The influence of microstructure and mechanical properties on the machinability of martensitic and bainitic prehardened mould steels
Journal article, 2013

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 ~ 40 HRC which is a typical hardness for prehardened mould steels. The results of machinability 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.

machinability

microstructure

mechanical properties

prehardened mould steel

Author

Seyyed Mohammad Hamed Hoseiny

Research Institute of Petroleum Industry, Tehran

Uddeholm

Berne Högman

Uddeholm

Hans-Olof Andrén

Chalmers, Applied Physics, Materials Microstructure

Uta Klement

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

J. E. Stahl

Lund University

Anders Thuvander

Uddeholm

International Journal of Materials Research

1862-5282 (ISSN)

Vol. 104 8 748-761

Subject Categories

Manufacturing, Surface and Joining Technology

Areas of Advance

Materials Science

DOI

10.3139/146.110926

More information

Latest update

9/6/2018 1