Microstructures and mechanical property of AlMgScZrMn - A comparison between selective laser melting, spark plasma sintering and cast

Wang, Minbo; Li, Ruidi; Yuan, Tiechui; Chen, Chao; Zhou, Libo; Chen, Hui; Zhang, Mei; Xie, Siyao

doi:10.1016/j.msea.2019.04.060

Cited by 32 publications

(13 citation statements)

References 35 publications

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“…As shown in Fig. 10(b) and summarized in Table 2, d clearly affects the tensile strength, reaching a value more than twice the tensile strength of casted Scalmalloy, which had an average grain size of 25 lm with agglomerated precipitations [34]. Furthermore, it was observed that the UTS increased with decreasing d from 0.1 to 0.06 mm, indicating the activation of multiple strengthening mechanisms due to differences in the volume fraction of UFGs and precipitates; this is discussed in Section 4.3.…”

Section: Resultsmentioning

confidence: 91%

Excellent strength–ductility balance of Sc-Zr-modified Al–Mg alloy by tuning bimodal microstructure via hatch spacing in laser powder bed fusion

et al. 2022

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Section: Resultsmentioning

confidence: 91%

Excellent strength–ductility balance of Sc-Zr-modified Al–Mg alloy by tuning bimodal microstructure via hatch spacing in laser powder bed fusion

et al. 2022

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“…The hardness of AlCoCrCuFeNi improved from 500 to 710 Hv [194] by using SLM. The YS of AlMgScZrMn manufactured with arc melting, SPS, and SLM is 188 ± 2.3 MPa, 231 ± 3 Mpa and 394 Mpa respectively [195]. Agrawal et al [197] reported that the YS of as-cast and SLM-printed Fe 40 Mn 20 Co 20 Cr 15 Si 5 was 420 ± 20 Mpa and 530 ± 40 Mpa, respectively.…”

Section: Additive Manufacturing Of Heasmentioning

confidence: 99%

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

Sonal

Lee

2021

Metals

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Alloying has been very common practice in materials engineering to fabricate metals of desirable properties for specific applications. Traditionally, a small amount of the desired material is added to the principal metal. However, a new alloying technique emerged in 2004 with the concept of adding several principal elements in or near equi-atomic concentrations. These are popularly known as high entropy alloys (HEAs) which can have a wide composition range. A vast area of this composition range is still unexplored. The HEAs research community is still trying to identify and characterize the behaviors of these alloys under different scenarios to develop high-performance materials with desired properties and make the next class of advanced materials. Over the years, understanding of the thermodynamics theories, phase stability and manufacturing methods of HEAs has improved. Moreover, HEAs have also shown retention of strength and relevant properties under extreme tribological conditions and radiation. Recent progresses in these fields are surveyed and discussed in this review with a focus on HEAs for use under extreme environments (i.e., wear and irradiation) and their fabrication using additive manufacturing.

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“…However, traditional highstrength Al alloys, such as Al-Cu, Al-Mg, Al-Zn alloys, have wide solidification temperature rage and indelible hot cracking under the rapid solidification characteristics of LPBF. [11][12][13][14] Most researches are focused on eutectic Al-Si alloy with good hot crack resistance, but its weak mechanical properties limit its further industrial application. [15,16] Nowadays, a Sc/Zr-modified Al-Mg alloy has attracted extensive attention for both splendid strength and hot crack resistance.…”

Section: Introductionmentioning

confidence: 99%

High Cycle Fatigue Property of Al–Mg–Sc–Zr Alloy Fabricated by Laser Powder Bed Fusion

et al. 2023

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Laser powder bed fusion (LPBF) of high‐strength Al–Mg–Sc–Zr alloy possesses great potential application in the aerospace industry. However, fatigue performance has become a very important issue in the safety and durability design of engineering structures. Herein, the high cycle fatigue property of LPBF‐fabricated Al–Mg–Sc–Zr alloy and its correlation with defects, microstructure, and precipitated phases are studied. The LPBF‐manufactured Al–Mg–Sc–Zr alloy appears heterogeneous structure composed of equiaxed grains at the molten pool boundary and columnar grains at the inner of the molten pool. After aging treatment (325 °C/4 h), the nanosized Al3Sc intragranular particles and Mn‐rich intergranular particles are precipitated, leading to more difficult movement of dislocations that favors the fatigue strength. The ultimate tensile strength of the samples after aging treatment is 507.05 MPa and corresponding 107 cycle fatigue strength (R = −1) is 106 MPa. The fracture morphology of the fatigue specimens shows that the fatigue cracks start from the surface defects with strong stress concentration, especially the lack of fusions, and then expand through the surplus part.

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Microstructures and mechanical property of AlMgScZrMn - A comparison between selective laser melting, spark plasma sintering and cast

Cited by 32 publications

References 35 publications

Excellent strength–ductility balance of Sc-Zr-modified Al–Mg alloy by tuning bimodal microstructure via hatch spacing in laser powder bed fusion

Excellent strength–ductility balance of Sc-Zr-modified Al–Mg alloy by tuning bimodal microstructure via hatch spacing in laser powder bed fusion

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

High Cycle Fatigue Property of Al–Mg–Sc–Zr Alloy Fabricated by Laser Powder Bed Fusion

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