Gigacycle Fatigue Endurance Strength of High Density Mo and Cr-Mo Prealloyed Sintered Steel

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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.

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim

Pages:

689-692

DOI:

10.4028/www.scientific.net/MSF.534-536.689

Citation:

C. Xu et al., "Gigacycle Fatigue Endurance Strength of High Density Mo and Cr-Mo Prealloyed Sintered Steel ", Materials Science Forum, Vols. 534-536, pp. 689-692, 2007

Online since:

January 2007

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Price:

$38.00

[1] F.J. Esper, C.M. Sonsino, Fatigue Design for P/M Components: Manual for Design and Production Engineers, EPMA, London, (1994).

[2] A. Hadrboletz, B. Weiss: Int. Mat. Reviews, Vol. 42, No. 1, 1997, pp.1-44.

[3] Y. Furuya, S. Matsuoka, T. Abe, Met. and Mat. Trans. Vol. 34A , Vol. 11(2003) p.2517.

[4] Y. Furuya, S. Matsuoka, T. Abe, Met. and Mat. Trans. Vol. 35A, No. 12(2004) p.3737.

[5] D. Spoljaric et al.: Proc. PM'94 Powder Metall. World Congress Paris (1994) Vol. 2, p.827.

[6] H. Danninger, D. Spoljaric, B. Weiss: Int. J. Powder Metall. Vol. 33 No. 4 (1997) p.43.

[7] C.M. Sonsino: Konstruktion 2005 No. 4, p.87.

[8] H. Danninger, B. Weiss: Powder Metall. Progress Vol. 1 No. 1 (2001) p.19.

[9] P. Beiss: Pulvermetallurgie in Wiss. & Praxis Vol. 19, H. Kolaska ed. (2003) p.3.

[10] P. Skoglund: Powder Metallurgy Vol. 44 No. 3 (2001).

[11] C.M. Sonsino, Schlieper, W.J. Huppmann: Int. J. Powder Metall. Vol. 20 No1 (1984).

[12] S. Berg, P/M steel suitable for sinter hardening in respect of cost and performance, Proc. PM²Tec 2001, New Orleans, USA, May 2001 (on CD).

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