Selective Laser Melting of Al-7Si-0.5 Mg-0.5Cu: Effect of Heat Treatment on Microstructure Evolution, Mechanical Properties and Wear Resistance

Wang, Pei; Yu, Sijie; Shergill, Jaskarn; Chaubey, Anil Kumar; Eckert, Jürgen; Prashanth, Konda Gokuldoss; Scudino, Sergio

doi:10.1007/s40195-021-01279-1

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…Wang et al [19] also noted that the nano-sized Al 2 CuMg and Mg 2 Si phases precipitated in the matrix after the T6 heat treatment and enhanced the wear resistance of the LPBF processed Al-3.5Cu-1.5Mg-1Si alloy. However, LPBF-deposited Al-7Si-0.5Mg-0.5Cu alloy presented the best wear resistance compared to the samples subjected to solution-treated and quenched (SQ) or subsequent aging after solution-treated and quenched (SQA) heat treatment [28]. In addition, for our designed Al-Cu-Mg-Si-Ti alloy, a novel Q' (Al-Cu-Mg-Si quaternary phase) was introduced to enhance the matrix and improve the tensile properties.…”

Section: Introductionmentioning

confidence: 96%

Nanoprecipitates enhanced wear resistance of laser powder bed fusion-processed high-strength Al−Cu−Mg−Si−Ti alloy

WANG¹,

Mansori²,

Hadrouz³

et al. 2023

Surf. Topogr.: Metrol. Prop.

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Solidification cracking during laser powder bed fusion (LPBF) and poor wear resistance of high-strength aluminum alloys hinder their application in aerospace and automotive fields. In the present work, a novel defect-free Al-Cu-Mg-Si-Ti alloy was manufactured by LPBF. The densification behavior research shows that the threshold value to manufacture the full-density Al-Cu-Mg-Si-Ti alloy by LPBF is a volumetric energy density (VED) of 141.7 J/mm3. The LPBF processed sample shows a heterogeneous microstructure consisting of ultrafine equiaxed grains and columnar grains. Dry sliding tests indicate that the wear rate of the as-built samples is 3.9 ± 0.4 × 10-5 cm3/m with dominant abrasive wear under an applied load of 2.1 N. At an applied load of 24 N, the wear mechanism transforms to severe delamination and abrasion with a high wear rate of 42.1 ± 0.1 × 10-5 cm3/m. After the aging treatment, the size and number density of nanosized S’ and Q’ precipitated phases increase significantly, which results in an increased hardness and better wear resistance.

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Section: Introductionmentioning

confidence: 96%

Nanoprecipitates enhanced wear resistance of laser powder bed fusion-processed high-strength Al−Cu−Mg−Si−Ti alloy

WANG¹,

Mansori²,

Hadrouz³

et al. 2023

Surf. Topogr.: Metrol. Prop.

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“…The matching ORs (interatomic spacing misfit (f r ) < 10% and interplanar spacing mismatch (f d ) < 6% [22,23]) would be theoretically indentified, which means a minimize interfacial free energy [24,25], just as TiB 2 for Al grains [26], Al 2 RE for Mg grains [27] and CrFeNb for Ni grains [28] and so on. When the nucleation crystallography analysis is done, the experiments would go on then [29]. The nucleation investigation could be done more efficiently.…”

Section: Introductionmentioning

confidence: 99%

Crystallographic Study of Grain Refinement in Ni Alloys with Ni-RE Intermetallics

Zhong,

Wu,

Zha

et al. 2023

J. Phys.: Conf. Ser.

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Rare earth-doped nickel (Ni-RE) alloys are very attractive for the neutron shielding application for excellent neutron absorption and good mechanical behavior. Ni-RE intermetallics are important for their precipitation reinforcement in Ni alloys. In this work, Ni-RE intermetallics have been founded to be Ni grain refiners, which has been proved both by nucleation crystallography analysis and experiments. Ni-RE intermetallics could work as heterogeneous nucleation well, either different in atomic structures (for example, Ni17RE2, Ni5RE, Ni7RE2, Ni3RE, Ni2RE having matching orientation relationships as (111)Ni // (0004)Ni17Gd2 with [ 1 1 ¯ 0 ] Ni / / [ 01 1 ¯ 0 ] Ni17Gd2 , (111)Ni // (0002)Ni5Gd with [ 1 1 ¯ 0 ] Ni / / [ 01 1 ¯ 0 ] Ni 5Gd , (111)Ni // (00018)Ni7Gd2 with [ 1 1 ¯ 0 ] Ni / / [ 01 1 ¯ 0 ] Ni7Gd2 , (111)Ni // (00012)Ni3Gd with [ 1 1 ¯ 0 ] Ni / / [ 01 1 ¯ 0 ] Ni3Gd , (111)Ni // (222)Ni2Gd with [ 1 1 ¯ 0 ] Ni / / [ 1 1 ¯ 0 ] Ni2Gd ) or different in rare earth element (for example, (111)Ni // (0002)Ni5RE with [ 1 1 ¯ 0 ] Ni / / [ 01 1 ¯ 0 ] Ni5RE is general matching orientation relationships (ORs) of Ni5RE (RE = Sc, Y, La ~ Lu) for Ni grains). When RE dopant mass fraction is 1 wt%, the grain size is reduced from ~50 μm to 15 μm, and the refinement effect reaches the best. The work proposes Ni-RE intermetallics as good heterogeneous nuclei for Ni grains with an atomic level understanding and provides theoretical guidance for high-strength nickel alloy design.

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“…SLM/LPBF offers the possibility to fabricate a wide variety of materials directly from metal powder (such as Al-based alloys [17][18][19][20][21], Ti-based alloys [22][23][24][25], Ni-based [26][27][28][29],…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Corrosion Behavior of 06Cr15Ni4CuMo Processed by Using Selective Laser Melting

Maya

Sivaprasad

Kumar

et al. 2022

Metals

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A new class of martensitic stainless steel, namely 06Cr15Ni4CuMo, with applications in marine engineering, was processed by using selective laser melting (SLM). A body-centered cubic martensitic microstructure was observed, and the microstructure was compared with wrought 410 martensitic stainless steel. The SLM-processed sample showed a hardness of 465 ± 10 HV0.5, which was nearly 115 HV0.5 less than the wrought counterpart. Similarly, the SLM-processed sample showed improved YS and UTS, compared with the wrought sample. However, reduced ductility was observed in the SLM-processed sample due to the presence of high dislocation density in these samples. In addition, 71% volume high-angle grain boundaries were observed, corroborating the high strength of the material. The corrosion behavior was investigated in seawater, and the corrosion resistance was found to be 0.025 mmpy for the SLM-processed 06Cr15Ni4CuMo steel and 0.030 mmpy for wrought 410 alloys, showing better corrosion resistance in the SLM-processed material.

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Selective Laser Melting of Al-7Si-0.5 Mg-0.5Cu: Effect of Heat Treatment on Microstructure Evolution, Mechanical Properties and Wear Resistance

Cited by 13 publications

References 41 publications

Nanoprecipitates enhanced wear resistance of laser powder bed fusion-processed high-strength Al−Cu−Mg−Si−Ti alloy

Nanoprecipitates enhanced wear resistance of laser powder bed fusion-processed high-strength Al−Cu−Mg−Si−Ti alloy

Crystallographic Study of Grain Refinement in Ni Alloys with Ni-RE Intermetallics

Microstructure, Mechanical Properties, and Corrosion Behavior of 06Cr15Ni4CuMo Processed by Using Selective Laser Melting

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