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Microstructure and Mechanical Properties of CMT Surfacing Layer of Babbitt Alloy
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Junwu ZHENG1, Shao CHEN2, Fukun LI3
Mining and Metallurgical Engineering | 2023, 43(1) : 150 - 153
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Mining and Metallurgical Engineering | 2023, 43(1): 150-153
• MATERIALS •
Microstructure and Mechanical Properties of CMT Surfacing Layer of Babbitt Alloy
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Junwu ZHENG1, Shao CHEN2, Fukun LI3
Affiliations
  • 1.Wuxi Institute of Communications Technology, Wuxi 214151, Jiangsu, China
  • 2.School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, Shandong, China
  • 3.Shandong Taishan Iron & Steel Group Co Ltd, Jinan 271100, Shandong, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.033
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A surfacing layer of Babbitt alloy was prepared on the surface of steel 20 by cold metal transfer (CMT) welding. And the metallographic morphology, phase composition, microstructure, element distribution, hardness and friction coefficient of the surfacing layer were analyzed by using metallographic microscope, X-ray diffractometer, scanning electron microscope, energy dispersive spectrometer, Vickers hardness tester, as well as friction and wear tester. The results show that the phase structure of surfacing layer of Babbitt alloy does not change and is composed of hard point SnSb phase, Cu6Sn5 phase and soft matrix α-Sn phase. A lower heat input leads to a rapid cooling rate for the surfacing layer of Babbitt alloy, and the surfacing layer with a finer grain size has hardness around 40HV0.1, much higher than that of cast Babbitt alloy. As the microhardness increases, the friction coefficient and specific wear rate of Babbitt alloy fall down to 0.31 and 1.38 × 10-5 mm3/(N·m), respectively. Based on the study of the wear mechanism, it is found that the surfacing layer of Babbitt alloy principally experiences abrasive wear. CMT welding can effectively improve the hardness and wear resistance of Babbitt alloy.

cold metal transition (CMT) welding  /  surfacing welding  /  Babbitt alloy  /  wear  /  surfacing layer
Junwu ZHENG, Shao CHEN, Fukun LI. Microstructure and Mechanical Properties of CMT Surfacing Layer of Babbitt Alloy[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 150 -153 . DOI: 10.3969/j.issn.0253-6099.2023.01.033
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Year 2023 volume 43 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.01.033
  • Receive Date：2022-08-22
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-22
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Affiliations
    1.Wuxi Institute of Communications Technology, Wuxi 214151, Jiangsu, China
    2.School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, Shandong, China
    3.Shandong Taishan Iron & Steel Group Co Ltd, Jinan 271100, Shandong, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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