures, isothermal softening of HS6-5-2 after quenching from 1200 to 1220 ºC at three different temperatures and the effect of vanadium in tool steels on the volume fraction of undissolved MC carbides after heat treatment are illustrated. EDX mapping of the element distribution in the microstructural constituents of heat treated high speed steel is shown. Chemical compositions of HIP high speed steels, HIP cold working tool steels and HIP corrosion resistant tool steels are tabulated.

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Title
Hot isostatically pressed tool steels: heat treatment, alloying effects, chemical composition
Book Title
Powder Metallurgy Data
In
4 Semifinished products
Book DOI
10.1007/b88278
Chapter DOI
10.1007/10689123_11
Part of
Landolt-Börnstein - Group VIII Advanced Materials and Technologies
Volume
2A1
Editors
  • P. Beiss Send Email (11)
  • R. Ruthardt Send Email (12)
  • H. Warlimont Send Email (13)
  • Editor Affiliation
  • 11 Professur und Institut für Werkstoffkunde, Rheinisch Westfälische Technische Hochschule (RWTH) Aachen, 52062, Aachen, Germany
  • 12 Aussenstelle Hanau, Deutsche Gesellschaft für Materialkunde e.V., Adalbert-Stifter-Str. 19, 63452, Hanau, Germany
  • 13 Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, 01069, Dresden, Germany
  • Authors
  • P. Beiss Send Email (101)
  • G. Kientopf Send Email (110)
  • Author Affiliation
  • 101 Professur und Institut für Werkstoffkunde, Rheinisch Westfälische Technische Hochschule (RWTH) Aachen, 52062, Aachen, Germany
  • 110 Böhler-Uddeholm Deutschland GmbH, Hansaallee 321, 40549, Düsseldorf, Germany
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