An Ultra-High Strength Over 700 MPa in Al-Mn-Mg-Sc-Zr Alloy Fabricated by Selective Laser Melting

Tang, Hao; Geng, Yaoxiang; Bian, Shunuo; Xu, Jie; Zhang, Zhijie

doi:10.1007/s40195-021-01286-2

Cited by 33 publications

(4 citation statements)

References 62 publications

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“…Alloying element-wise tensile yield strength and elongation of selected high-strength alloys [11,14,38,[41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. TE-transition element(s), AB-as-built, SA-solution treated and aged, DA-Direct aged.…”

Section: Figurementioning

confidence: 99%

Additively Manufactured High-Strength Aluminum Alloys: A Review

Zafar¹,

Reis²,

Vieira³

et al. 2024

Recent Advancements in Aluminum Alloys

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This chapter summarizes the recent advances in additive manufacturing of high-strength aluminum alloys, the challenges of printability, and defects in their builds. It further intends to provide an overview of the state of the art by outlining potential strategies for the fabrication of bulk products using these alloys without cracking. These strategies include identifying a suitable processing window of additive manufacturing using metallic powders of conventional high-strength aluminum alloys, pre-alloying the powders, and developing advanced aluminum-based composites with reinforcements introduced either by in situ or ex situ methods. The resulting microstructures and the relationship between these alloys’ microstructure and mechanical properties have been discussed. Since post-processing is inevitable in several critical applications, the chapter concludes with a brief account of post-manufacturing heat treatment processes of additively manufactured aluminum alloys.

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Section: Figurementioning

confidence: 99%

Additively Manufactured High-Strength Aluminum Alloys: A Review

Zafar¹,

Reis²,

Vieira³

et al. 2024

Recent Advancements in Aluminum Alloys

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“…In recent years, LPBF-processed single-metal materials have gradually matured. These include aluminium-based alloys [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], titanium-based alloys [ 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ], copper and copper-based alloys [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ], nickel-based alloys [ 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ], iron-based alloys [ 61 , ...…”

Section: Introductionmentioning

confidence: 99%

Laser Powder Bed Fusion of Dissimilar Metal Materials: A Review

Guan

Wang

2023

Materials

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The laser powder bed fusion (LPBF) technique is used to manufacture complex and customised components by exploiting the unique advantages of two types of metal materials to meet specific performance requirements. A comprehensive overview of LPBF-processed dissimilar metal materials, a combination of different single metals or alloys, is developed. The microstructure in the fusion zone and the corresponding mechanical properties of LPBF-processed dissimilar metal materials are summarised. The influence of processing factors on the mechanism of defect formation, wetting properties and element diffusion behaviour at the interface between different materials and their typical cases are scientifically investigated in detail. Particular attention is paid to energy input, Marangoni convection and interfacial bonding behaviour. The underlying science of the metallurgical structure and properties of the LPBF-processed dissimilar metal materials is revealed. The build quality and efficiency could be further improved by designing machine structures and predicting the process–property relationship. This review provides a significant guide for expanding the industrial application of LPBF-processed dissimilar metal materials.

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“…It was found that the strength improved by ~50-100 MPa compared to its counterparts printed using the 35 • C platform. It was further suggested that such a strength improvement was attributed to the coarsening of the Cu-rich particles that are expectedly over-aged at a temperature higher than 250 • C, rather than Al 3 Sc precipitation that typically reaches the peak at similar temperatures [29,[34][35][36]. Yet, the nucleation of the Al 3 Sc-type precipitates has been found to commence in the lower temperature range of 200-250 • C [37].…”

Section: Introductionmentioning

confidence: 99%

Effective Platform Heating for Laser Powder Bed Fusion of an Al-Mn-Sc-Based Alloy

Bayoumy,

Boll,

Karapuzha

et al. 2023

Materials

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Platform heating is one of the effective strategies used in laser powder bed fusion (LPBF) to avoid cracking during manufacturing, especially when building relatively large-size components, as it removes significant process-induced residual strains. In this work, we propose a novel and simple method to spare the elaborate post-processing heat treatment typically needed for LPBF Al-Sc alloys without compromising the mechanical properties. We systematically investigated the effects of LPBF platform heating at 200 °C on the residual stress relief, microstructure, and mechanical performance of a high-strength Al-Mn-Sc alloy. The results reveal that LPBF platform heating at 200 °C is sufficient to largely relieve the process-induced residual stresses compared to parts built on an unheated 35 °C platform. Meanwhile, the platform heating triggered the dynamic precipitation of uniformly dispersed (1.5–2 nm) Sc-rich nano-clusters. Their formation in a high number density (1.75 × 1024 m−3) resulted in a ~20% improvement in tensile yield strength (522 MPa) compared to the build on the unheated platform, without sacrificing the ductility (up to 18%). The improved mechanical properties imply that platform heating at 200 °C can strengthen the LPBF-synthesised Sc-containing Al alloys via in situ aging, which is further justified by an in situ measurement study revealing that the developing temperatures in the LPBF part are within the aging temperature range of Al-Sc alloys. Without any post-LPBF treatments, these mechanical properties have proven better than those of most Al-Sc alloys through long-time post-LPBF heat treatment.

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An Ultra-High Strength Over 700 MPa in Al-Mn-Mg-Sc-Zr Alloy Fabricated by Selective Laser Melting

Cited by 33 publications

References 62 publications

Additively Manufactured High-Strength Aluminum Alloys: A Review

Additively Manufactured High-Strength Aluminum Alloys: A Review

Laser Powder Bed Fusion of Dissimilar Metal Materials: A Review

Effective Platform Heating for Laser Powder Bed Fusion of an Al-Mn-Sc-Based Alloy

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