Microstructure and mechanical properties evolution of Ti-13Nb-13Zr alloy processed by ECAP-Conform and rotary swaging

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F23%3AN0000053" target="_blank" >RIV/26316919:_____/23:N0000053 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S092583882303654X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S092583882303654X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2023.172351" target="_blank" >10.1016/j.jallcom.2023.172351</a>

Result language

angličtina

Original language name

Microstructure and mechanical properties evolution of Ti-13Nb-13Zr alloy processed by ECAP-Conform and rotary swaging

Original language description

The evolution of the microstructure and properties of Ti-13 Nb-13Zr alloy was investigated for the materials states ranging from the solution treated (ST) state over the continuous equal channel angular pressing (ECAPConform) state to the states of the materials processed by combination of ECAP-Conform with rotary swaging (RS) multilevel deformation. In order to investigate microstructure features and mechanical properties for all considered material states, SEM, TEM, XRD and tensile and hardness tests were employed. The two-dimensional mismatch between alpha ', beta, and alpha phases was calculated to evaluate the effect of the precipitation of the second phase. The results indicate that the microstructure of Ti-13 Nb-13Zr alloy transformed into majority of alpha ' martensite and a small percentage of residual metastable beta m phase after ST. The grains were significantly refined, and a small part of alpha phase was precipitated during ECAP-Conform. As a result of ECAP-Conform + RS, the average grain size was refined from 34 mu m after ST to 152 nm. The vast majority of the unstable phase was retained. Due to the ECAP-Conform + RS, the tensile strength increased to 1167.7 MPa while the elongation was 8.6%. The two-dimensional mismatch between alpha ', alpha, and beta phases was 22.1%, which belongs to a semi-coherent relationship. The excellent mechanical properties were mainly attributed to the strengthening by alpha phase precipitation, dislocation strengthening, and grain refinement.

Czech name

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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

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

1873-4669

Volume of the periodical

969

Issue of the periodical within the volume

DEC 25 2023

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

nestránkováno

UT code for WoS article

001089078000001

EID of the result in the Scopus database

2-s2.0-85172940384