Powder Metallurgy Manufacturing of Carbon-Free Precipitation Hardened High Speed Steels

• Authors: H. Danninger , Ch. Harold , Ch. Gierl , H. Ponemayr , M. Daxelmueller , F. Simancik , K. Izdinsky
• Languages of publication: EN

Abstracts

EN

Carbon-free steels of the type Fe-Co-(Mo,W) have been known for long to attain very high hardness levels through precipitation hardening. However, the classical ingot metallurgy route tended to result in brittle materials. Here it is shown that the powder metallurgy route through mixing of elemental powders, pressing and sintering results in materials with excellent combination of hardness and transverse rupture strength if the processing parameters are adjusted accordingly, in particular sintering and heat treatment being critical stages that should result in chemically homogeneous and fine-grained microstructure. If properly processed, these steel grades offer excellent red hardness since the hardening intermetallic phases are much less sensitive to overaging than the secondary carbides in standard high speed steels.

Keywords

EN

81.05.Bx; 81.40.-z

Discipline

• 81.40.-z: Treatment of materials and its effects on microstructure, nanostructure, and properties
• 81.05.Bx: Metals, semimetals, and alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 5
• Pages: 825-830

Dates

published

2010-05

Contributors

author

H. Danninger

• Vienna University of Technology, A-1060 Wien, Austria

author

Ch. Harold

• Vienna University of Technology, A-1060 Wien, Austria

author

Ch. Gierl

• Vienna University of Technology, A-1060 Wien, Austria

author

H. Ponemayr

• Boehler-Ybbstal Profil GmbH, A-3333 Boehlerwerk, Austria

author

M. Daxelmueller

• Boehler Uddeholm Precision Strip GmbH, A-3333 Boehlerwerk, Austria

author

F. Simancik

• Institute of Materials and Machine Mechanics SAS, SK-83102 Bratislava, Slovakia

author

K. Izdinsky

• Institute of Materials and Machine Mechanics SAS, SK-83102 Bratislava, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.117.825