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激光选区熔化Al-Si-Mg-Zr-Cu合金的成形性、组织和力学性能

耿遥祥 单志法 陈永康 宰春凤 王肖 高兴 王宇鑫

耿遥祥, 单志法, 陈永康, 宰春凤, 王肖, 高兴, 王宇鑫. 激光选区熔化Al-Si-Mg-Zr-Cu合金的成形性、组织和力学性能[J]. 材料开发与应用, 2024, 39(1): 23-29.
引用本文: 耿遥祥, 单志法, 陈永康, 宰春凤, 王肖, 高兴, 王宇鑫. 激光选区熔化Al-Si-Mg-Zr-Cu合金的成形性、组织和力学性能[J]. 材料开发与应用, 2024, 39(1): 23-29.
GENG Yaoxiang, SHAN Zhifa, CHEN Yongkang, ZAI Chunfeng, WANG Xiao, GAO Xing, WANG Yuxin. Processability, Microstructure, and Mechanical Property of Al-Si-Mg-Zr-Cu Alloy Fabricated by Selective Laser Melting[J]. Development and Application of Materials, 2024, 39(1): 23-29.
Citation: GENG Yaoxiang, SHAN Zhifa, CHEN Yongkang, ZAI Chunfeng, WANG Xiao, GAO Xing, WANG Yuxin. Processability, Microstructure, and Mechanical Property of Al-Si-Mg-Zr-Cu Alloy Fabricated by Selective Laser Melting[J]. Development and Application of Materials, 2024, 39(1): 23-29.

激光选区熔化Al-Si-Mg-Zr-Cu合金的成形性、组织和力学性能

基金项目: 

国家自然科学基金资助项目(52001140)

详细信息
    作者简介:

    耿遥祥,男,1986年生,博士,副教授,主要从事激光选区熔化成形铝合金的成分设计及性能研究。

  • 中图分类号: TG146.2

Processability, Microstructure, and Mechanical Property of Al-Si-Mg-Zr-Cu Alloy Fabricated by Selective Laser Melting

  • 摘要: 为提升激光选区熔化(SLM)Al-Si-Mg系铝合金的强度,本研究以SLM专用高Mg含量Al-Si-Mg-Zr合金为基础,通过引入Cu元素对合金进行成分改性,系统研究了Al-Si-Mg-Zr-Cu合金的SLM成形性、显微组织和力学性能。结果表明,在250 W低激光功率下,合金具有良好的SLM成形性能,最大相对密度为99.8%。合金的显微组织以等轴晶为主,熔池内部存在少量的柱状晶,合金的晶粒内部包含网状亚结构,α-Al基体内存在纳米级沉淀相。在激光功率250 W,激光扫描速度1 200 mm/s的工艺参数下制备的SLM成形Al-Si-Mg-Zr-Cu合金的显微硬度为(159±4)HV、抗拉强度为(461±25) MPa、屈服强度为(397±32) MPa、伸长率为(2.4±0.7)%,其强度明显高于目前报道的SLM成形Al-Si-Mg系铝合金的。

     

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出版历程
  • 收稿日期:  2023-10-10

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