Erosion ductile behavior

II.1 In Section 8.2, we saw how erosive wear can be different for brittle and ductile materials. In reality, most materials exhibit behavior that is a combination of... 

In the erosion literature, materials are broadly classified as ductile or brittle, based on the dependence of their erosion rate on a. Ductile materials, such as pure metals, have a maximum erosion rate, E, at low angles of incidence (typically 15 to 30°), while for brittle materials, such as ceramics, the maximum is at or near 90°. These two classical extremes are illustrated in Fig. 9. A variety of curves intermediate between these classical extremes exist and in some cases the same material exhibits behavior that shifts from one extreme to the other, depending on erosion conditions. 

Wear Behavior of Laser-Melted Surfaces. Figure 3 shows that significant improvements in erosion behavior of gray and ductile iron are possible with laser melting. Improved wear resistance can also be obtained with laser-melted tool steels. 

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