Dependence of Room Temperature Tensile Properties on Volume Fraction of Discontinuous Precipitates in Cast AZ91 Magnesium Alloy

• Autorzy: Jun Joong-Hwan

Identyfikatory

DOI

10.24425/amm.2019.129511

• Języki publikacji: EN

Abstrakty

EN

The objective of this study was to investigate the dependence of the room temperature tensile properties on the volume fraction of discontinuous precipitates (DPs) in a cast AZ91 magnesium alloy. In order to obtain various volume fractions of DPs, the solution-treated alloy was aged at 428 K for up to 48 h. The volume fraction of DPs increased from 0% to 72% with an increase in the aging time up to 24 h; for aging times longer than 24 h, discontinuous precipitation was substantially inhibited owing to the occurrence of significant continuous precipitation within the α-(Mg) grains. YS and UTS of the alloy increased with the volume fraction of DPs, whereas the elongation showed a reverse trend. A relatively rapid change in the tensile properties with increasing volume fraction of DPs up to ~40% was noted, which would be due to the reduction of the effective α grain size in response to the formation of DPs along the grain boundaries.

Słowa kluczowe

EN

discontinuous precipitates; microstructure; AZ91 alloy; aging; tensile properties

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 3
• Strony: 1183--1186
• Opis fizyczny: Bibliogr. 22 poz., fot., rys.

Twórcy

autor

Jun Joong-Hwan

• Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group, Incheon 21999, Republic of Korea

Bibliografia

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Uwagi

EN

1. This study was supported by the Korea Institute of Industrial Technology (KITECH UR-18-0014).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).