Microstructure and tribological behavior of the nickel-coated-graphite-reinforced Babbitt metal composite fabricated via selective laser melting

Titanium composite strengthened by Ti3Al precipitations is considered to be one of the excellent materials that is widely used in engineering. In this work, we prepared a kind of Ti-Ti3Al metallic composite by in-situ synthesis technology during the SLM (selective laser melting) process, and analyzed its microstructure, wear resistance, microhardness, and compression properties. The results showed that the Ti-Ti3Al composite, prepared by in-situ synthesis technology based on SLM, had more homogeneous Ti3Al-enhanced phase dispersion strengthening structure. The grain size of the workpiece was about 1 μm, and that of the Ti3Al particle was about 200 nm. Granular Ti3Al was precipitated after the aluminum-containing workpiece formed, with a relatively uniform distribution. Regarding the mechanical properties, the hardness (539 HV) and the wear resistance were significantly improved when compared with the Cp-Ti workpiece. The compressive strength of the workpiece increased from 886.32 MPa to 1568 MPa, and the tensile strength of the workpiece increased from 531 MPa to 567 MPa after adding aluminum. In the future, the combination of in-situ synthesis technology and SLM technology can be used to flexibly adjust the properties of Ti-based materials.

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Tribological behavior of Ti6Al4V cellular structures produced by Selective Laser Melting

Journal of the Mechanical Behavior of Biomedical Materials ◽

10.1016/j.jmbbm.2017.01.004 ◽

2017 ◽

Vol 69 ◽

pp. 128-134 ◽

Cited By ~ 36

Author(s):

F. Bartolomeu ◽

M. Sampaio ◽

O. Carvalho ◽

E. Pinto ◽

N. Alves ◽

...

Keyword(s):

Selective Laser Melting ◽

Tribological Behavior ◽

Cellular Structures ◽

Laser Melting

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Effect of cryogenic treatment on tribological behavior of Ti6Al4V alloy fabricated by selective laser melting

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2021.04.012 ◽

2021 ◽

Author(s):

Xina Huang ◽

Shoubin Ding ◽

Wen Yue

Keyword(s):

Selective Laser Melting ◽

Tribological Behavior ◽

Cryogenic Treatment ◽

Ti6al4v Alloy ◽

Laser Melting

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Tribological behavior of boron nitride nanoplatelet reinforced Ni3Al intermetallic matrix composite fabricated by selective laser melting

Materials & Design ◽

10.1016/j.matdes.2018.107579 ◽

2019 ◽

Vol 165 ◽

pp. 107579 ◽

Cited By ~ 13

Author(s):

Ying Song ◽

Guangyu He ◽

Yongguang Wang ◽

Yao Chen

Keyword(s):

Boron Nitride ◽

Selective Laser Melting ◽

Matrix Composite ◽

Tribological Behavior ◽

Laser Melting ◽

Intermetallic Matrix ◽

Intermetallic Matrix Composite ◽

Ni3al Intermetallic

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Tribological Behavior of TiC Particles Reinforced 316Lss Composite Fabricated Using Selective Laser Melting

Materials ◽

10.3390/ma12060950 ◽

2019 ◽

Vol 12 (6) ◽

pp. 950 ◽

Cited By ~ 3

Author(s):

Jing Li ◽

Zhanyong Zhao ◽

Peikang Bai ◽

Hongqiao Qu ◽

Minjie Liang ◽

...

Keyword(s):

Selective Laser Melting ◽

High Speed ◽

Friction And Wear ◽

Sliding Friction ◽

Tribological Behavior ◽

Friction Material ◽

Bearing Steel ◽

Laser Melting ◽

Delamination Wear ◽

The Matrix

In order to improve the abrasion performance of 316Lss, make full use of its advantages and broaden its application fields, the tribological behavior of the TiC particles reinforced 316Lss composites—which were manufactured by selective laser melting (SLM)—were investigated. In this study, GCr15 bearing steel was selected as the friction material and experiments on the sliding friction and wear under different loads of 15 N, 25 N and 35 N at the sliding speeds of 60, 80 and 100 mm/min were carried out, respectively. The results show that the wear performance of the TiC/316Lss composite is higher than that of the matrix during the friction and wear experiments under all conditions and the wear rate of the TiC/316Lss composite decreases with increasing the friction rate. Similar to the wear mechanism under different loads, it changes from abrasive wear to delamination wear and severe oxidative wear. At the same time, the mechanical mixed layer formed at a high speed has a protective effect on the matrix. The reason for this phenomenon is that the mechanical properties of the TiC/316Lss composites are significantly improved due to the addition of TiC particles, the refinement of cells near the TiC particles and the formation of a large number of dislocations. In addition, due to the presence of the TiC particles, the hardness and strength of the TiC/316Lss composites are greatly improved, thus the processing hardening ability of sub-surface has been improved.

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