期刊
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
卷 24, 期 1, 页码 83-90出版社
SPRINGER
DOI: 10.1007/s12613-017-1381-x
关键词
copper titanium alloys; powder metallurgy; sintering; mechanical properties; wear
Powder metallurgical Cu-Ti alloys with different titanium additions produced by hot pressing were characterized by optical microscopy, scanning electron microscopy, X-ray diffraction analysis, and hardness, wear and bending tests. The addition of titanium to copper caused the formation of different intermetallic layers around titanium particles. The titanium content of the intermetallics decreased from the center of the particle to the copper matrix. The hardness, wear resistance, and bending strength of the materials increased with increasing Ti content, whereas strain in the bending test decreased. Worn surface analyses showed that different wear mechanisms were active during the wear test of specimens with different chemical compositions. Changes in the properties of the materials with titanium addition were explained by the high hardness of different Cu-Ti intermetallic phases.
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