The Effects of Post Heat Treatment on the Microstructural and Mechanical Properties of an Additive-Manufactured Porous Titanium Alloy

Yu, Guisheng; Li, Zhibin; Hua, Youlu; Liu, Hui; Xi-nan, Zhao; Li, Wei; Wang, Xiaojian

doi:10.3390/ma13030593

Cited by 16 publications

(10 citation statements)

References 25 publications

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“…One step worth mentioning is the post-AM heat and surface treatments. By this, AM porous metal materials can obtain improved microstructure and mechanical properties [ 67 , 68 ]. Hot isostatic pressing, combining high temperature with high pressure level, can be applied to close the cavernous defects generated by the AM process [ 67 , 69 ].…”

Section: Workflow Of Am Technologymentioning

confidence: 99%

Main Applications and Recent Research Progresses of Additive Manufacturing in Dentistry

Huang

et al. 2022

BioMed Research International

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In recent ten years, with the fast development of digital and engineering manufacturing technology, additive manufacturing has already been more and more widely used in the field of dentistry, from the first personalized surgical guides to the latest personalized restoration crowns and root implants. In particular, the bioprinting of teeth and tissue is of great potential to realize organ regeneration and finally improve the life quality. In this review paper, we firstly presented the workflow of additive manufacturing technology. Then, we summarized the main applications and recent research progresses of additive manufacturing in dentistry. Lastly, we sketched out some challenges and future directions of additive manufacturing technology in dentistry.

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Section: Workflow Of Am Technologymentioning

confidence: 99%

Main Applications and Recent Research Progresses of Additive Manufacturing in Dentistry

Huang

et al. 2022

BioMed Research International

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“…4. The most common treatment reported in literature for EBM Ti6Al4V is heating at 950°C for two hours and then air cooled (Heat treatment 1 in Table 3) [21,33], which was selected in the rst place. However, it did not produce the ne lamellar structure like the as-fabricated EBM part.…”

Section: Microstructure and Micro-hardnessmentioning

confidence: 99%

On the influence of heat treatment in suppressing the layer orientation effect in finishing of electron beam melted Ti6Al4V

Dabwan

Anwar

Al-Samhan

et al. 2021

Int J Adv Manuf Technol

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Electron beam melting (EBM) is gaining more interest due to its near-net-shape production and ability to process di cult to manufacture materials, such as titanium alloys. However, due to the poor surface quality of the EBM parts, nishing operations, such as machining, are required. The main issue in the nishing of the EBM parts is their directional properties that lead to different surface roughness values for different part orientations for the same employed machining parameters. In this study, EBM Ti6Al4V parts were subjected to heat treatment to suppress the effect of the part/layers' orientations effect during the nish milling process. Three different heat treatments were employed to the as-fabricated EBM Ti6Al4V parts. The ne lamellar microstructure was set as a target from the heat treatment due to its overall superior mechanical properties and also, to keep a fair comparison in the machining of the asfabricated and heat-treated EBM Ti6Al4V parts. The results of the heat treatments showed that the EBM Ti6Al4V parts heated at 600°C for 3 hours and then air-cooled exhibited the same ne lamellar microstructure and microhardness as that of the as-fabricated EBM parts. The other two heat treatments including heating at 950°C and 800°C for 2 hours followed by air cooling were not able to maintain the ne lamellar structure due to the increase in the width of the alpha grains. The as-fabricated and heattreated EBM Ti6Al4V parts were subjected to the milling operation by considering the three possible parts/layers orientation with respect to the tool feed directions. The milling results showed that the asfabricated parts showed up to a 27% difference in surface roughness for different part orientations. In contrast, the heat-treated parts showed uniform surface roughness for the three part orientations with a variation of 8%. Similarly, considerable differences were observed in the surface integrity and the machined surface microhardness (18%) of the as-fabricated EBM parts as compared to the heat-treated parts) 2%). The heat-treated parts showed more uniform and superior surface morphology across all the part orientations. This is because of the more uniform microstructure, less porosity, higher consolidation of the EBM layers, and elimination of the columnar grains in the case of the heat-treated parts as compared to the EBM parts. This study revealed that in the case of the heat-treated EBM part the effect of part orientation with respect to milling tool feed direction was almost removed.

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“…[ 87 ] Yu et al indicated that the significance of heat‐treatment temperature on the mechanical properties is more pronounced in lattice structures with low porosity. [ 88 ] Fiocchi et al showed that the damping capacity of Ti 6 Al 4 V lattice structures is two orders of magnitude larger than the one exhibited by the bulk samples of the same base material even after heat treatments; knowing that heat‐treated samples with stable α + β phase mixtures have low damping capacity. [ 89 ] Suzuki et al and Liu et al investigated the effect of the heat treatment process on the microstructures of AlSi10Mg lattice structures using two different heat treatment temperatures, 1) 300 °C for 2 h and 2) 530 °C for 6 h, followed by water quenching to room temperature.…”

Section: Post‐heat Treatments Of Slm Structuresmentioning

confidence: 99%

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

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The Effects of Post Heat Treatment on the Microstructural and Mechanical Properties of an Additive-Manufactured Porous Titanium Alloy

Cited by 16 publications

References 25 publications

Main Applications and Recent Research Progresses of Additive Manufacturing in Dentistry

Main Applications and Recent Research Progresses of Additive Manufacturing in Dentistry

On the influence of heat treatment in suppressing the layer orientation effect in finishing of electron beam melted Ti6Al4V

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

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