PRECIPITATION KINETICS IN Mg-Gd ALLOY AFTER NATURAL AGEING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284876" target="_blank" >RIV/00216208:11320/14:10284876 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.metal2014.com/files/proceedings/17/reports/2679.pdf" target="_blank" >http://www.metal2014.com/files/proceedings/17/reports/2679.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

PRECIPITATION KINETICS IN Mg-Gd ALLOY AFTER NATURAL AGEING

Popis výsledku v původním jazyce

Annealing at ambient temperature connected with a substantial degree of strengthening (natural ageing) is well known and investigated in Al-based alloys. Clustering of solute atoms at room temperature proven by atom probe tomography is believed to be assisted by vacancies quenched in material from high annealing temperature. This process has often a very deteriorating effect on further precipitation during artificial ageing of Al alloys. Natural ageing is not common in Mg-based alloys contrary to Al hardenable alloys. Two squeeze cast Mg-Gd alloys with different Gd content were solution heat treated. The increase of solute concentration in the matrix during the treatment was monitored by electrical resistivity measurements. Microhardness decrease during the solution heat treatment corresponds to dissolution of secondary phases combined with solid solution hardening. Electrical resistivity of both alloys measured at 77 K decreases, if the alloys are kept at room temperature immediately

Název v anglickém jazyce

PRECIPITATION KINETICS IN Mg-Gd ALLOY AFTER NATURAL AGEING

Popis výsledku anglicky

Annealing at ambient temperature connected with a substantial degree of strengthening (natural ageing) is well known and investigated in Al-based alloys. Clustering of solute atoms at room temperature proven by atom probe tomography is believed to be assisted by vacancies quenched in material from high annealing temperature. This process has often a very deteriorating effect on further precipitation during artificial ageing of Al alloys. Natural ageing is not common in Mg-based alloys contrary to Al hardenable alloys. Two squeeze cast Mg-Gd alloys with different Gd content were solution heat treated. The increase of solute concentration in the matrix during the treatment was monitored by electrical resistivity measurements. Microhardness decrease during the solution heat treatment corresponds to dissolution of secondary phases combined with solid solution hardening. Electrical resistivity of both alloys measured at 77 K decreases, if the alloys are kept at room temperature immediately

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP108%2F10%2F0648" target="_blank" >GAP108/10/0648: Studium defektů v ikosaedrálních fázích v Mg slitinách</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2014, 23rd International Conferenceon Metallurgy and Materials, Conference proceedings

ISBN

978-80-87294-54-3

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1277-1282

Název nakladatele

Tanger, Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

21. 5. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000350641700211