Effects of Al-Si/SiCp powder on the sinterability and wear properties of Al-Zn-Mg powder

Lee, Eun Sun; Oak, Jeong-Jung; Bang, Jeongil; Park, Taesung

doi:10.1016/j.jallcom.2016.07.215

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…Before the test, the sample pins and disk were polished to a surface finish of about 0.5 mm, washed with ethanol solution, and dried to obtain stable friction coefficient. Constant sliding speed of 100 r/min (0.188 m/s), [11][12][13] load of 40 N, and sliding time of 15 min were the parameters ( Figure 1) selected for the tests (35%-50% relative humidity, room temperature). The weight of the sample before and after the test was measured using a FA2204B electronic balance (accuracy 6 0.1 mg).…”

Section: Methodsmentioning

confidence: 99%

The effect of Sr on the microstructure and wear properties of AlSi5Cu1Mg alloy

Zhu

Luo

et al. 2018

Advances in Mechanical Engineering

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The effect of different amounts (0 wt%, 0.02 wt%, 0.04 wt%, 0.06 wt%) of Sr modification on the microstructure of AlSi5Cu1Mg alloy was investigated. The wear resistances of the alloys were tested using an MMD-1 pin-on-disk weartesting apparatus. Worn surfaces were examined using a scanning electron microscopy equipped with an energydispersive spectrometer. The relationship between the microstructure and wear properties of the alloy was discussed. The results show that the addition of Sr caused the grain refinement and AlSi5Cu1Mg with 0.04 wt% Sr has short rodlike Fe-rich intermetallic, minimal size of a-Al phase and secondary dendrite arm spacing, and granular or fibrous eutectic Si phase distributed uniformly at grain boundaries. Compared to the matrix alloy, the tensile strength, Brinell hardness, and elongation of the AlSi5Cu1Mg with 0.04 wt% Sr increased by 15%, 48%, and 73%, respectively. Both the lowest friction coefficient and the best wear resistance were achieved by the AlSi5Cu1Mg with 0.04 wt% Sr. Compared to the matrix alloy, the wear mass loss and friction coefficient of the AlSi5Cu1Mg with 0.04 wt% Sr increased by 42% and 18%, respectively. The adhesive wear and abrasive wear are the main wear mechanisms.

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Section: Methodsmentioning

confidence: 99%