Choosing a suitable heat treatment regime for stress-relief and microstructure stabilization of Ti6Al4V alloy 3D-printed by SLM method

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921448" target="_blank" >RIV/60461373:22310/20:43921448 - isvavai.cz</a>

Result on the web

<a href="https://www.scientific.net/DDF.403.11" target="_blank" >https://www.scientific.net/DDF.403.11</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.403.11" target="_blank" >10.4028/www.scientific.net/DDF.403.11</a>

Result language

angličtina

Original language name

Choosing a suitable heat treatment regime for stress-relief and microstructure stabilization of Ti6Al4V alloy 3D-printed by SLM method

Original language description

&quot;During the processing of Ti6Al4V alloy by a 3D printing method SLM (selective laser melting), high internal stresses are developed in the material as a result of high temperature gradients between microvolumes of the powder melted at a given time and the already solidified material. Cooling rates thus reach up to the order of 108 °C·s-1. At such rates, a diffusionless martensitic transformation occurs, which also contributes to internal stresses in the material. High internal stresses can be a problem already during production; they can manifest themselves by cracking of products, deformations of thin parts, etc. Even in defectless products, internal stresses negatively affect their properties; in particular, they reduce ductility. Therefore, it is desirable to include a heat treatment after the 3D printing, which would reduce the stresses and transform the metastable martensitic structure into a stable one. As a result of the heat treatment, the ductility increases at the expense of strength. The subject of this paper is to find such heat treatment regime that provides the best combination of mechanical properties.&quot;

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Defekt and Diffusion Forum

ISSN

1012-0386

e-ISSN

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Volume of the periodical

403

Issue of the periodical within the volume

september

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

11-18

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85093103304