Effects of microstructure on mechanical properties of CuNiSi alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10369344" target="_blank" >RIV/00216208:11320/17:10369344 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jallcom.2016.11.233" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2016.11.233</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2016.11.233" target="_blank" >10.1016/j.jallcom.2016.11.233</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of microstructure on mechanical properties of CuNiSi alloys

Popis výsledku v původním jazyce

There is an increasing demand for precipitation-hardened Cu-Ni-Si alloys in the industry, where the high strength and moderate electrical conductivity are required. The main objective of this study was to apply a combination of microstructure refinement using swaging (SW) to generate an ultrafine-grained (UFG) microstructure in Cu-2.5 wt% Ni-0.5 wt% Si-0.06 wt% Mg (Cu-2.5Ni-0.5Si-0.06Mg), along with an optimized precipitation hardening. As a result, a substantial improvement of mechanical properties of the swaged samples (UFG condition) after precipitation hardening is apparent as compared to the precipitation-hardened non-swaged samples (coarse-grained (CG) condition). The mechanical properties of the UFG state are significantly superior to those of the CG state, i.e., a sharp increase in the elongation to fracture of 14% and a tensile strength of 800-900 MPa can be achieved. This study summarizes a detailed description of the microstructure after different processing steps using optical microscope (OM), electron channeling contrast imaging (ECCI) methods, and transmission electron microscopy (TEM), and presents the consequences on the most important mechanical properties such as the strength and ductility.

Název v anglickém jazyce

Effects of microstructure on mechanical properties of CuNiSi alloys

Popis výsledku anglicky

There is an increasing demand for precipitation-hardened Cu-Ni-Si alloys in the industry, where the high strength and moderate electrical conductivity are required. The main objective of this study was to apply a combination of microstructure refinement using swaging (SW) to generate an ultrafine-grained (UFG) microstructure in Cu-2.5 wt% Ni-0.5 wt% Si-0.06 wt% Mg (Cu-2.5Ni-0.5Si-0.06Mg), along with an optimized precipitation hardening. As a result, a substantial improvement of mechanical properties of the swaged samples (UFG condition) after precipitation hardening is apparent as compared to the precipitation-hardened non-swaged samples (coarse-grained (CG) condition). The mechanical properties of the UFG state are significantly superior to those of the CG state, i.e., a sharp increase in the elongation to fracture of 14% and a tensile strength of 800-900 MPa can be achieved. This study summarizes a detailed description of the microstructure after different processing steps using optical microscope (OM), electron channeling contrast imaging (ECCI) methods, and transmission electron microscopy (TEM), and presents the consequences on the most important mechanical properties such as the strength and ductility.

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

<a href="/cs/project/GB14-36566G" target="_blank" >GB14-36566G: Multidisciplinární výzkumné centrum moderních materiálů</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

696

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

201-212

Kód UT WoS článku

000391819800029

EID výsledku v databázi Scopus

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