Abstract
The paper examines the production of a composite material that is double hardened by adding titanium carbides and borides to the steel and by quenching the metal matrix and letting it to age. Samples containing 30 wt.% TiC or TiB2 are produced by liquid phase sintering, hot pressing, and hot forging. The effect of thermal treatment on the mechanical properties and structural state of the material is investigated. The material quenched and aged is established to be twice as durable and hard as the sintered one. Hence, it can be mechanically treated after sintering and then thermally treated. The highest possible strength of the material produced is 1400 to 1500 MPa and hardness 60 to 65 HRC. Strengthening worn reinforcing-wire knives with plates of the composite material prolonged their life by 50 to 100% compared with the standard knife.
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Translated from Poroshkovaya Metallurgiya, Vol. 46, No. 7–8 (456), pp. 28–34, 2007.
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Drachinskii, A.S., Maslyuk, V.A., Samsonov, Y.I. et al. Sintered metals and alloys. Powder Metall Met Ceram 46, 332–337 (2007). https://doi.org/10.1007/s11106-007-0053-1
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DOI: https://doi.org/10.1007/s11106-007-0053-1