Titanium sheet fabrication from powder

Cantin, G. M. Delphine; Gibson, Mark

doi:10.1016/b978-0-12-800054-0.00021-6

Cited by 8 publications

(13 citation statements)

References 62 publications

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“…It has been reported that typical irregularly shaped HDH CP-Ti powder can be formed into CP-Ti sheet with mechanical properties approaching those available via WP and with similar purity (0.12 wt-% O, 0.013 wt-% N, and 10 ppm H) [245]. This particular study reported a UTS of 517-520 MPa and ductility of 20-27%EL, depending on the testing direction.…”

Section: Powder Rollingmentioning

confidence: 63%

“…Another process has been under recent development by CSIRO in Australia for the production of thin gauge Ti alloy sheets from PA or BE powders [242][243][244][245]. The CSIRO process utilises several steps to produce fully dense Ti alloy sheets.…”

Section: Powder Rollingmentioning

confidence: 99%

“…Typically, a maximum pressure between 300 and 415 MPa can be achieved with a Figure 25. Schematic diagram of CSIRO process for producing CP-Ti strip from metal powder [245]. (Reproduced with permission.)…”

Section: Gaseous Isostatic Forgingmentioning

confidence: 99%

“…The CSIRO process utilises several steps to produce fully dense Ti alloy sheets. These steps include direct powder rolling, heating under inert gas for hot rolling, mill annealing, final cold rolling, and annealing ( Figure 25) [245]. After annealing, the strips are generally treated to remove a thin layer (0.05 mm) from each surface.…”

Section: Powder Rollingmentioning

confidence: 99%

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Powder metallurgy of titanium – past, present, and future

Fang

Paramore

Sun

et al. 2017

International Materials Reviews

411

158

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Powder metallurgy (PM) of titanium is a potentially cost-effective alternative to conventional wrought titanium. This article examines both traditional and emerging technologies, including the production of powder, and the sintering, microstructure, and mechanical properties of PM Ti. The production methods of powder are classified into two categories: (1) powder that is produced as the product of extractive metallurgy processes, and (2) powder that is made from Ti sponge, ingot, mill products, or scrap. A new hydrogen-assisted magnesium reduction (HAMR) process is also discussed. The mechanical properties of Ti-6Al-4V produced using various PM processes are analyzed based on their dependence on unique microstructural features, oxygen content, porosity, and grain size. In particular, the fatigue properties of PM Ti-6Al-4V are examined as functions of microstructure. A hydrogen-enabled approach for microstructural engineering that can be used to produce PM Ti with wroughtlike microstructure and properties is also presented.

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Section: Powder Rollingmentioning

confidence: 63%

Section: Powder Rollingmentioning

confidence: 99%

Section: Gaseous Isostatic Forgingmentioning

confidence: 99%

Section: Powder Rollingmentioning

confidence: 99%

See 2 more Smart Citations

Powder metallurgy of titanium – past, present, and future

Fang

Paramore

Sun

et al. 2017

International Materials Reviews

411

158

View full text Add to dashboard Cite

show abstract

“…The comparison of these two routes in Figure 9 shows that the best performing DPR sample, with an elongation of 26% (ORNL [43]), outperforms the best performing TiH 2 CIP sample (ADMA Inc [44]), with 23%. There is a DPR sample with 27% elongation (CSIRO [45]), but this value is only for the rolling direction, and elongation perpendicular to rolling is only 20%. Both the DPR and TiH 2 CIP route (purple) meet the minimum ASTM specification for grade 2 although, overall, the performance of DPR is better.…”

Section: Mechanical Properties Of Direct Powder Rolled Titanium Metal Stripmentioning

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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