Evaluation of Surface Topography after Face Turning of CoCr Alloys Fabricated by Casting and Selective Laser Melting

被引:13
作者
Krawczyk, Marta Beata [1 ]
Krolikowski, Marcin Andrzej [1 ]
Grochala, Daniel [1 ]
Powalka, Bartosz [1 ]
Figiel, Pawel [2 ]
Wojciechowski, Szymon [3 ]
机构
[1] West Pomeranian Univ Technol Szczecin, Fac Mech Engn & Mechatron, Dept Mfg Engn, Ave 19, PL-70310 Szczecin, Poland
[2] West Pomeranian Univ Technol Szczecin, Fac Mech Engn & Mechatron, Dept Mat Technol, Ave 19, PL-70310 Szczecin, Poland
[3] Poznan Univ Tech, Fac Mech Engn & Management, Inst Mech Technol, Piotrowo 3, PL-60965 Poznan, Poland
关键词
surface topography; chrome-cobalt alloy; SLM; face; MACHINABILITY; STRENGTH; SPEED; STEEL;
D O I
10.3390/ma13112448
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The machinability of hard-to-cut CoCr alloys manufactured by Selective Laser Melting (SLM) technology is not yet sufficiently studied. Therefore, this work focuses on evaluation of surface texture formation during face turning of CoCr alloy. As part of the research, two specimen types were subject to comparison: made with the application of conventional casting and manufactured by additive manufacturing-SLM. A number of analytical and experimental methods were employed to describe the specimen composition and morphology, as: X-Ray Diffraction Analysis (XRD), optical metallurgical microscopy, confocal optical microscopy, and Vickers hardness HV0.1 measurements. In the next stage, the measurements of surface topographies formed during turning in a range of variable cutting speeds and feeds were carried out. Ultimately the multi-factor MANOVA (Multivariate Analysis of Variance) illustrating the influence of manufacturing technology, cutting speed, and feed ratio on selected surface parameters of samples was made. It has been demonstrated that during face turning with feeds up to 0.15 mm/rev, the similar values of surface roughness height and material ratio curve parameters were reached for both tested CoCr alloys. However, in a range of higher feed values, the surface quality of CoCr samples fabricated by SLM was lower than that reached for CoCr after casting process.
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页数:16
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