An additively manufactured Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy with high specific strength, good thermal stability and excellent corrosion resistance

Bi, Jing; Lei, Zhenglong; Chen, Yanbin; Chen, Xi; Lu, Nannan; Tian, Ze; Qin, Xikun

doi:10.1016/j.jmst.2020.06.036

Cited by 88 publications

(18 citation statements)

References 68 publications

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“…Bai et al [315] studied the mechanical properties of an as-built SLMed AlSiMg 0.75 alloy in comparison to its annealed and cast counterparts, indicating the higher yield strength and tensile strength, but lower elongation, of the as-built alloy. This result was contradictory to the results reported by Bi et al [279] for the Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy. The tensile properties of this alloy increased after heat treatment due to combination of fine grain strengthening, solid solution strengthening and precipitate strengthening.…”

Section: Laser-processed Al Alloyscontrasting

confidence: 99%

“…The mechanical properties of SLM as-built and heat-treated Al alloys at room and elevated temperatures has been reported in [192,263,265,266,279,281,283,288,. Laserprocessed Al alloys showed twice higher yield strength than as-cast Al alloys and comparable strength to age-hardened wrought Al alloys [289].…”

Section: Laser-processed Al Alloysmentioning

confidence: 99%

“…Since much of the energy is reflected or conducted away from the melt pool region, processing of these materials requires a very high beam energy to achieve a proper melt. The feasibility of fabricating Al alloys using laser powder bed fusion AM has been studied by many researchers [265][266][267][268][269][270][271][272][273][274][275][276][277][278][279][280][281][282][283][284]. Most of the research in the literature has been focused on optimizing the process to achieve quality parts.…”

Section: Laser-processed Al Alloysmentioning

confidence: 99%

“…There are limited studies on the corrosion behavior of powder bed fusion additive manufactured Al alloys [279,291,317]. Bi et al [279] evaluated the corrosion performance of the SLM-fabricated Al-14.1Mg-0.47Si-0.31Sc-0.17 Zr alloy in comparison to its heat-treated counterpart in 3.5 wt.% NaCl solution. The as-built Al alloy exhibited an excellent corrosion resistance due to its fine grain size of 2.53 µm.…”

Section: Corrosion Behavior Of Powder Bed Fusion Additive Manufactured Al Alloysmentioning

confidence: 99%

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Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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Additive manufacturing (AM) as a disruptive technology has received much attention in recent years. In practice, however, much effort is focused on the AM of polymers. It is comparatively more expensive and more challenging to additively manufacture metallic parts due to their high temperature, the cost of producing powders, and capital outlays for metal additive manufacturing equipment. The main technology currently used by numerous companies in the aerospace and biomedical sectors to fabricate metallic parts is powder bed technology, in which either electron or laser beams are used to melt and fuse the powder particles line by line to make a three-dimensional part. Since this technology is new and also sought by manufacturers, many scientific questions have arisen that need to be answered. This manuscript gives an introduction to the technology and common materials and applications. Furthermore, the microstructure and quality of parts made using powder bed technology for several materials that are commonly fabricated using this technology are reviewed and the effects of several process parameters investigated in the literature are examined. New advances in fabricating highly conductive metals such as copper and aluminum are discussed and potential for future improvements is explored.

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Section: Laser-processed Al Alloyscontrasting

confidence: 99%

Section: Laser-processed Al Alloysmentioning

confidence: 99%

Section: Laser-processed Al Alloysmentioning

confidence: 99%

Section: Corrosion Behavior Of Powder Bed Fusion Additive Manufactured Al Alloysmentioning

confidence: 99%

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Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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“…Heat treatments also affect the corrosion resistance. The growth of cathodic micron-scale Al 3 (Sc,Zr) and/ or Mg 2 Si precipitates during aging of Al-14.1Mg-0.47Si-0.31Sc-0.17Zr [95] and Al-4.2 Mg-0.4Sc-0.2Zr [333] alloys degrades the passivating oxide layer and leads to the formation of small electrochemical cells, increasing the corrosion currents relative to the as-printed alloys (Figure 22(e,f)). From an alloy design perspective, it is fortunate that favourable properties for high-temperature mechanical strength (i.e.…”

Section: Corrosion Propertiesmentioning

confidence: 99%

Towards high-temperature applications of aluminium alloys enabled by additive manufacturing

Michi

Plotkowski

Shyam

et al. 2021

International Materials Reviews

134

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Research on powder-based additive manufacturing of aluminium alloys is rapidly increasing, and recent breakthroughs in printing of defect-free parts promise substantial movement beyond traditional Al-Si-Mg) systems. One potential technological advantage of aluminium additive manufacturing, however, has received little attention: the design of alloys for use at T >~200°C, or~1/2 of the absolute melting temperature of aluminium. Besides offering lightweighting and improved energy efficiency through replacement of ferrous, titanium, and nickel-based alloys at 200-450°C, development of such alloys will reduce economic roadblocks for widespread implementation of aluminium additive manufacturing. We herein review the existing additive manufacturing literature for three categories of potential hightemperature alloys, discuss strategies for optimizing microstructures for elevatedtemperature performance, and highlight gaps in current research. Although extensive microstructural characterisation has been performed on these alloys, we conclude that evaluations of their high-temperature mechanical properties and corrosion responses are severely deficient.

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Effect of Annealing on the Microstructure, Mechanical Properties, and Intergranular Corrosion of a Novel Al–Mg–Zn Alloy

Gao,

Wei,

Huang

et al. 2024

Adv Eng Mater

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The effect of annealing on the mechanical properties, intergranular corrosion (IGC) properties, and microstructure of Al–Mg–Zn alloys is studied. The results show that with the increase of annealing temperature, the strength of the alloy decreases, the elongation increases, and the corrosion resistance firstly increases and then decreases. The alloy exhibits a high corrosion resistance and good mechanical properties when the annealing treatment is 270 °C for 2 h. Meanwhile, the IGC mass loss value is less than 15 mg cm−2. In addition, the ultimate tensile strength, yield strength, and elongation are 416, 250 MPa, and 16.0%, respectively. The T‐Mg32(Al, Zn)49 phases are directly precipitated when annealing at 270 °C for 2 h. After sensitization, T phase gradually grows and coarsens. When the alloy is annealing at 400 °C for 2 h, a part of T phase gradually dissolves in the Al matrix. After sensitization, the Mg atoms with higher supersaturation gradually diffuse to grain boundary by bulk diffusion due to the low dislocation density and form a thin precipitate film, which deteriorates the corrosion resistance of the alloy. The details of corrosion mechanism analysis are as follows.

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An additively manufactured Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy with high specific strength, good thermal stability and excellent corrosion resistance

Cited by 88 publications

References 68 publications

Review of Powder Bed Fusion Additive Manufacturing for Metals

Review of Powder Bed Fusion Additive Manufacturing for Metals

Towards high-temperature applications of aluminium alloys enabled by additive manufacturing

Effect of Annealing on the Microstructure, Mechanical Properties, and Intergranular Corrosion of a Novel Al–Mg–Zn Alloy

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