Study on the Wear Resistance of Sinter Alloying Steel by Deep Cryogenic Treatment

  • Chao-Hsu Cheng

Abstract

Sintered alloy steel powder with four different hardenability of FN0200, FN0208, FD0408, and FLNC4808 are applied to form the sintered alloy steel.   The sintered alloy steel, being cooled down to room temperature, is further soaked in-196℃liquid nitrogen for 4hrs deep cryogenic treatment.

With deep cryogenic treatment, the retained austenite in the sintered alloy steel would change the phase and become martensite, and the apparent hardness of sintered alloy steel would be enhanced.  Further analyzing the effect of deep cryogenic treatment on the wear resistance of sintered alloy steel, the wear resistance would be improved when the apparent hardness of sintered alloy steel is enhanced.  However, the deep cryogenic treatment would change the sintered alloy steel microstructures because of distinct hardenability.  Such research findings show the significant effect of deep cryogenic treatment on the sintered alloy steel with high hardenability, where the best hardness and wear resistance could be acquired from FLNC4808 sintered alloy steel through the deep cryogenic treatment.

References

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B. Podgornik, et. al., “Improving tribological properties of tool steels through combination of deep-cryogenic treatment and plasma nitriding,” Wear, vol. 288, pp. 88-93, 2012.

V. Leskovšek and B. Podgornik, “Vacuum heat treatment, deep cryogenic treatment and simultaneous pulse plasma nitriding and tempering of P/M S390MC steel,” Materials Science and Engineering: A, vol. 531, pp. 119-129, 2012.

T. Slatter, R. Lewis, and A. H. Jones, “The influence of cryogenic processing on wear on the impact wear resistance of low carbon steel and lamellar graphite cast iron,” Wear, vol. 271, pp. 1481-1489, 2011.

K. M. Asl, et. al., “Effect of deep cryogenic treatment on microstructure, creep and wear behaviors of AZ91 magnesium alloy,” Materials Science and Engineering: A, vol. 523, pp. 27-31, 2009.

Published
2016-06-01
How to Cite
Cheng, C.-H. (2016). Study on the Wear Resistance of Sinter Alloying Steel by Deep Cryogenic Treatment. Proceedings of Engineering and Technology Innovation, 2, 8-10. Retrieved from http://ojs.imeti.org/index.php/PETI/article/view/220
Section
Articles