Towards a high strength aluminium alloy development methodology for selective laser melting

Jia, Qingbo; Rometsch, Paul; Cao, Sheng; Zhang, Kai; Wu, Xinhua

doi:10.1016/j.matdes.2019.107775

Cited by 117 publications

(39 citation statements)

References 43 publications

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“…Some authors are proposing While additive manufacturing has plenty of benefits and offers new geometry possibilities, being a new technology very promising especially for LCE and EoL activities, it still has quite a few drawbacks too. For example, the high cost of the materials used for AM process, the high level of precision required and relatively slow development of combining AM with subtractive processes, the low amount of information on material behaviour, as well as standardisation provide ample opportunities for research, optimisation, and sustainability [55][56][57][58][59].…”

Section: Methods For Mam Sustainability Performance and Applicabilitymentioning

confidence: 99%

A Deep Look at Metal Additive Manufacturing Recycling and Use Tools for Sustainability Performance

et al. 2019

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The present study refers to 3D metal additive manufacturing (MAM) from an interdisciplinary perspective, providing an overview on sustainability, basic principles, and a conceptual framework on environmental performance, implicit constraints regarding materials, recycling and use/reuse tools for extended life cycle, regarded as the trendiest manufacturing processes in terms of material consumptions efficacy and energy efficiency. The demand for integrating MAM technology as a means to boosting sustainability in industry is based on its capacity to use smart or custom-designed materials to generate special geometries, unobtainable otherwise, allowing for further part optimisation or redesign. The outlined advantages and challenges of the new MAM processes and advanced technologies for functional objects and durable products underline the high interest in this area. Results from the literature and our MAM research interest indicate that some metal powder (MP) recycling and use/reuse technologies could be developed to save MP, as could MAM applications in component redesign and repairs to increase sustainability. The achievement has a high degree of generality and serves as a basis for future MAM sustainable methods.

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Section: Methods For Mam Sustainability Performance and Applicabilitymentioning

confidence: 99%

A Deep Look at Metal Additive Manufacturing Recycling and Use Tools for Sustainability Performance

et al. 2019

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“…At present, the majority of additive manufacturing of aluminum-based alloys involves commercial grades such as AlSi7Mg, AlSi12, and AlSi10Mg (wt.%), designed for conventional casting. An attempt is shown in Figure 31, where novel Al−Mn−Sc alloys were evaluated by selective laser melting [142]. Due to formation of the primary Al 3 (Sc,Zr) particles at the molten pool boundaries, the Al−Mn−Sc alloys developed a fine columnar-equiaxed bimodal grain structure with high thermal stability.…”

Section: Additive Manufacturingmentioning

confidence: 99%

“…melting [142]. Due to formation of the primary Al3(Sc,Zr) particles at the molten pool boundaries, the Al−Mn−Sc alloys developed a fine columnar-equiaxed bimodal grain structure with high thermal stability.…”

Section: Additive Manufacturingmentioning

confidence: 99%

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Thermal Stability of Aluminum Alloys

Czerwiński

2020

Materials

136

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Thermal stability, determining the material ability of retaining its properties at required temperatures over extended service time, is becoming the next frontier for aluminum alloys. Its improvement would substantially expand their range of structural applications, especially in automotive and aerospace industries. This report explains the fundamentals of thermal stability; definitions, the properties involved; and the deterioration indicators during thermal/thermomechanical exposures, including an impact of accidental fire, and testing techniques. For individual classes of alloys, efforts aimed at identifying factors stabilizing their microstructure at service temperatures are described. Particular attention is paid to attempts of increasing the current upper service limit of high-temperature grades. In addition to alloying aluminum with a variety of elements to create the thermally stable microstructure, in particular, transition and rare-earth metals, parallel efforts are explored through applying novel routes of alloy processing, such as rapid solidification, powder metallurgy and additive manufacturing, engineering alloys in a liquid state prior to casting, and post-casting treatments. The goal is to overcome the present barriers and to develop novel aluminum alloys with superior properties that are stable across the temperature and time space, required by modern designs.

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“…However, the ultra-high cooling rate of 10 3 -10 5 K/s helps to inhibit the nucleation and recrystallisation of primary intermetallic particles. [21][22][23] Another advantage of the high cooling rate is the potential formation of a supersaturated solid solution (SSSS). Stability of the SSSS is one of the most important factors for heat-resistant alloys.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Microstructure and Hardness of Novel Al-Fe-Ni Alloys with High Thermal Stability for Laser Additive Manufacturing

Логинова

Sazerat

Логинов

et al. 2020

JOM

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The microstructure and phase composition of cast and laser-melted Al-Fe-Ni alloys were investigated. Two main phases-Al 3 (Ni,Fe) and Al 9 FeNi-were formed in the as-cast state. A fine microstructure without porosity or solidification cracks was observed in the Al-Fe-Ni alloys after laser treatment. The hardness of the laser-melted alloys was 2.5-3 times higher than the hardness of the as-cast alloys owing to the formation of an aluminum-based solid solution and fine eutectic particles. The formation of the primary Al 9 FeNi phase was suppressed as a result of the high cooling rate. Annealing these alloys at temperatures less than 300°C demonstrated the high thermal stability of the microstructure while maintaining the hardness. The Al-Fe-Ni alloys investigated in this study are promising heat-resistant materials for additive manufacturing because of their fine, stable structure, and the low interdiffusion coefficients of Fe and Ni.

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Towards a high strength aluminium alloy development methodology for selective laser melting

Cited by 117 publications

References 43 publications

A Deep Look at Metal Additive Manufacturing Recycling and Use Tools for Sustainability Performance

A Deep Look at Metal Additive Manufacturing Recycling and Use Tools for Sustainability Performance

Thermal Stability of Aluminum Alloys

Evaluation of Microstructure and Hardness of Novel Al-Fe-Ni Alloys with High Thermal Stability for Laser Additive Manufacturing

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