English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The paper presents the results of studying the deformation of samples of the alloy Grade 5 while they are heated to temperatures ranging between 900 and 1350 K with constant tensile stresses of 4.45, 6.91 and 9.36 MPa, which is significantly below the yield stress of the alloy at the test temperatures (σT ≥ 34 MPa). Under these conditions, the deformation occurs due to the mechanism of short-term creep. During testing, the samples are heated in air and argon environments. The results are compared with the results obtained earlier in similar studies for Grade 2 commercially pure titanium and Ti-5AL. The investigation has revealed a qualitative similarity of the effect of environment on the processes of creep deformation in Grade 2 commercially pure titanium, Ti-5AL alloy, and Grade 5 alloy. Herewith, all the alloys under study have close values of activation energy (from 250 to 320 kJ/mol). The experiments have shown that, as compared to previously studied alloys, Grade 5 alloy has higher temperatures of the onset of creep deformation and lower creep rates. Processing of the results has allowed us to evaluate the empirical coefficients for Grade 5 alloy in two dependences obtained earlier for the Ti-5AL and Grade 2 alloys. One dependence relates the creep rate to the heating temperature, tensile stress, and creep activation energy; the other one relates the creep deformation onset temperature (residual creep deformation within 1 hour of holding is 0.2%) to the conventional short-term creep limit.

Short-term high-temperature creep of Grade 5 titanium alloy heated in air and argon