Effect of Yb microadditions on creep resistance of a dilute Al-Er-Sc-Zr alloy

• Published in: Materialia Vol. 4; pp. 65 - 69
• Main Authors: Vo, Nhon Q., Bayansan, Davaadorj, Sanaty-Zadeh, Amirreza, Ramos, Evander H., Dunand, David C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2018
• Subjects: Al-Yb-Er-Sc-Zr alloy; Atom-probe tomography; Creep; High-temperature alloy; Strengthening; Strengthening; High-temperature alloy; Creep; Al-Yb-Er-Sc-Zr alloy; Atom-probe tomography

A dilute Al-0.02Yb-0.01Er-0.03Sc-0.03Zr (at.%) alloy was aged to create a high number density of Al3(Sc0.56Yb0.14Er0.10Zr0.20) nanoprecipitates, with 3.5 nm radius, an Yb- and Er-enriched core and Sc- and Zr-enriched shells, as measured via atom-probe tomography. At 400 °C, the alloy exhibits a 17 M...