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Paper Titles
Effect of Repeated Quenching Heat Treatment on Microstructure and Dry Sliding Wear Behavior of Low Carbon PM Steel
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Fatigue Properties for Sinter-Hardened Fe-Ni-Mo-Cu Materials
p.677
Functional Relationships between Fatigue Data
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Gigacycle Fatigue Crack Initiation in Cr-Mo Prealloy Sintered Steel
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Gigacycle Fatigue Endurance Strength of High Density Mo and Cr-Mo Prealloyed Sintered Steel
p.689
Influence of Binders on the Structure and Properties of High Speed-Steel HS6-5-2 Type Fabricated Using Pressureless Forming and PIM Methods
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Modification of Low Alloyed Steels by Manganese Additions
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Nominally Equivalent Powders for P/M Steels: Analysis of Response to Sintering and Differences at Various C Content
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Processing Routes for Obtaining Novel High Performance Mn-Containing PM Steels
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Gigacycle Fatigue Endurance Strength of High Density Mo and Cr-Mo Prealloyed Sintered Steel

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Abstract:

For attaining optimum fatigue resistance of PM steels, high density levels are necessary. In this work, sintered steels Fe-1.5%Mo-0.6%C and Fe-1.5%Cr-0.2%Mo-0.6%C were produced with density levels of 7.1 to 7.6 g.cm-3. Ultrasonic fatigue testing with 20 kHz was performed in push- pull mode up to 10E9 cycles. It was shown that the fatigue endurance strength is strongly improved by higher density levels, but also higher sintering temperatures are beneficial. The Cr-Mo steels proved to be superior to the plain Mo alloyed, due to a more favourable as-sintered matrix microstructure.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

689-692

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.689

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Online since:

January 2007

Authors:

Chen Xu, Herbert Danninger, Golta Khatibi, Brigitte Weiss

Keywords:

Composition, Fatigue, High Velocity Compaction, Microstructure, Sintered Steel

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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