Fatigue analysis of as-built and heat-treated severely notched AlSi10Mg alloy specimens made by laser powder bed fusion technology

被引：4
|
作者：
Razavi, Nima [1 ]
Bagherifard, Sara [1 ,2 ]
Hafnor, Sondre [1 ]
Spiller, Saveria [1 ]
Guagliano, Mario [2 ]
Berto, Filippo [1 ,3 ]
机构：
[1] Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Trondheim, Norway
[2] Politecn Milan, Dept Mech Engn, Milan, Italy
[3] Sapienza Univ Rome, Dept Chem Engn Mat Environm, Rome, Italy
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2024年 / 179卷
关键词：
Additive manufacturing; selective laser melting (SLM); Fatigue; Notch; Heat treatment; CRACK PROPAGATION BEHAVIOR; HIGH-CYCLE FATIGUE; MECHANICAL-PROPERTIES; ORIENTATION; MICROSTRUCTURE; PARTS; ALUMINUM; STRENGTH;
D O I：
10.1016/j.ijfatigue.2023.108041
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This study examines L-PBF-fabricated aluminium alloy specimens with smooth and notched geometries, assessing their axial fatigue performance in both as-built and heat-treated conditions. The influence of the performed heat treatment on microstructure, production defects and fatigue properties was investigated on unnotched specimens and specimens with deep U-notch geometry. The experimental results revealed significant impact of heat treatment on the microstructure and internal defects, which resulted in an enhancement of fatigue properties of the specimens. Lastly, the fatigue results revealed a negligible impact of the employed heat treatment on the notch sensitivity of the studied materials.
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收藏
页数：10
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