Influence of process parameter and strain rate on the dynamic compressive properties of selective laser-melted Ti-6Al-4V alloy

Pang, Zhicong; Liu, Yang; Li, Ming; Zhu, Chunli; Li, Shuxin; Wang, Yonggang; Wang, Di; Song, Changhui

doi:10.1007/s00339-018-2359-x

Cited by 26 publications

(5 citation statements)

References 41 publications

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“…Predominantly ductile fracture was usually observed in wrought Ti-6Al-4V [84] and [85], and in the hot isostatic pressed one [74], and a brittle failure mechanism was identified only locally [86]. A similar mixed type of fracture surface was observed by Pang et al for SLM alloy Ti-6Al-4V [87]. In summary, one can conclude that the alloy ductility and the nature of fracture significantly depend on the microstructure.…”

Section: Resultssupporting

confidence: 59%

Microstructure and mechanical properties of Titanium grade 23 produced by selective laser melting

Nikiel

Wróbel

Szczepanik

et al. 2021

Archiv.Civ.Mech.Eng

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Selective laser melted Titanium grade 23 was characterized by low porosity, relatively large surface roughness and pronounced surface texture (i.e. surface grooves orientation). The band/layer microstructure was built of mixed α and β phases. The as printed structure exhibited very high compressive residual stresses with strong anisotropy (i.e., − 512 ± 17 MPa and − 282 ± 14 MPa along the laser scanning direction and along the transverse direction, respectively) and strong fiber crystallographic texture. The latter one is responsible for the anisotropy of hardness in the material. Annealing at 600 °C during four hours significantly removed residual stresses (i.e. to − 14 ± 2.8 MPa) and slightly weakened the texture. Yield strength, 1120 ± 50 MPa, and ultimate tensile strength, 1210 ± 50 MPa, of the annealed material are significantly higher and tensile elongation, 3.9%, lower than for commercial Titanium grade 23. Final mechanical polishing to obtain flat and relatively smooth surface induced desired compression residual stress in the subsurface (i.e., equal to about − 90 MPa). Low absorbed gas contents (oxygen, nitrogen, hydrogen) and low porosity of the printed material indicates the correctness of the technology and allows the printed material to be classified as meeting the requirements of ASTM standards for Titanium grade 23. Besides traditional testing techniques, the optical profilometry, X-ray analysis (texture and residual stresses measurement) and infrared absorption method were applied for the product characterization and some potential of these testing methods and usefulness in technological practice was discussed, what can be particularly interesting both to practitioners from industry and researches from scientific laboratories.

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Section: Resultssupporting

confidence: 59%

Microstructure and mechanical properties of Titanium grade 23 produced by selective laser melting

Nikiel

Wróbel

Szczepanik

et al. 2021

Archiv.Civ.Mech.Eng

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“…, here [0,ε] represents the strain in a certain range [42]. As mentioned, although the TC4 alloy still had high stress even though stress collapse happened, it is an unstable state and no longer suitable for engineering application.…”

Section: Energy Absorption Of the Slmed Tc4 Alloymentioning

confidence: 99%

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Liu

Zhu

et al. 2021

Materials Science and Engineering: A

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“…Compressive strength tests of Ti6Al4V alloys and CoCrMo alloys have been carried out by many research centers [ 25 , 29 , 30 , 31 , 32 ]. Weißmann et al [ 25 ] determined the compressive strength of scaffolds made of Ti6Al4V alloy from SLM.…”

Section: Overview and Discussionmentioning

confidence: 99%

“…Ramaswamy et al [ 31 ] conducted tests of the compressive strength of Ti6Al4V alloy reinforced with yttrium oxide. Pang et al [ 32 ] investigated the dynamic mechanical responses to compression of a selectively laser melted Ti6Al4V alloy. Dobrzański [ 29 ] conducted research on the influence of the technology of manufacturing microporous skeletons selectively laser sintered from titanium on the compressive strength.…”

Section: Overview and Discussionmentioning

confidence: 99%

Strength Tests of Alloys for Fixed Structures in Dental Prosthetics

Bojko

Ryniewicz

2022

Materials

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The production of fixed prosthetic restorations requires strength identification in terms of cognition and the targeted clinical applications. The aim of the study is to evaluate the static strength in axial tensile and compression tests of titanium and cobalt alloys for the supporting foundations of crowns and bridges produced using Computer Aided Design and Manufacturing (CAD/CAM) technologies: Direct Metal Laser Sintering (DMLS) and milling. The test materials are samples of Ti6Al4V and CoCrMo alloys obtained using digital technologies and, for comparison purposes, CoCrMo samples from traditional casting. For the studied biomedical alloys, R0.05, Rp0.2, Rm and Ru were determined in the tensile tests, and in the compression tests R0.01, Rp0.2 and the stress σ at the adopted deformation threshold. Tensile and compression tests of titanium and cobalt alloys indicate differences in strength parameters resulting from the technology applied. The manufacturing of the structures by DMLS provides the highest stress values that condition elastic deformations for cobalt biomaterials: R0.05 = 1180 MPa, R0.01 = 1124 MPa and for titanium biomaterials: R0.05 = 984 MPa, R0.01 = 958 MPa. The high resistance to deformation of CoCrMo and Ti6Al4V from DMLS may be beneficial for fixed prosthetic structures subjected to biomechanical stresses in the stomatognathic system and the impact of these structures on the dento-alveolar complex.

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Influence of process parameter and strain rate on the dynamic compressive properties of selective laser-melted Ti-6Al-4V alloy

Cited by 26 publications

References 41 publications

Microstructure and mechanical properties of Titanium grade 23 produced by selective laser melting

Microstructure and mechanical properties of Titanium grade 23 produced by selective laser melting

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Strength Tests of Alloys for Fixed Structures in Dental Prosthetics

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