Microstructural Characterization of Metastable Beta Titanium Alloys in Hot Rolled and Solution Treated condition

Deshpande, A.S.; Manda, Premkumar; Vanitha, C.; Singh, A. K.

doi:10.1016/j.matpr.2017.11.616

Cited by 2 publications

(1 citation statement)

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“…Metastable beta titanium alloys have been widely used in structural applications where high specific strengths, low elastic modulus, sufficient fatigue life, excellent corrosion resistance, deep hardenability and good cold formability and good biocompatibility are required [1][2][3] . These alloys contain enough quantities of β stabilizing elements in order to ensure a fully β phase body centred cubic microstructure is retained at room temperature after quenching from the singlephase field.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Microhardness Analysis of Metastable Beta Titanium Alloy Ti-15V-3Cr-3Al-3Sn Consolidated Using Equal-Channel Angular Pressing from Machining Chips

Shi

Tse

Higginson

2020

J. of Materi Eng and Perform

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Solid consolidation recycling of metastable beta titanium alloy Ti-15V-3Cr-3Al-3Sn from machining chips by using back pressure assisted equal channel angular pressing (BP-ECAP) under different processing conditions were carried out. Nearfully dense specimens could be achieved after multiple passes at 500 °C with the aid of back pressures. Microstructure analysis by SEM and TEM shows that ultrafine equiaxed α grains (~180 nm) formed in the β matrix homogeneously as a result of extensive dislocations, vacancies and sub-grain boundaries generated during ECAP.Random orientation relationship between α grains and β matrix was observed in most area. In addition, grain refinement, the increase in dislocation density and age hardening are suggested to response to the hardness enhancement in the consolidated Ti-15V-3Cr-3Al-3Sn samples. The microhardness homogeneity is improved with the processing temperature and the number of passes.

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Section: Introductionmentioning

confidence: 99%