Selective laser melting of iron: multiscale characterization of mechanical properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00541825" target="_blank" >RIV/68378271:_____/21:00541825 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/21:00541825 RIV/60461373:22310/21:43922809

Výsledek na webu

<a href="https://doi.org/10.1016/j.msea.2020.140316" target="_blank" >https://doi.org/10.1016/j.msea.2020.140316</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.140316" target="_blank" >10.1016/j.msea.2020.140316</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selective laser melting of iron: multiscale characterization of mechanical properties

Popis výsledku v původním jazyce

The complex study of the mechanical properties of pure iron produced by selective laser melting (SLM) revealed enhanced values of the yield stress and ultimate tensile strength as compared to the material produced in a classic way. These values result from high dislocation density, presence of interstitial carbon and small precipitates. In situ tensile experiments revealed that the basic mechanism of plastic deformation in this material, the structure of which was described in detail previously [Mater. Charact. 154 (2019) 222], is the emission of dislocations from dislocation walls in the material. From the yield drop at the stress-strain dependence, the effective binding energy of carbon to dislocations is estimated. SLM iron also exhibits anisotropy of nanohardness showing maxima for orientations in the middle of the orientation triangle but also at {100} and {110} corners. This anisotropy suggests that the deformation is affected by the splitting of 1/2(111) dislocations on {110} planes into partials on {112} planes.

Název v anglickém jazyce

Selective laser melting of iron: multiscale characterization of mechanical properties

Popis výsledku anglicky

The complex study of the mechanical properties of pure iron produced by selective laser melting (SLM) revealed enhanced values of the yield stress and ultimate tensile strength as compared to the material produced in a classic way. These values result from high dislocation density, presence of interstitial carbon and small precipitates. In situ tensile experiments revealed that the basic mechanism of plastic deformation in this material, the structure of which was described in detail previously [Mater. Charact. 154 (2019) 222], is the emission of dislocations from dislocation walls in the material. From the yield drop at the stress-strain dependence, the effective binding energy of carbon to dislocations is estimated. SLM iron also exhibits anisotropy of nanohardness showing maxima for orientations in the middle of the orientation triangle but also at {100} and {110} corners. This anisotropy suggests that the deformation is affected by the splitting of 1/2(111) dislocations on {110} planes into partials on {112} planes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A Structural Materials Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Svazek periodika

800

Číslo periodika v rámci svazku

Jan

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

140316

Kód UT WoS článku

000593929200003

EID výsledku v databázi Scopus

2-s2.0-85091942449