Wear properties of Boron added high strength low alloy (HSLA) SAE 8620 steel

Authors

  • Munzali Musa Nigeria Police Academy, Faculty of Science, Department of Physics, Wudil, Kano State, Nigeria
  • Abubakar Gambo Mohammed Material Science and Mechanical Engineering Department, Erciyes University
  • Auwal Muhammad Department of Physics, Kano University of Science and Technology

Keywords:

SAE 8620 steel, HSLA steel, Wear rate, Friction coefficient, Tribology, High temperature

Abstract

The High Strength Low Alloy (HSLA) SAE 8620 steel with different contents of boron in ppm rate used in bearings, automotive gearing and automotive body components applications were studied. We report the relationship between wear properties, microstructural characterization and hardness properties of the steel. The steel chemical composition is selected to obtain relatively high mechanical properties with different boron contents. Increasing the normalization temperature and boron content, shows ferrite grain-size becomes larger when compared to lower normalization temperatures and boron content. With differences in boron content, only 2 HBN were measured from the average hardness of 3.3 ppm and 13.5 ppm, this clearly indicates normalization temperature has a great influence on the hardness. The boron inhibits the nucleation of ferrite at the boundary of austenite grain also increases the depth in which the steel hardened, the samples that are hardened have decrease in maximum frictional force and maximum coefficient of friction with increased boron content. The results from the high temperature studies indicate that the friction is dependent on temperature since a reduced friction level was observed with increasing temperature. Moreover, the sliding distance has no marginal effect on friction (differences for the max. coefficient of friction is small).

Metrics

Metrics Loading ...

References

E. P., DeGarmo, J. T., Black, and R. A., Kohser, Materials and Processes in Manufacturing 9th edition. United States: John Wiley & Sons, Inc., 2003.

S., Frydman, L., Konat, B., Letkowska, and G., Pekalski., “Impact resistance and fractography of low-alloy martensitic steels,” Archives of Foundry Engineering, vol. 8, pp. 89-94, 2008.

V. I., Arkharov, The Theory of Microalloying of Alloys. Moscow: Mashinostroenie, 1975.

E. M., Grinberg, L. I., Ivanov, and M. A., Krishtal, “Distribution of boron in the microstructure of a metal”, Metallovedenie i Termicheskaya Obrabotka Metalloy, pp. 74- 76, 1970.

I. I., Frantov, S. A., Golovatenko, N. I., Karchevskaya, and A. V., Rudchenko, “Structure and properties of 16G2 and 16GFR steels after hardening and short-term tempering,” Metallovedenie i Termicheskaya Obrabotka Metalloy, pp. 50-51, 1979.

A., Moria, “Properties of boron steels”, Neru Seri, vol. 18, pp. 42-48, 1979.

I. I., Frantov, “Influence of carbon and boron on phase transitions in low-alloy steels,” In High-Grade Steels and Alloys. Moscow: Metallurgiya, 1978.

M. P., Seah, “Adsorption-Induced interface decohesion,” Acta Metallurgica, vol. 28, pp. 955-962, 1980.

S., Hideo, T., Hiroshi, T., Takamitsu, H., Yasushi, and S., Yasuhiro, “TLP diffusion bonding of structural steel,” Front of Research on Behavior of Boron in Steels, pp. 189–191, 2003.

R. A., Grange, and J.B., Mitchell, Trans. ASM, vol. 53, pp. 157.

J., Larson, K. D., Seto, G. D. W., Smit, and P. J., Warren, “Grain boundary segregation in boron added interstitial free steels studied by 3-dimensional atom probe,” Scripta Materialia, vol. 40, pp. 1029-1034, 1999.

M. J., Alinger and C. J., Van Tyne, “Evolution of the tribological characteristics of several forming die materials,” Journal of Materials Processing Technology, vol. 111, pp. 20–24, 2001.

M. J., Alinger and C. J., Van Tyne, “Evolution of die surfaces during repeated stretch-bend sheet steel deformation, Journal of Materials Processing Technology, vol. 141, pp. 411– 419, 2003.

G. A., Fontalvo, R., Humer, C., Mitterer, K., Sammt, and I., Schemmel, “Microstructural aspects determining the adhesive wear of tool steels,” Wear, vol. 260, pp. 1028–1034, 2006.

T., Skare, and F., Krantz, “Wear and frictional behaviour of high strength steel in stamping monitored by acoustic emission technique,” Wear, vol. 255, pp. 1471–1479, 2003.

M. Pellizzari, A. Molinari, and G. Straffelini, “Tribological behaviour of hot rolling rolls,” Wear, vol. 259, 1281–1289, 2005.

Downloads

Published

2018-06-27

How to Cite

[1]
M. Musa, A. G. . Mohammed, and A. Muhammad, “Wear properties of Boron added high strength low alloy (HSLA) SAE 8620 steel”, J Met Mater Miner, vol. 28, no. 1, Jun. 2018.

Issue

Section

Original Research Articles