- The Effects of MoS2 Addition on the Mechanical Properties of Fe-Cr-Mn-C-V P/M Alloy
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Geon-Hong Kim, Hyun Seok Yang, Man-Sik Kong
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J Korean Powder Metall Inst. 2014;21(4):294-300. Published online August 1, 2014
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DOI: https://doi.org/10.4150/KPMI.2014.21.4.294
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Abstract
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The connecting rod is one of the most important parts in automotive engines, transforming the reciprocal motion of a piston generated by internal combustion into the rotational motion of a crankshaft. Recent advances in high performance automobile engines demand corresponding technological breakthroughs in the materials for engine parts. In the present research, the powder metallurgy (P/M) process was used to replace conventional quenching and/or tempering processes for mass production and ultimately for more cost-efficient manufacturing of high strength connecting rods. The development of P/M alloy powder was undertaken not only to achieve the improvement in mechanical properties, but also to enhance the machinability of the P/M processed connecting rods. Specifically MoS2 powders were added as lubricants to non-normalizing Fe-Cr-Mn-V-C alloy powder to improve the post-sintering machinability. The effects of MoS2 addition on the microstructure, mechanical properties, and machining characteristics were investigated.
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