Titanium Sheet Fabricated from Powder for Industrial Applications

Peter, William H.; Muth, Thomas R.; Chen, Wei; Yamamoto, Yukinori; Jolly, Brian; Stone, Nigel; Cantin, G. M. Delphine; Barnes, J.J.; Paliwal, Muktesh; Smith, R.A.; Capone, Joseph A.; Liby, Alan L; Williams, James C.; Blue, Craig A.

doi:10.1007/s11837-012-0309-1

Cited by 12 publications

(11 citation statements)

References 3 publications

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“…However, caution must be taken. In the work carried out by Peter et al on direct powder rolling (DPR), similar steel canisters were employed to insert multi-layers of pre-compacted sheets of titanium for subsequent thermomechanical processing [ 14 ]. They reported that this route heavily increased the oxygen content of the sheet product.…”

Section: Resultsmentioning

confidence: 99%

Effect of Direct Powder Forging Process on the Mechanical Properties and Microstructural of Ti-6Al-4V ELI

Careau¹,

Tougas²,

Ulate-Kolitsky

2021

Materials

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The study of powder metallurgy processing methods for titanium represents a promising avenue that can respond to a growing demand. This work reports the feasibility of direct powder forging (DPF) as a method to process large spherical Ti-6Al-4V powder into wrought products with noteworthy properties and physical characteristics. Direct powder forging is a thermomechanical process that imparts uniaxial loading to an enclosed and uncompacted powder to produce parts of various sizes and shapes. Stainless steel canisters were filled with prealloyed Ti-6Al-4V powder and consolidated through a multi-step open-die forging and rolling process into wrought DPF bars. After DPF, annealing was performed in the upper α+β phase. The results show that full consolidation was achieved and higher mechanical properties than the Ti-6Al-4V grade F-23 requirements in annealed conditions were obtained. The results also show that direct powder forging of spherical titanium powder could produce wrought mill products and exhibit some potential for further investigation for industrial applications.

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Section: Resultsmentioning

confidence: 99%

Effect of Direct Powder Forging Process on the Mechanical Properties and Microstructural of Ti-6Al-4V ELI

Careau¹,

Tougas²,

Ulate-Kolitsky

2021

Materials

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“…This is a 60% thickness reduction. A 50%-70% reduction was found to be commonly cited in the literature for various green strip thicknesses [5,6,[10][11][12][13][14]16]. It is assumed that a green strip thickness of 6.35 mm is the upper limit, given that this was rolled with diameters comparable in size to those of large plate mills used in industry [19].…”

Section: Figurementioning

confidence: 99%

Identifying Challenges to the Commercial Viability of Direct Powder Rolled Titanium: A Systematic Review and Market Analysis

Steytler

Knutsen

2020

Materials

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A systematic review of factors affecting the viability of direct powder rolling (DPR) as a process route for producing low-cost titanium metal strips was conducted by consolidating performance and process data from published research. Included is a market analysis that was performed by sourcing price points from powder and wrought product suppliers. As a result of the typical oxygen levels (>0.2 wt %) in low-cost powders, the performance of the DPR product is estimated at best to be comparable to ASTM grade 3 and 4 wrought products. Furthermore, evidence supporting chlorine levels >0.02 wt % in low-cost (non-melt) commercially available powders suggest poor weldability, which restricts the application of DPR titanium strips. A comparison of price points for powder and wrought products showed that the potential for commercial viability is likely to exist only for thin gauge strips of <1 mm thickness, as the cost advantage diminishes as the strip thickness increases. Based on the DPR product profile identified in this study (thin gauge, non-weldable, grade 3 or 4), the potential product applications are severely limited. The inability to reliably meet the properties of grade 2 metal strips excludes many uses of titanium metal strips. Consequently, it is emphasized that efforts need to be directed at improving the quality of low-cost powders and developing rolling practices to produce thicker gauge metal strips with desirable properties.

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“…Researchers all over the world have been striving to bring forward the solutions that enable the production of direct powder rolled products with good mechanical and physical properties while at the same time reducing processing costs. The DPR are used for the production of mill products, which may include plates, sheets, strips or foil [4], [5], [6], [7], [8]. Direct powder rolling (DPR) process is a multi-parametric process in which the control of each parameter is essential for the success of the process [9]- [15].…”

Section: Introductionmentioning

confidence: 99%

“…In an alternative DPR process, the Commonwealth Scientific and Industrial Research Organization (CSIRO) has developed a strip production process in which the green strip is produced by rolling powder through two opposite rotating rolls followed by hot rolling in a controlled atmosphere instead of sintering. The latter is regarded as a continuous process and aimed at reducing subsequent densification time in batch roll compaction and sintering processes [6], [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Investigating Optimum Parameters Required for Coiling Green Titanium Strips

Mothosi¹,

Chikosha²,

Madyira³

et al. 2018

Proceedings of the EAI International Conference for Research, Innovation and Development for Africa

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Titanium parts production using conventional processes is unarguably a costly process. Direct powder rolling process has shown its ability to produce titanium metal strips of various thicknesses and lengths. The present investigation aims to study the influence of process parameters such as roll gap, roll speed and roll set width and the green strip properties on the coil-ability of the strips. The study was conducted for roll gaps of 0.1 mm, 0.3 mm and 0.5 mm for varying roll speeds of 5 rpm, 10 rpm and 15 rpm. The roll set width was varied between 16 mm and 50 mm. Powders of Ti sponge 18 mesh (-1000 µm), TiHDH 100 mesh (-149 μm) and TiH2 CHI 100 mesh (-149µm) were roll compacted. Ti sponge green strips were coil-able after roll compaction at a roll gap of 0.3 mm, roll speed of 5 rpm and set widths of 16 mm and 50 mm. TiHDH green strips could not be coiled due to the brittle nature of the strips. TiH2 powder displayed poor rollability and could not be coiled. It was concluded that coil-ability is dependent on sufficient strength and ductility that the material has and strength and ductility depends on the rolling parameters used and the starting powder morphology and composition.

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Titanium Sheet Fabricated from Powder for Industrial Applications

Cited by 12 publications

References 3 publications

Effect of Direct Powder Forging Process on the Mechanical Properties and Microstructural of Ti-6Al-4V ELI

Effect of Direct Powder Forging Process on the Mechanical Properties and Microstructural of Ti-6Al-4V ELI

Identifying Challenges to the Commercial Viability of Direct Powder Rolled Titanium: A Systematic Review and Market Analysis

Investigating Optimum Parameters Required for Coiling Green Titanium Strips

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