Effect of Heat Treatment on the Microstructure and Mechanical Properties of Al-7Si-0.7Mg2.5Fe Processed by Laser Powder Bed Fusion

被引：0
|
作者：
Pereira, Leandro [1 ]
Bomfim, Pamela [1 ]
Otani, Lucas [1 ]
Freitas, Brenda [1 ]
Botta, Walter [1 ,2 ]
Bolfarini, Claudemiro [1 ,2 ]
Kiminami, Claudio [1 ,2 ]
Gargarella, Piter [1 ,2 ,3 ]
机构：
[1] Univ Fed Sdo Carlos UFSCar, Programa Posgrad Ciencia & Engn Mat, Km 235 Rod Washington Luis, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sdo Carlos UFSCar, Dept Engn Mat DEMa, Rod Washington Luis,Km 235, BR-13565905 Sao Carlos, SP, Brazil
[3] Univ Fed Sdo Carlos UFSCar, Ctr Caracterizacdo & Desenvolvimento Mat CCDM, Rod Washington Luiz,km 235, BR-13565905 Sao Carlos, SP, Brazil
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2024年 / 27卷
基金：
巴西圣保罗研究基金会;
关键词：
Laser Powder Bed Fusion; Al-based alloys; heat treatment; AlFeSi intermetallics; mechanical properties; ALSI10MG ALLOY; INTERMETALLIC PHASES; IRON; POROSITY; SYSTEM; MN;
D O I：
10.1590/1980-5373-MR-2024-0206
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper investigates the effect of Fe contamination on the microstructure and mechanical properties of Al-7Si-0.7Mg-Fe2.5 alloy processed by Laser Powder Bed Fusion (LPBF) and heat treated in two different conditions: (1) Solution Heat Treatment (SHT) at 520 degrees C, followed by artificial ageing at 160 degrees C (T6), and (2) Direct Artificial Ageing of the as-printed material at 160 degrees C (DAA). characterization was carried out by tensile tests at room temperature. The formation of fine AlSiFe phases such as alpha-AlFeSi and (3-AlFeSi had no deleterious effect on the mechanical properties compared to previous studies for AlSiMg alloys without Fe. However, compared to the as-printed condition, the T6 heat treated sample decreased the ultimate tensile strain significantly, while the elongation to the fracture presented a slight improvement.
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页数：12
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