Design, microstructure and thermal stability of a novel heat-resistant Al-Fe-Ni alloy manufactured by selective laser melting

被引：42

作者：

Ding, Han ^{[1
]}

Xiao, Yakai ^{[1
]}

Bian, Zeyu ^{[1
]}

Wu, Yi ^{[2
]}

Yang, Huihui ^{[2
]}

Wang, Hongze ^{[2
]}

Wang, Haowei ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 885卷

基金：

中国国家自然科学基金;

关键词：

Selective laser melting; Al-Fe-Ni alloy; Heat treatment; Microstructure evolution; Hardness; MECHANICAL-PROPERTIES; PRECIPITATION; STRENGTH; EVOLUTION; KINETICS; PARAMETERS; BEHAVIOR; CRACKING;

D O I：

10.1016/j.jallcom.2021.160949

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Selective laser melting (SLM) technology is promising to fabricate complex-shaped metal components, especially light-weight aluminum (Al) alloy. Facing the grow requirement of thermal stability for applications in aviation and aerospace at high temperatures, the poor thermal stability of Al alloy needs to be improved. Thus, in this study, we developed a novel heat-resistant eutectic Al-Fe-Ni alloy which is suitable for the SLM process. Firstly, the composition of Al-1.75Fe-1.25Ni (wt%) alloy was designed and confirmed through the calculation of hot crack susceptibility index vertical bar dT/d(f(s)(0.)(5))vertical bar and the analysis of the as-cast microstructure. Then, the designed alloy was fabricated using the optimized SLM processing parameters. Finally, the effects of heat treatment on microstructure evolution and phase stability during thermal exposure were investigated. Results show that the SLMed alloy is consisted of alpha-Al and cellular eutectic Al9FeNi phases. The fine grain structure and nano-sized Al9FeNi phase of the SLMed sample result in high hardness which is more than twice higher than that of the as-cast sample. During long-term thermal exposure at 300 degrees C, the fine grain structure and cellular eutectic phase remain almost unchanged, and thus, the hardness of the alloy can be kept stable. When the exposure temperature further increased, the fine grains gradually grew up and the cellular Al9FeNi phases were gradually collapsed and coarsened. Heat treatment at such high temperature (above 400 degrees C) resulted in microstructure coarsening and formation of large-sized rod-like or spherical phases, which significantly degraded the hardness. The novel heat-resistant Al-Fe-Ni alloy together with the alloy composition design method provides new insight into light-weight and complex-shaped components produced by the SLM process for high-temperature applications. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：10

共 47 条

[1] On the Precipitation Hardening of Selective Laser Melted AlSi10Mg [J].

Aboulkhair, Nesma T. ;

Tuck, Chris ;

Ashcroft, Ian ;

Maskery, Ian ;

Everitt, Nicola M. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2015, 46A (08) :3337-3341

[2] Microstructure evolution during in-situ heating of AlSi10Mg alloy powders and additive manufactured parts [J].

Albu, Mihaela ;

Krisper, Robert ;

Lammer, Judith ;

Kothleitner, Gerald ;

Fiocchi, Jacopo ;

Bassani, Paola .

ADDITIVE MANUFACTURING, 2020, 36

[3] Post heat treatment of additive manufactured AlSi10Mg: On silicon morphology, texture and small-scale properties [J].

Alghamdi, F. ;

Song, X. ;

Hadadzadeh, A. ;

Shalchi-Amirkhiz, B. ;

Mohammadi, M. ;

Haghshenas, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 783

[4]

[Anonymous], 2015, ASTM5290015 ASTM INT

[5] Regulating microstructures and mechanical properties of Al-Fe-Ni alloys [J].

Bian, Zeyu ;

Liu, Yingtao ;

Dai, Shihan ;

Chen, Zhe ;

Wang, Mingliang ;

Chen, Dong ;

Wang, Haowei .

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2020, 30 (01) :54-62

[6] Stimulated heterogeneous distribution of Sc element and its correlated local hardening effect in Al-Fe-Ni-Sc alloy [J].

Bian, Zeyu ;

Xiao, Yakai ;

He, Lei ;

Liu, Yingtao ;

Chen, Zhe ;

Wang, Mingliang ;

Chen, Dong ;

Wang, Haowei .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 771

[7] Thermal stability of Al-Fe-Ni alloy at high temperatures [J].

Bian, Zeyu ;

Dai, Shihan ;

Wu, Liang ;

Chen, Zhe ;

Wang, Mingliang ;

Chen, Dong ;

Wang, Haowei .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2019, 8 (03) :2538-2548

[8] Selective laser melting of AlSi10 Mg: Influence of process parameters on Mg2Si precipitation and Si spheroidization [J].

Biffi, C. A. ;

Fiocchi, J. ;

Tuissi, A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 755 :100-107

[9] DEPENDENCE OF OSTWALD RIPENING KINETICS ON PARTICLE-VOLUME FRACTION [J].

BRAILSFORD, AD ;

WYNBLATT, P .

ACTA METALLURGICA, 1979, 27 (03) :489-497

[10] Interrelation of cell spacing, intermetallic compounds and hardness on a directionally solidified Al-1.0Fe-1.0Ni alloy [J].

Cante, Manuel V. ;

Brito, Crystopher ;

Spinelli, Jose E. ;

Garcia, Amauri .

MATERIALS & DESIGN, 2013, 51 :342-346

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