Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection

XUAN Minghao; ZHANG Rui; XING Bendong; WANG Xiangming

doi:10.16080/j.issn1671-833x.2021.01/02.082

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Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection

更新时间：2025-10-30

- Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection
- Aeronautical Manufacturing Technology Vol. 64, Issue 1/2, (2021)
- 作者机构：
  
  航空工业沈阳飞机设计研究所,沈阳,110035
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2021.01/02.082
  CLC：
- Published：2021
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玄明昊，张瑞，邢本东，王向明. TC4激光选区熔化/同轴送粉成形连接的力学性能研究[J]. 航空制造技术, 2021, 64(1/2): 82-88. XUAN Minghao, ZHANG Rui, XING Bendong, WANG Xiangming. Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection. Aeronautical Manufacturing Technology, 2021, 64(1/2): 82-88.

XUAN Minghao, ZHANG Rui, XING Bendong, et al. Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection[J]. Aeronautical Manufacturing Technology, 2021, 64(1/2).
玄明昊，张瑞，邢本东，王向明. TC4激光选区熔化/同轴送粉成形连接的力学性能研究[J]. 航空制造技术, 2021, 64(1/2): 82-88. XUAN Minghao, ZHANG Rui, XING Bendong, WANG Xiangming. Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection. Aeronautical Manufacturing Technology, 2021, 64(1/2): 82-88. DOI： 10.16080/j.issn1671-833x.2021.01/02.082.

XUAN Minghao, ZHANG Rui, XING Bendong, et al. Research on Mechanical Properties of Selective Laser Melting/Coaxial Powder Feeding Forming Connection[J]. Aeronautical Manufacturing Technology, 2021, 64(1/2). DOI： 10.16080/j.issn1671-833x.2021.01/02.082.

摘要

对 TC4 选区熔化/同轴送粉成形连接件的拉伸性能和疲劳性能进行研究。通过对比不同线能量密度参数下拉伸试验数据，得到线能量密度对 TC4 成形连接件拉伸性能的影响规律。通过对比相同应力水平下成形连接件与母材的中值疲劳寿命和疲劳极限，获得成形连接件相对母材疲劳特性的衰减程度。采用当量 Kt 法对成形连接件的疲劳性能进行表征，得到成形连接件的当量应力集中系数 Kte。通过对比 TC4 成形连接件与 TA15 4 种焊接工艺的（Kte）50，发现较焊接工艺成形连接工艺，具有更优的疲劳特性。

Abstract

The tensile and fatigue properties of TC4 selective laser melting/coaxial powder feeding forming joints were studied. By comparing the tensile test data under different linear energy density parameters

the influence of linear energy density on the tensile properties of TC4 formed joints was obtained. By comparing the median fatigue life and fatigue limit of the formed joints and the base metal at the same stress level

the attenuation degree of the fatigue characteristics of the formed joints relative to the base metal is obtained. Equivalent Kt was used to characterize the fatigue properties of formed joints

and the equivalent stress concentration factor Kte of formed joints was obtained. Compared with the welding process

the forming connection process has better fatigue characteristics.

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