Study Of Abrasive Wear Research Articles

Force and Energy Measurements During Controlled Grooving—A Basic Study of Abrasive Wear

Basic studies of abrasive wear have been performed by controlled grooving in a modified impact tester equipped with a cemented carbide tip. Specimen holders were constructed to permit normal and tangential force measurements during grooving and to enable quick-stop tests. The grooving energy is read directly from the standard pendulum meter or integrated from tangential force curves. A series of metals were studied by single-tip grooving and the grooving energy was plotted versus weight loss W within a large W interval. Mettallographic studies reveal characteristic friction layers in the groove bottom and walls and also show that the development of these layers is governed by the mechanisms of chip formation. A particular purpose of this work is to find relations between internal structure and microhardness profiles on one hand and grooving forces/energy and wear resistance on the other. There are indications that the specific grooving energy e = E/W can be used to predict abrasive wear resistance under w...

A study of abrasive wear under three-body conditions

Measurements have been made of the abrasive wear rates of metals being slid together while their interface was provided with copious amounts of powdered abrasive (3-body abrasion). The quantitative relations between the wear rates and time of sliding, material hardness and abrasive grain size were determined, and found to be similar to those prevailing during 2-body abrasion, i.e., during the sliding of metals against abrasive-covered paper. The effects of moisture and of abrasive flow rate were investigated, and good reproducibility was found when these two variables were controlled. A simple quantitative expression for abrasive wear rate is developed, and the abrasive wear data of a number of earlier investigators is analysed in terms of this expression. Abrasive wear rates during 3-body abrasion are about 10 times less than during 2-body abrasion, probably because the average loose abrasive grain spends 90% of its time rolling and only 10% of its time abrading the sliding surfaces between which it is situated.