Studies on the Damping Capacity of Flaky Graphite Cast Irons

Matsui, Kei; Matsuno, Akira; Kizu, Fumio; Takahashi, Mutsumi; Kanno, Hideo

doi:10.2320/jinstmet1952.40.10_1062

Cited by 3 publications

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“…49,55) For example, the damping capacity of spray-deposited 6061Al/Graphite composite is lower than that of its extruded composite counterpart, despite having the same graphite content. 49) One of the differences between the two composites is the orientation of the graphite phase: the latter composite assumed a preferred orientation by the extrusion process.…”

Section: Discussionmentioning

confidence: 99%

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

et al. 2006

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The microstructures and mechanical properties of fullerene powder dispersed AZ91 magnesium alloy composites were examined. The AZ91 with 0, 1 and 5 mass% fullerene additions were produced by extruding a mixture of AZ91 machined chips and fullerene powder. The matrix grains of the extruded materials were equiaxed, and the size was $ 5 mm irrespective of the fullerene content. The agglomerated fullerene powder was aligned parallel to the extrusion direction in the composites. The addition of 1 mass% fullerene had little effect on the elastic moduli, tensile strength and ductility, whereas the addition of 5 mass% fullerene slightly decreased them. A comparison between the tensile properties of the present composites and those of AZ91 alloys processed by various methods was also made. The damping capacity increased steeply by the fullerene addition. The effectiveness of the fullerene addition for the enhancement of the damping capacity of metallic alloys was verified. A good combination of damping capacity, elastic moduli, strength and ductility was attained in the present composites.

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Section: Discussionmentioning

confidence: 99%

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

et al. 2006

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“…This enlarged graphite shows high damping capacity, compared to that of common gray cast iron. 2) In this study, we reproduced the low silicon hyper eutectic cast iron which was made at the end of the Edo period, and considered its new possibility.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Flowability of Ultra Low Silicon Hyper-Eutectic Flake Graphite Cast Iron

et al. 2018

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In this study, we reproduced the hyper-eutectic cast iron made at the end of the Edo period, and considered its new possibility. It was found that foundry men of that period made non-chill hyper-eutectic cast iron even at very low silicon content. As for º50 © 250 mm T.P, the tensile strength of C4.53% flake graphite cast iron is 107 MPa which is very low for cast iron. It is thought that the produced thick cannon most probably burst in actual combat with this material. The melt's flow ability is the best in the eutectic composition but deteriorates suddenly when entering the hyper-eutectic composition, due to the formation of Kish graphite. Plate type carbide forms when silicon content is low and with quick cooling, in the hyper-eutectic composition. It is thought to form, due to the very slow C diffusion from the matrix to the free graphite, during the eutectoid transformation. Test pieces having plate type carbides shows excellent damping capacity.

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Moon

Hong

1998

Journal of Materials Science

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Studies on the Damping Capacity of Flaky Graphite Cast Irons

Cited by 3 publications

References 0 publications

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

Microstructure, Mechanical Properties and Flowability of Ultra Low Silicon Hyper-Eutectic Flake Graphite Cast Iron

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