Novel heat-resistant Al-Si-Ni-Fe alloy manufactured by selective laser melting

被引：33
作者：
Rafael Manca, Dario [1 ,4 ]
Churyumov, A. Yu. [1 ]
Pozdniakov, A. V. [1 ]
Ryabov, D. K. [2 ]
Korolev, V. A. [3 ]
Daubarayte, D. K. [3 ]
机构：
[1] NUST MISiS, Leninsky Ave 4, Moscow 119991, Russia
[2] RUSAL Global Management BV, VasilisyKozhinoist 1, Moscow 121096, Russia
[3] LLC Light Mat & Technol Inst UC RUSAL, Leninsky Ave 6b21, Moscow 119991, Russia
[4] Univ Nacl La Plata, Ave 7 776, RA-1900 La Plata, Buenos Aires, Argentina
来源：
MATERIALS LETTERS | 2019年 / 236卷
关键词：
Al-Si-Ni-Fe; Selective laser melting; Aluminium; Alloy; Additive manufacturing; Microstructure; MICROSTRUCTURE; POWDER; FATIGUE; SLM;
D O I：
10.1016/j.matlet.2018.11.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The novel Al-Si-Ni-Fe alloy with high compression strength at elevated temperatures has been successfully produced by selective laser melting at an average volumetric energy density of about 100 J/mm(3) and has a relative density of 99,86%. The hardness of as fabricated Al-Si-Ni-Fe alloy is 186HV and it decreases during heat treatment to 124HV due to stress relief and silicon particle growth. The yield compression stress is 355 MPa at 200 degrees C. This high strength is provided by the fine structure formed by the Si, Al5Fe (Ni,Cu) and Al-3(Ni,Cu) phases. The good strength properties of the alloy at elevated temperatures make it a quite promising lightweight material for high temperature applications. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：676 / 679
页数：4
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