TY - JOUR

T1 - Effects of Cryogenic Treatment on the Microstructure and Mechanical Properties of High-alloyed Tool Steels

AU - Schulz, A.

AU - Cui, C.

AU - Steinbacher, M.

AU - Ümit, T.

AU - Wunde, M.

AU - Jung, I.

AU - Acar, S.

AU - Nürnberger, F.

AU - Gerstein, G.

AU - Herbst, S.

AU - Maier, H. J.

N1 - Funding Information: This work was carried out as part of the IGF project 19289 N “Increase of technological properties by cryogenic treatment of tool steels (nanocarbides)” of the FOSTA – Forschungsvereinigung Stahlanwendung e. V., Düsseldorf, in cooperation with the AWT – Arbeitsgemeinschaft Wärmebehandlung und Werkstofftechnik e. V., and was founded by the Arbeitsgemeinschaft industrieller Forschungsvereinigungen “Otto-von-Guericke” e. V. (AiF) within the program of Industrial Community Research (IGF) funded by the Federal Ministry of Economics and Energy on the basis of a resolution of the German parliament. We would like to express our appreciation to the project committee for the constructive cooperation and discussion on the research. We would also like to give special thanks to voestalpine High Performance Metals Deutschland GmbH, Dörrenberg Edelstahl GmbH and Kind & Co for the provision of the tool steels for the study. We are also grateful to Linde AG for providing us with a Cryoflex B80 freezer.

PY - 2021/2/23

Y1 - 2021/2/23

N2 - In this work, the influence of a cryogenic treatment on the microstructure, mechanical properties and wear resistance of the high-alloyed tool steels X38CrMoV5-3, X153CrMoV12 and ~X190CrVMo20-4 were investigated. Based on tempering curves of the steels, the heat treatment parameters were determined for the mechanical and wear specimens so that the conventionally heat-treated steels and the cryogenically treated steels featured similar hardness. The investigations showed that an almost complete transformation of retained austenite and a more homogeneous distribution of secondary carbides in the microstructure could be achieved by incorporating a cryogenic treatment. However, the cryogenic treatment does not show significantly positive effects on the investigated mechanical properties and wear resistance of the tool steels. The wear resistance of the samples was dominated by primary carbides. The cryogenic treatment would have a positive effect on large tool components with large wall thicknesses in terms of uniform and complete transformation of retained austenite throughout the entire components.

AB - In this work, the influence of a cryogenic treatment on the microstructure, mechanical properties and wear resistance of the high-alloyed tool steels X38CrMoV5-3, X153CrMoV12 and ~X190CrVMo20-4 were investigated. Based on tempering curves of the steels, the heat treatment parameters were determined for the mechanical and wear specimens so that the conventionally heat-treated steels and the cryogenically treated steels featured similar hardness. The investigations showed that an almost complete transformation of retained austenite and a more homogeneous distribution of secondary carbides in the microstructure could be achieved by incorporating a cryogenic treatment. However, the cryogenic treatment does not show significantly positive effects on the investigated mechanical properties and wear resistance of the tool steels. The wear resistance of the samples was dominated by primary carbides. The cryogenic treatment would have a positive effect on large tool components with large wall thicknesses in terms of uniform and complete transformation of retained austenite throughout the entire components.

KW - Cryogenic treatment

KW - Mechanical properties

KW - Microstructure

KW - Tool steel

KW - Wear resistance

UR - http://www.scopus.com/inward/record.url?scp=85095832539&partnerID=8YFLogxK

U2 - 10.3139/105.110422

DO - 10.3139/105.110422

M3 - Article

AN - SCOPUS:85095832539

VL - 75

SP - 287

EP - 307

JO - HTM - Journal of Heat Treatment and Materials

JF - HTM - Journal of Heat Treatment and Materials

SN - 1867-2493

IS - 5

ER -