Evolution of microstructure and mechanical properties of selective laser melted Ti-5Al-5V-5Mo-3Cr after heat treatments

Carlton, Holly D.; K, Klein; Elmer, J. W.

doi:10.1080/13621718.2019.1594589

Cited by 58 publications

(18 citation statements)

References 33 publications

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“…Deng et al [15] proposed three typical heat treatment strategies to realize bimodal and bi-lamellar structures in metastable SLM-prepared Ti55531 alloys. Carlton et al [22] clarified the effect of different heat treatment temperatures on the morphology and size of α phase as well as the corresponding mechanical performance of Ti5553 alloys. The above studies indicate that the non-equilibrium phases in SLM-fabricated titanium alloys can be transformed by post-process heat treatment, which improve the mechanical properties in turn.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe

Bai

Deng

Chen

et al. 2021

Metals

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Additive manufacturing (AM) has shown the ability in processing titanium alloys. However, due to the unique thermal history in AM, the microstructure of AM-fabricated parts is metastable and non-equilibrium. This work was aiming to tailor the microstructure and to improve the mechanical properties of α+β Ti-6Al-4V alloy and metastable β Ti-5Al-5Mo-5V-1Cr-1Fe alloys by manipulating the post-process heat treatment. The results showed that Ti-6Al-4V exhibited a metastable α’ martensite microstructure in the as-fabricated condition, while a metastable β structure was formed in as-printed Ti-5Al-5Mo-5V-1Cr-1Fe. After post-process heat treatment, both lamellar and bimodal microstructures were obtained in Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe alloys. Especially, the Ti-6Al-4V alloy subjected to 950 °C annealing showed the lamellar structure with the highest fracture toughness of 90.8 ± 2.1 MPa.m1/2. The one cyclically heat-treated has excellent combined strength, ductility and fracture toughness attributed to the bimodal structure. In addition, similar observations of lamellar and bimodal microstructure appeared in the post-process heat-treated Ti-5Al-5Mo-5V-1Cr-1Fe alloy. This study demonstrated that heat treatment is an effective way to tackle the non-equilibrium microstructure and improve the mechanical properties of selective laser melting (SLM)-fabricated titanium alloys.

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Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe

Bai

Deng

Chen

et al. 2021

Metals

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“…It won't be dangerous to the structure. The effect of heat treatment on mechanical properties of additively manufactured lattice structures has been studied in the following articles 52,53 …”

Section: Discussionmentioning

confidence: 99%

Structural analysis of an endoprosthesis designed with graded density lattice structures

Sufiiarov

Borisov

Sokolova

et al. 2020

Numer Methods Biomed Eng

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The most common causes of conducting a hip revision surgery after total hip replacement are aseptic loosening (aseptic instability) of the endoprosthesis, bone destruction as a result of contact with the endoprosthesis, and a periprosthetic fracture. These are the effects of load transfer to the bone tissue in arthroplasty resulting due to the difference in stiffness of the endoprosthesis and the bone. Titanium alloy is widely used in endoprostheses manufacturing because of its high biocompatibility, good wear properties, and corrosion resistance, but such endoprostheses are stiffer than the femur. These problems have raised interest in searching for the best materials and topology for a femoral implant. Nowadays additive technology is of great interest as it enables to create materials with graded density. These materials consist of multiple lattice structures with variable parameters and topology. By varying the parameters of lattice structures one can adjust the mechanical properties of the material as required. These materials find their application in hip endoprostheses manufacturing, allowing to adjust the parameters of the lattice structures, and deliver a product with femur‐like mechanical properties. The porous structure also ensures bone tissue ingrowth into the prosthesis. The authors designed and simulated an endoprosthesis made of graded density lattice structures with femur‐like mechanical properties. Using a numerical simulation software Ansys Mechanical authors determined the effect of the topology on the structural behavior of the femur and defined the endoprosthesis‐femur combined performance under various load cases.

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“…This microstructure allows the possibility for post-build heat treating to enhance or modify the properties of Ti5553 upon LPBF processed. It can be possible, differently than other Ti-alloys, to produce a range of microstructures with (Ref 90,96). This alloy composition can strengthen via both solid solution mechanisms in the single phase and precipitation strengthening of a-phase at temperatures below the T b around 850°C (Ref 97).…”

Section: Ti5553 [Ti-5al-5v-5mo-3cr])mentioning

confidence: 99%

Beta Titanium Alloys Processed By Laser Powder Bed Fusion: A Review

Colombo-Pulgarín

Biffi

Vedani

et al. 2021

J. of Materi Eng and Perform

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In βTi-alloys, some advances and developments have been reached toward optimizing their mechanical performance and their processability. However, the applications of these alloys via laser powder bed fusion (LPBF) are still under investigation. In this work, the processing of βTi-alloys via LPBF and their properties is reviewed with a focus on six selected metallurgical systems which are expected to be top performance materials in applications in the aeronautical and biomedical contexts. These six systems promise a better mechanical and functional performance considering different in-service environments for medical implants and structural applications. After literature analysis, the applicability of βTi-alloys to be processed via LPBF is then discussed considering the relevant fields of applications.

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Evolution of microstructure and mechanical properties of selective laser melted Ti-5Al-5V-5Mo-3Cr after heat treatments

Cited by 58 publications

References 33 publications

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe

Structural analysis of an endoprosthesis designed with graded density lattice structures

Beta Titanium Alloys Processed By Laser Powder Bed Fusion: A Review

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