Microstructural evaluation of Al-2.5wt.%Mg- 0.7wt.%Li in as cast condition

Znanstveni rad - Izvorni znanstveni rad

• Autor: Franjo Kozina
• Autor: Zdenka Zovko Brodarac
• Autor: Mitja Petrič
• Urednik: Zdenka Zovko Brodarac
• Urednik: Natalija Dolić
• Urednik: Anita Begić Hadžipašić
• Autorova ustanova: Sveučilište u Zagrebu; Metalurški fakultet; (Zavod za procesnu metalurgiju); (Laboratorij za željezo, čelik i ljevarstvo)
• Znanstveno / umjetničko područje, polje i grana: TEHNIČKE ZNANOSTI; Metalurgija; Procesna metalurgija

Sažetak (hrvatski)

The intention of designing of innovative engineering materials with advanced properties found its role in special purposes, such as aerospace application. The main issue has been recognized as a weight savings, stiffness development and mechanical properties. Lithium, in Al-Mg-Li alloys, plays a significant role through stimulation of precipitation hardening, increasing of Young’s modulus, stiffness, fracture toughness and enhancing corrosion resistance. Other significant alloying element such as magnesium influences strengthening effect by enhancing the precipitation of metastable δ’ (Al3Li) phase. This indirect strengthening effect is possible due to fact that magnesium reduces solubility of lithium in aluminium. While the mechanism of this indirect strengthening seems to be simple, it is not fully understood if presence of magnesium merely changes the phase stability, interfacial energy or diffusion coefficient. In order to understand magnesium role in Al-Mg-Li ternary system, Al- 2.5wt.%Mg–0.7wt.%Li was produced under laboratory conditions. Obtained results of Thermo-Calc calculations and microstructural investigation enabled valuation of solidification sequence and micro constituent’s development and/or transformation.

• Ključne riječi (hrvatski): Al-Mg-Li alloy, lithium, magnesium, density, phase precipitation
• Jezik: hrvatski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov zbornika: Proceedings Book- 16th International Foundrymen Conference- Global Foundry Industry- Perspectives for the Future
• Brojčani podaci: str. 128-139
• ISBN: 978-953-7082-26-0
• URN:NBN: urn:nbn:hr:115:561730
• Datum objave publikacije: 2016-05-11
• Skup: Naziv: 16th INTERNATIONAL FOUNDRYMEN CONFERENCE Global Foundry Industry – Perspectives for the Future; Kratica: IFC2017; Lokacija: Opatija, Hrvatska; Datum početka: 2017-05-15; Datum završetka: 2017-05-19; Vrsta izlaganja: Predavanje
• Vrsta resursa: Tekst
• Izdavač: Sveučilište u Zagrebu Metalurški fakultet
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2022-09-30 07:48:14