Abstract
The paper evaluates and compares the friction and wear behavior of SAE-AISI 1060 steel and brass (CuZn37Pb2) at different initial surface roughness and normal load using pin-on-disc test. Tribological behavior of studied materials was analyzed in detail. Variation of coefficient of friction at different initial surface roughness and normal load has been correlated with wear loss, wear rate, track width. Experiments are carried out in normal load 3-5-8-10 N, sliding speed 0.24-0.35m/s and 0.48 m/s, wear track diameter 4-6-8-10 mm. Results show that friction coefficient, wear loss and wear rate of steel increase with track width at high initial surface roughness and normal load. For brass friction coefficient decreases with the increase of normal load. On the other hand, it is also found that wear loss, wear rate and track width increase with sliding distance. Microscopic of worn surfaces for each alloy were carried out and compared.
Highlights
The alloys studied SAE-AISI 1060 steel and brass (CuZn37Pb2) are widely used in applications where a high resistance to wear and stand high forming stresses
Wear rate increased at low load and high initial surface roughness, whereas wear rate is decreased at high load and low value of initial surface roughness The higher wear loss is obtained at a load of 10N and initial surface roughness of 1,24 μm
The results show that the wear loss and wear rate of steel is increased at high load and high initial surface roughness, whereas wear loss is decreased at low load and low value of initial surface roughness
Summary
The alloys studied SAE-AISI 1060 steel and brass (CuZn37Pb2) are widely used in applications where a high resistance to wear and stand high forming stresses. It is known that the tribological behavior of the materials in contact depends on several tribological parameters which are interdependent on each other such as the normal force, the sliding speed, the hardness of the material, etc. Understanding and predicting the tribological behavior of materials under different operating conditions is one of the major concerns in today's industry applications. Study the effect of different parameters that control the friction and wear behavior, especially normal load, sliding speed, and initial surface roughness is necessary. It is true that many experiments have been conducted to discover more properties of steel and brass, but the friction and wear behavior of these materials is not clearly defined, this makes the study of friction and wear at the laboratory rather specific, since wear is an evolutionary and irreversible phenomenon; each state of a system permanently destroys the previous state, so it is very difficult, if not impossible, to reconstruct the past from the observation of a degradation.
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