Mechanical properties and corrosion behaviour of nanocrystalline Ti–5Ta–1.8Nb alloy produced by cryo-rolling

Bhaskar, Pragna; Dasgupta, Arup; Sarma, V. Subramanya; Mudali, U. Kamachi; Saroja, S.

doi:10.1016/j.msea.2014.08.016

Cited by 36 publications

(19 citation statements)

References 46 publications

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“…This difference in hardness (indicated by arrow in Fig. 3) occurs due to the refinement in grain size in CR samples which in turn is due to suppression of dynamic recovery during cryo-rolling [17]. Since the hardness of RTR 90 (268 VHN) is comparable with CR65 (272 VHN), it is expected that the dislocation density and grain sizes of these samples are also similar.…”

Section: Resultsmentioning

confidence: 97%

“…They have also observed an increase in the strength of this alloy without deterioration in its outstanding corrosion resistance [17].…”

Section: Introductionmentioning

confidence: 79%

“…4b). Figure 4c shows nanocrytalline (NC) grains at rolling strain of 2.3 [17]. Figure 5a shows the bright field TEM micrograph of RTR 50 sample.…”

Section: Resultsmentioning

confidence: 99%

“…In general, texturing in this material is weak. This is possibly because of the onset of grain fragmentation [17]. Figure 9a shows the grain orientation map of CR 90 superimposed on image quality map which has been obtained by carrying out the PED.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 9a shows the grain orientation map of CR 90 superimposed on image quality map which has been obtained by carrying out the PED. PED has been used for this sample since the grain refinement taken place and the grain size is calculated to be *20 nm using X-ray diffraction based techniques [17]. PED involves measurement of local orientation of the specimen to investigate crystal texture, rotation and strain at the nanometre scale.…”

Section: Resultsmentioning

confidence: 99%

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Comparison of Microtexture Evolution During Cryo and Room Temperature Rolling of Ti–5Ta–2Nb Alloy

Bhaskar

Dasgupta

Murugesan

et al. 2016

Trans Indian Inst Met

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An a ? b Ti-5Ta-2Nb alloy has been developed for applications under severe oxidizing conditions of boiling concentrated nitric acid in spent fuel reprocessing plant. The formation of nanocrystalline grains has been observed in the cryo-rolled sample accompanied by a significant improvement in yield strength whereas the grain refinement is not significant in case of room temperature rolled sample. Suppression of dynamic recovery plays a major role in the formation of nanostructured material. The evolution of micro-texture during room temperature rolling and cryo-rolling has been compared in this study. The rolling texture of room temperature and cryo-rolled samples are similar to the rolling texture predicted for hexagonal materials with c/a\1.6. XRD analysis indicates peaks shift to lower 2h with increase in rolling strains indicating the presence of tensile residual strains. Peak broadening is also observed indicating an increase in defect density and decrease in grain size.

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Section: Resultsmentioning

confidence: 97%

“…They have also observed an increase in the strength of this alloy without deterioration in its outstanding corrosion resistance [17].…”

Section: Introductionmentioning

confidence: 79%

“…4b). Figure 4c shows nanocrytalline (NC) grains at rolling strain of 2.3 [17]. Figure 5a shows the bright field TEM micrograph of RTR 50 sample.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning