Mechanical properties of powder titanium at different production stages. V. Properties of a titanium strip produced by powder rolling

Gogaev, K. A.; Nazarenko, V. A.; Voropaev, V. A.; Podrezov, Yu. N.; Verbilo, D. G.; Koryak, O. S.; Okun, I. Yu.

doi:10.1007/s11106-010-9182-z

Cited by 12 publications

(4 citation statements)

References 6 publications

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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%

“…Many of the DPR samples do not meet the grade 2 oxygen limit, but they do meet the grade 2 elongation requirement, which is possibly due to the high relative densities, as observed in Figure 11. The DPR route, by necessity, involves additional processing, and hence the final product has a relative density of over 99% [4,6,9,10,13,14]. The titanium hydride-derived compacts meet both the grade 2 oxygen and elongation specification, which is possibly due to a combination of low oxygen content (<0.25 wt %) and high final density (greater than 98%).…”

Section: Mechanical Properties Of Direct Powder Rolled Titanium Metal Stripmentioning

confidence: 99%

“…Figure 2. Green density and thickness for titanium and Ti-6Al-4V strips produced using various roll diameters[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Color and symbol combinations indicate different studies.…”

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confidence: 99%

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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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Section: Figurementioning

confidence: 99%

Section: Mechanical Properties Of Direct Powder Rolled Titanium Metal Stripmentioning

confidence: 99%

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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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“…The pure Ti is in sponge powder form and it is processed further using ingot production processes and purity tests (C. Doblin, 2013). The powder is converted into an ingot of usable quality by compression, welding, and multi iteration melting in a vacuum-equipped furnace (G. M. D. Cantin et al, 2011-K. A. Gogaev et al, 2009. Other usable forms such as Ti -sheets are made from rods which are heated to approximately two-thirds of the *Corresponding author's ORCID ID: 0000-0001-7612-6572 Email: DOI: https://doi.org/10.14741/ijcet/v.8.3.15 melting point of Ti then mechanically pressed for several hours, followed by cutting and polishing giving Ti-product ready for application (W. J. Kim et al, 2011;X.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Compaction and Sintering of Commercially Pure Titanium using Friction Stir Processing

Fortier¹,

Kumar²,

Komarasamy³

et al. 2018

IJCET

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Manufacturing of a component through powder metallurgy (PM) route involves at least three critical steps: powder blending, compaction, and sintering. Overall, the PM route takes 4 to 8 steps to get to the final product. Moreover, it requires a huge amount of capital investment to perform every step of the manufacturing process via PM route. Friction stir processing (FSP) is a derivative of friction stir welding which has emerged as a generic microstructural modification tool in last one decade. The aim of the current work was to explore the possibility of decreasing the number of steps required in the manufacturing of a product using the PM technique. Using the FSP method, the manufacturing process is reduced to two steps and the mechanical properties of the final product are significantly improved. In this study, commercially pure titanium (Ti) powder was used. The two-step process appeared extremely efficient and it involved: 1) constraining the Ti-powder in a die and using a punch to consolidate it in a final disk-like geometry, 2) next, the consolidated disk-shaped product was processed using FSP tool and methods. Initial mechanical characterization results show peak hardness of the FSP processed Ti-powder product to be approximately 436 HV0.3 with average hardness measured at about 251 HV. The electron backscattered diffraction of the FSP-assisted sintered region showed equiaxed grains with average grain size to be 440 ±254 nm. The initial result indicates FSP can be used as a manufacturing tool for consolidating powders in to bulk solid form.

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Production of Titanium Powder Sheets by Asymmetric Rolling

Gogaev

Voropaev

Kalutskii

et al. 2013

Powder Metall Met Ceram

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Mechanical properties of powder titanium at different production stages. V. Properties of a titanium strip produced by powder rolling

Cited by 12 publications

References 6 publications

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

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

Feasibility Study of Compaction and Sintering of Commercially Pure Titanium using Friction Stir Processing

Production of Titanium Powder Sheets by Asymmetric Rolling

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