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Wear characteristics of 5083 aluminum alloy sheet, rubbed with the same alloy, 4-6 brass and S45C carbon steel were discussed mainly in view of the wear loss of the rubbed specimens.From the wear loss versus sliding distance curves for the 5083 aluminum alloy specimen rubbed with the same aluminum alloy, two typical and distinct ranges, that is, the initial wear range and the steady wear range, were confirmed. It was also observed that the steady wear range was reached after the initial wear range of about 100m of sliding distance which accompanied a drastic variation of frictional force under the following sliding conditions; applied load of from 7 to 17kg and sliding speed from 0.11m/sec to 0.55m/sec. A trace of localized melting of contact asperities of the 5083 aluminum alloy surface was suggested from the scanning electron microscope observations of the worn surface.The wear loss of the 5083 aluminum alloy rubbed with 4-6 brass was negligibly small under the above experimental conditions, while the wear loss of the 4-6 brass specimen was remarkably large probably due to a typical lapping effect of the 5083 aluminum alloy specimen inlayed with particles or patches of the worn 4-6 brass.The wear loss of the 5083 aluminum alloy specimen, rubbed with S45C carbon steel, was influenced generally little by the sliding conditions. While, the wear loss of S45C carbon steel was markedly effected by the sliding speed and decreased remarkably with its increase. This was probably due to an increase in local melting of the contact asperities of the 5083 aluminum alloy specimen. By the X-ray diffraction analysis of the wear debris produced by the aluminum alloy and S45C carbon steel rubbed with each other at a sliding speed of 0.11m/sec and under an applied load of 7 to 17kg, strong diffraction lines of metallic aluminum and weak single diffraction line of iron oxide (FeO) were confirmed.The temperature rise of the contact surface of the 5083 aluminum alloy rubbed with the same aluminum alloy was discussed in view of both experimental and theoretical considerations. Measured values of the temperature near the contacting surfaces were from 33 to 96°C for a sliding speed of 0.33m/sec and under an applied load of 7 to 17kg, while theoretical values were about 35 to 125°C.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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