Comparative Study on the Generation and Characteristics of Debris Induced by Fretting and Sliding.

The aim of the present work was to comparatively investigate the generation and characteristics of fretting and sliding wear debris produced by CuNiAl against 42CrMo4. Tribological tests were conducted employing a self-developed tribometer. Most experimental conditions were set the same except for the amplitudes and number of cycles.

TEM observation on phase separation and interfaces of laser surface alloyed high-entropy alloy coating.

Phase separation is a common phenomenon in traditional alloys. Under the condition of appropriate undercooling, the segregation phenomenon can be also found in blue-chip high-entropy alloys (HEAs). In this work, the phase separation behavior and interfacial investigation of laser surface alloyed HEA coating with high content Ti were studied principally by transmission electron microscopy.