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Effect of Mg Addition on Microstructure and Mechanical Properties of C19400 Alloy
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Fanjian MENG, Linjie LI, Aikui LIU, Xuemao DONG, Zhaoyang LIU, Yan LIU, Ying ZHANG, Changjian LU, Xiaowei GAO
Copper Engineering | 2026, (2) : 20 - 26
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Copper Engineering | 2026, (2): 20-26
• Material Preparation and Process Engineering •
Effect of Mg Addition on Microstructure and Mechanical Properties of C19400 Alloy
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Fanjian MENG, Linjie LI, Aikui LIU, Xuemao DONG, Zhaoyang LIU, Yan LIU, Ying ZHANG, Changjian LU, Xiaowei GAO
Affiliations
  • He'nan KMD Advanced Materials and Technology Co.，Ltd.，Xinxiang 453000，China
Published: 2026-04-28 doi: 10.3969/j.issn.1009-3842.2026.02.003
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This study aims to investigate the influence of Mg addition on the microstructure and properties of C19400 alloy, providing a potential approach for performance enhancement. To this end, C19400 alloys with varying Mg contents were fabricated under identical processing conditions, and then the alloys with different Mg contents were processed by thermomechanical treatment. Microstructure, mechanical properties, electrical conductivity, softening temperature, and bending performance of the alloys in different processing states were examined. Results revealed that Mg addition suppressed the precipitation of secondary phase, leading to a finer and more homogeneous dispersion. Under the same deformation and heat treatment conditions, tensile strength and hardness of the alloys increased with Mg content. Moreover, Mg-containing C19400 alloys exhibited superior high-temperature softening resistance, with the softening temperature reaching 490 ℃. Bending performance of Mg-containing C19400 alloys was significantly improved compared with the Mg-free alloys with the same thickness.

C19400 alloy  /  Mg  /  mechanical property  /  high temperature softening resistance  /  bending property
Fanjian MENG, Linjie LI, Aikui LIU, Xuemao DONG, Zhaoyang LIU, Yan LIU, Ying ZHANG, Changjian LU, Xiaowei GAO. Effect of Mg Addition on Microstructure and Mechanical Properties of C19400 Alloy[J]. Copper Engineering, 2026 , (2) : 20 -26 . DOI: 10.3969/j.issn.1009-3842.2026.02.003
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Year 2026 volume Issue 2
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doi: 10.3969/j.issn.1009-3842.2026.02.003
  • Receive Date：2025-08-20
  • Online Date：2026-09-09
  • Published：2026-04-28
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  • Received：2025-08-20
  • Revised：2025-12-16
Affiliations
    He'nan KMD Advanced Materials and Technology Co.，Ltd.，Xinxiang 453000，China
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https://castjournals.cast.org.cn/joweb/tygc/EN/10.3969/j.issn.1009-3842.2026.02.003
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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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