构筑角度和支撑对增材制造<strong>AlSi10Mg</strong>合金腐蚀行为影响

doi:10.11902/1005.4537.2025.103

中国腐蚀与防护学报

2026, Vol. 46

Issue (1): 145-154 CSTR: 32134.14.1005.4537.2025.103 DOI: 10.11902/1005.4537.2025.103

增材制造与腐蚀专题

本期目录 | 过刊浏览

构筑角度和支撑对增材制造AlSi10Mg合金腐蚀行为影响

季磊¹, 张震¹(

), 王利卿¹, 李云龙¹, 马凯¹, 赵占勇¹, 白培康¹^,²

^1.中北大学材料科学与工程学院太原 030051
^2.太原科技大学太原 030024

Influence of Construction Angle and Supporter on Corrosion Behavior of AlSi10Mg Alloy Prepared by Laser Additive Manufacturing

JI Lei¹, ZHANG Zhen¹(

), WANG Liqing¹, LI Yunlong¹, MA Kai¹, ZHAO Zhanyong¹, BAI Peikang¹^,²

^1.School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
^2.Taiyuan University of Science and Technology, Taiyuan 030024, China

引用本文:

季磊, 张震, 王利卿, 李云龙, 马凯, 赵占勇, 白培康. 构筑角度和支撑对增材制造AlSi10Mg合金腐蚀行为影响[J]. 中国腐蚀与防护学报, 2026, 46(1): 145-154.
Lei JI, Zhen ZHANG, Liqing WANG, Yunlong LI, Kai MA, Zhanyong ZHAO, Peikang BAI. Influence of Construction Angle and Supporter on Corrosion Behavior of AlSi10Mg Alloy Prepared by Laser Additive Manufacturing[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(1): 145-154.

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摘要:

采用激光粉末床熔化技术制备了4种具有不同构筑角度和支撑的AlSi10Mg块体合金，研究了构筑角度和支撑对其腐蚀行为的影响规律。结果表明，4种合金样品呈现不同尺寸和分布的柱状和等轴晶粒组合，构筑角度和支撑对合金样品孔隙率和残余应力也存在影响，其中Vertical 90°样品孔隙率和残余应力最高。电化学结果表明，构筑角为45°的带支撑样品耐蚀性最好，具有最高的点蚀电位和极化电阻。讨论了激光粉末床熔融成形AlSi10Mg合金的微观组织对腐蚀行为的影响机制。

关键词 ：激光粉末床熔化, AlSi10Mg合金, 构筑角度, 支撑, 电化学腐蚀

Abstract：

Four different bulk AlSi10Mg alloys were fabricated by laser additive manufacturing with powder bed fusion, while their growth along either vertical, angle horizontal, or 45-degree inclined orientation, as well as on a proper supporter. The corrosion behavior of the four bulk alloys in 3.5%NaCl solution was assessed by means of electrochemical techniques. The results showed that the alloys exhibited a combination of columnar and equiaxed grains with different size and distribution. The growth orientations and supporter have effect on the porosity and residual stress of the alloys, and the vertical growth alloy had the highest porosity and residual stress. Electrochemical results showed that the alloy grown along 45-degree inclined orientation had the best corrosion resistance and the highest pitting potential and polarization resistance. The effect of microstructure on corrosion resistance of the LPBF-AlSi10Mg alloys was discussed.

Key words： laser powder bed fusion AlSi10Mg alloy construction angle supporting electrochemical corrosion

收稿日期: 2025-03-28 32134.14.1005.4537.2025.103

ZTFLH:

TG17

基金资助:国家自然科学基金(52105409);山西省科技创新人才团队专项

通讯作者: 张震，E-mail：zzhang14s@alum.imr.ac.cn，研究方向为增材制造金属材料腐蚀行为

作者简介: 季磊，2001 年出生，2019 年毕业于沈阳化工大学并获学士学位。现为中北大学硕士研究生。研究主要围绕电弧增材制造镁合金的腐蚀行为展开。此外，研究工作也涉及增材制造AlSi10Mg合金，揭示了构筑角度和支撑结构对其腐蚀行为的影响。针对镁合金在实际应用中耐蚀性差的核心问题，通过大气暴露实验，系统揭示了其腐蚀规律与内在机制。目前，已以第一作者身份在《中国腐蚀与防护学报》和《Journal of Magnesium and Alloys》上发表论文两篇。
张震，1991 年出生，2019 年毕业于中国科学院金属研究所腐蚀与防护专业，获博士学位，现就职于中北大学，副教授，硕士生导师。2021 年-2024 年在太原钢铁（集团）有限公司从事博士后工作研究。主要研究方向包括不锈钢局部腐蚀在线监测和增材制造金属材料腐蚀行为。针对核级不锈钢高温高压水腐蚀及应力腐蚀开裂问题，提出耦合声发射、电化学噪声和直流电位降等技术的多模态在线监测方法，阐明了多尺度原位信号特征与腐蚀类型和开裂方式之间的关系；针对增材制造金属材料特殊微观结构导致的特殊腐蚀行为，开展了增材制造不锈钢、铝合金和镁合金等材料“工艺-组织-后热处理-耐蚀性”关系研究，系统揭示了其腐蚀规律与内在机制。主持国家自然科学基金青年基金、中国博士后基金面上资助、山西省重点研发项目等省部级课题，以第一/通讯作者在Corrosion Science、Journal of Magnesium and Alloys 等期刊发表SCI 论文共15 篇，申请国家发明专利10 余项，担任《中国腐蚀与防护学报》、《粉末冶金金属》等期刊青年编委。

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.103 或 https://www.jcscp.org/CN/Y2026/V46/I1/145

图1 4种增材制造AlSi10Mg合金样品宏观示意图

图2 不同AlSi10Mg合金样品刻蚀后金相组织

图3 不同AlSi10Mg合金样品刻蚀后SEM形貌

图4 不同AlSi10Mg合金样品的EBSD反极图

图5 不同AlSi10Mg合金样品的极图

图6 不同AlSi10Mg合金样品的晶界取向差图和分布直方图

图7 不同AlSi10Mg合金样品残余应力

图8 不同AlSi10Mg合金样品在3.5%NaCl溶液中的动电位极化曲线及相对应的点蚀电位累计概率分布图

图9 不同AlSi10Mg合金样品在3.5%NaCl溶液中的动电位极化曲线拟合后的腐蚀电流密度和腐蚀电位

表1 不同AlSi10Mg合金在3.5%NaCl溶液中的电化学阻抗谱拟合得到的电化学参数

图11 不同AlSi10Mg合金在3.5%NaCl溶液中浸泡4 h后的SEM形貌

图12 Vertical 90°样品在3.5%NaCl溶液中浸泡4 h后的由孔洞引起的腐蚀SEM形貌及EDS能谱

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