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The influence of microstructure and mechanical properties on the machinability of martensitic and bainitic prehardened mould steels

In English

Författare

  • Harned Hoseiny
  • Berne Hogman
  • Hans-Olof Andren
  • Uta Klement
  • Jan-Eric Ståhl
  • Anders Thuvander

Summary, in English

The machinability of two prehardened mould steels, one continuously-cooled and one quenched and tempered, is compared in terms of cutting temperature, cutting force and tool life. Both materials have a hardness of similar to 40 HRC which is a typical hardness for prehardened mould steels. The results of machinability tests are related to mechanical properties and microstructural features, and the material removal rate is estimated for the materials. The continuously-cooled steel with bainitic structure shows higher machinability and possesses superior impact toughness and ductility compared to the quenched and tempered steel with martensitic structure. These properties are very important for plastic mould steels. The continuously-cooled bainitic steel also has the advantage of not requiring any costly quenching and tempering processes in connection with its production.

Publiceringsår

2013

Språk

Engelska

Sidor

748-761

Publikation/Tidskrift/Serie

International Journal of Materials Research

Volym

104

Issue

8

Dokumenttyp

Artikel i tidskrift

Förlag

Carl Hanser Verlag GmbH

Ämne

  • Materials Engineering

Nyckelord

  • Machinability
  • Microstructure
  • Prehardened mould steel
  • Mechanical
  • properties

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1862-5282