Experimental Study on the Surface Densification of Fe-2Cu-0.6C Powder Metallurgy Material

Liu, Xiao; Xiao, Zhiyu; Guan, Hangjian; Zhou, Wen

doi:10.1080/10426914.2015.1117619

Cited by 6 publications

(2 citation statements)

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“…The ductility of carbon steel decreases rapidly with an increasing proportion of cementite and graphite. It is noteworthy that the orientation of carbide lamellae leads to the anisotropic mechanical properties in the materials, and the rolling process will result in a highly controllable change in the direction of the carbide lamellae [12,14]. Meanwhile, the finer carbide lamellae can be beneficial for wear resistance.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon Content on the Properties of Iron-Based Powder Metallurgical Parts Produced by the Surface Rolling Process

Yan

Chen

et al. 2018

Metals

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Abstract:In recent years, the rolling densification process has become increasingly widely used to strengthen powder metallurgy parts. The original composition of the rolled powder metallurgy blank has a significant effect on the rolling densification technology. The present work investigated the effects of different carbon contents (0 wt. %, 0.2 wt. %, 0.45 wt. %, and 0.8 wt. %) on the rolling densification. The selection of the raw materials in the surface rolling densification process was analyzed based on the pore condition, structure, hardness, and friction performance of the materials. The results show that the 0.8 wt. % carbon content of the surface rolling material can effectively improve the properties of iron-based powder metallurgy parts. The samples with 0.8 wt. % carbon have the highest surface hardness (340 HV 0.1 ) and the lowest surface friction coefficient (0.35). Even if the dense layer depth is 1.13 mm, which is thinner than other samples with low carbon content, it also meets the requirements for powder metallurgy parts such as gears used in the auto industry.

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Section: Introductionmentioning

confidence: 99%

“…In the rolling process, the dense layer is obtained by plastic deformation on the surface of the sintered blank [12]. This surface densification process takes only 8-15 s for each blank; therefore, the efficiency is significantly higher than other densification methods [13].…”

Section: Introductionmentioning

confidence: 99%