Quantification of microstructural features in α/β titanium alloys

Tiley, J.; Searles, T; Lee, Eunha; Kar, Sujoy Kumar; Banerjee, Rajarshi; Russ, John C.; Fraser, Hamish L.

doi:10.1016/j.msea.2003.12.008

Cited by 182 publications

(84 citation statements)

References 3 publications

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“…The high strength of the EBM material is likely due to it's refined lamellar microstructure with colony sizes on the order of 10 μm compared to 20 to 500 μm [3,4,6] for conventionally manufactured lamellar microstructures. The difference in strength between lots 1 and 2 can only be explained by the difference in texture.…”

Section: Resultsmentioning

confidence: 99%

Materials Characterization of Electron Beam Melted Ti‐6Al‐4V

Draper

Lerch

Rogers

et al. 2016

Proceedings of the 13th World Conference on Titanium

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An in-depth material characterization of Electron Beam Melted (EBM) Ti-6Al-4V material has been completed. Hot Isostatic Pressing (HIP) was utilized to close porosity from fabrication and also served as a material heat treatment to obtain the desired microstructure. The changes in the microstructure and chemistry from the powder to pre-HIP and post-HIP material have been analyzed. Computed tomography (CT) scans indicated porosity closure during HIP and high-density inclusions scattered throughout the specimens. The results of tensile and high cycle fatigue (HCF) testing are compared to conventional Ti-6Al-4V. The EBM Ti-6Al-4V had similar or superior mechanical properties compared to conventionally manufactured Ti-6Al-4V.

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Section: Resultsmentioning

confidence: 99%

Materials Characterization of Electron Beam Melted Ti‐6Al‐4V

Draper

Lerch

Rogers

et al. 2016

Proceedings of the 13th World Conference on Titanium

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“…All these measured parameters are labelled as * in Tables 1-3. α grain size was measured by linear intercept method [34], and α lamellar width was measured by the way described in [35]. Fatigue strength data were obtained from the stress-life (S-N) curves in the literature.…”

Section: Methodsmentioning

confidence: 99%

Effect of microstructure on the fatigue properties of Ti–6Al–4V titanium alloys

Shi

Sha

et al. 2013

Materials & Design (1980-2015)

178

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Publisher rights This is the author's version of a work that was accepted for publication in Materials & Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials & Design, Vol. 46, 04/2013 General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The thickness of a lamellae in the samples produced with the profiled roller was measured using five scanning electron microscope (SEM) images according to the method explained in Tiley et al [13] Each image corresponded to a specific location within a generic band, as described in Martina et al [2] Prior to the SEM investigation, the samples were re-polished for eight minutes at 100 kg/m 2 and 80 rpm. SEM images were taken using a backscatter detector, a voltage of 20 keV, and a spot size of four (Figure 2(a)).…”

Section: A Evaluation Of Strain and Microstructurementioning

confidence: 99%

“…This was repeated for four directions (0, 45, 90, and 135 deg orientations) giving 20 measurements per location (Figure 2(d)), in accordance with ASTM E1382, [15] to take into account the strong anisotropy of the microstructure. The length of the intercepts across each line was determined using the ImageJ software [16] and its plugin Measure Roi PA. [17] Finally, the a lamellae thickness was determined as 1 = 1:5ð1=kÞ mean [13] where k mean is the mean intercept length.…”

Section: A Evaluation Of Strain and Microstructurementioning

confidence: 99%

Microstructure of Interpass Rolled Wire + Arc Additive Manufacturing Ti-6Al-4V Components

Martina

Colegrove

Williams

et al. 2015

Metall Mater Trans A

246

172

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Mechanical property anisotropy is one of the issues that are limiting the industrial adoption of additive manufacturing (AM) Ti-6Al-4V components. To improve the deposits' microstructure, the effect of high-pressure interpass rolling was evaluated, and a flat and a profiled roller were compared. The microstructure was changed from large columnar prior b grains that traversed the component to equiaxed grains that were between 56 and 139 lm in size. The repetitive variation in Widmansta¨tten a lamellae size was retained; however, with rolling, the overall size was reduced. A ''fundamental study'' was used to gain insight into the microstructural changes that occurred due to the combination of deformation and deposition. High-pressure interpass rolling can overcome many of the shortcomings of AM, potentially aiding industrial implementation of the process.

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Quantification of microstructural features in α/β titanium alloys

Cited by 182 publications

References 3 publications

Materials Characterization of Electron Beam Melted Ti‐6Al‐4V

Materials Characterization of Electron Beam Melted Ti‐6Al‐4V

Effect of microstructure on the fatigue properties of Ti–6Al–4V titanium alloys

Microstructure of Interpass Rolled Wire + Arc Additive Manufacturing Ti-6Al-4V Components

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