Abstract
This dry wear test intended to examine influences of a sampling direction to the wear characteristics and the wear mechanism. Both the wear characteristics and the wear mechanism of 5083 alloy are independent of the sampling direction. Severe sticking of Fe occurs on the sliding surface in the low velocity range. Fe is activated in the range and is easily oxidized by air to form ferrous oxides. As the sliding velocity is accelerated, a part of the alloy is heated up to a molten condition by the frictional heat. If slight metal transfer to the rotor occurs in the initial stage of higher velocity range, fused 5083 alloy acts as a lubricant and decreases wear loss. Considerable metal transfer to the rotor occurs in the higher velocity range resulting in mutual friction of 5083 to 5083 alloy. Heavy adhesion and fusion increase the wear loss.
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