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Microstructure and Properties of Cu-Al Alloy Sintered by Laser-Induced Self-propagating Synthesis
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Dongli SHUI1, Gang LI2, Xiaochen XU2
Mining and Metallurgical Engineering | 2023, 43(3) : 156 - 159
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Mining and Metallurgical Engineering | 2023, 43(3): 156-159
• MATERIALS •
Microstructure and Properties of Cu-Al Alloy Sintered by Laser-Induced Self-propagating Synthesis
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Dongli SHUI1, Gang LI2, Xiaochen XU2
Affiliations
  • 1.School of Agricultural Equipment Engineering, Liaoning Agricultural Vocational and Technical College, Yingkou 115009, Liaoning, China
  • 2.Yingkou College of Technology, Yingkou 115014, Liaoning, China
Published: 2023-06-01 doi: 10.3969/j.issn.0253-6099.2023.03.035
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With laser high-energy beam as heat source to initiate exothermic reaction, Cu-Al powder was compacted and sintered into Cu-Al alloy containing in-situ formed hard reinforcing phase Al2O3 by laser-induced self-propagating synthesis. The effect of Cu-Al ratio in the composition on the microstructure and properties of alloy system was explored. The results show that the microstructure of Cu-Al alloy is a multiphase structure composed of hard reinforcing phase Al2O3 and matrix of CuAl2, AlCu4, Al4Cu9 and other intermetallic compounds. The alloy has rich dendritic crystals in microstructure, and becomes more uniform and fine-grained with the increase of aluminum content. Increasing the content of aluminum to a certain range is helpful to improve the compactness of sintered products. With copper and aluminum in a mass ratio of 33.2∶66.8, the sintered product has the lowest porosity (10.57% ), the highest microhardness (373HV) and the best wear resistance (with wear rate of 0.137 g/mm2).

laser sintering  /  reinforcing phase  /  hard phase  /  in-situ synthesis  /  Al2O3  /  Cu-Al alloy  /  microstructure
Dongli SHUI, Gang LI, Xiaochen XU. Microstructure and Properties of Cu-Al Alloy Sintered by Laser-Induced Self-propagating Synthesis[J]. Mining and Metallurgical Engineering, 2023 , 43 (3) : 156 -159 . DOI: 10.3969/j.issn.0253-6099.2023.03.035
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Year 2023 volume 43 Issue 3
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.03.035
  • Receive Date：2022-11-20
  • Online Date：2026-03-05
  • Published：2023-06-01
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  • Received：2022-11-20
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Affiliations
    1.School of Agricultural Equipment Engineering, Liaoning Agricultural Vocational and Technical College, Yingkou 115009, Liaoning, China
    2.Yingkou College of Technology, Yingkou 115014, Liaoning, 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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