Phase Transformations upon Ageing in Ti15Mo Alloy Subjected to Two Different Deformation Methods

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10431946" target="_blank" >RIV/00216208:11320/21:10431946 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21220/21:00356233

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5eq7x~XXFO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5eq7x~XXFO</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met11081230" target="_blank" >10.3390/met11081230</a>

Result language

angličtina

Original language name

Phase Transformations upon Ageing in Ti15Mo Alloy Subjected to Two Different Deformation Methods

Original language description

Ti15Mo alloy was subjected to two techniques of intensive plastic deformation, namely high pressure torsion and rotary swaging at room temperature. The imposed strain resulted in the formation of an ultrafine-grained structure in both deformed conditions. Detailed inspection of the microstructure revealed the presence of grains with a size of around 100 nm in both conditions. The microstructure after rotary swaging also contained elongated grains with a length up to 1 mu m. Isothermal ageing at 400 degrees C and 500 degrees C up to 16 h was applied to both conditions to investigate the kinetics of precipitation of the alpha phase and the recovery of lattice defects. Positron annihilation spectroscopy indicated that the recovery of lattice defects in the beta matrix had already occurred at 400 degrees C and, in terms of positron trapping, was partly compensated by the precipitation of incoherent alpha particles. At 500 degrees C the recovery was fully offset by the formation of incoherent alpha/beta interfaces. Contrary to common coarse-grained material, in which the alpha phase precipitates in the form of lamellae, precipitation of small and equiaxed alpha particles occurred in the deformed condition. A refined two-phase equiaxed microstructure with alpha particles and beta grain sizes below 1 mu m is achievable by simple rotary swaging followed by ageing.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metals [online]

ISSN

2075-4701

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

1230

UT code for WoS article

000689397000001

EID of the result in the Scopus database

2-s2.0-85111450628