Microstructural evolution and mechanical properties of Ti–5Al–5Mo–5V–3Cr alloy by heat treatment with continuous temperature gradient

Effect of Aging Treatment on Microstructural Evolution and Mechanical Properties of the Electron Beam Cold Hearth Melting Ti-6Al-4V Alloy

“…The morphology of the transformed β-phase was obviously changed with increase in aging time; the secondary α-phase precipitated on the β matrix appeared to be merged and matured, and the content of the transformed β-phase gradually decreased. This phenomenon was also observed in other titanium alloys [ 24 , 25 ].…”

“…The results showed that the β grain size can be restrained by a primary α-phase during aging treatment, and the morphology of the secondary α is sensitive to time. Xu et al [ 24 ] studied the microstructural evolution and mechanical properties of a titanium alloy during solution-plus-aging treatment. The results showed that an α+β solution-plus-aging treatment resulted in an excellent combination of strength and plasticity.…”

The ageing response of direct laser deposited metastable β-Ti alloy, Ti–5Al–5Mo–5V–3Cr

“…Khodabakhshi et al [21] reported that the ultimate tensile strength of the metals and alloys is approximately three times the microhardness values; this relationship also holds true for the current work (Table 6). It is also important to note here that the obtained microhardness and tensile test results for the current work were found to be comparable (Table 6) with the available microhardness and tensile test results in the literature for SLM-built [14] and wrought [1,22] Ti-5553 β-Ti alloy. This boosts confidence in exploring the DLD process in a production application.…”

“…The data presented illustrate the microhardness and tensile test results for the samples aged via single ageing with faster heating rate, single ageing with slower heating rate, duplex ageing, and single ageing with faster heating rate after solution treatment. The table also shows a comparison of the microhardness and tensile test results from the current work with the available microhardness and tensile test results in the literature for additively manufactured[14] and wrought[1,22] Ti-5553 β-Ti alloy.…”

Evolution of microstructure and mechanical properties of selective laser melted Ti-5Al-5V-5Mo-3Cr after heat treatments

“…While the residual stress is lower than in Ti64, there is still some residual stress in the material which is later relieved via a heat treatment on the post build samples for 1 h at 300°C. In addition, Ti5553 has the ability to strengthen via both solid-solution mechanisms in the single phase, and precipitation strengthening of α-phase (HCP) at temperatures below the β-transus (BCC) of approximately 840°C [3, 14, 15]. This creates an opportunity for post AM heat treating of Ti5553 to strengthen it to Ti64 values or possibly higher [3] thus making it an attractive alternative to Ti64 as an AM alloy.…”