Characterisation of AlScZr and AlErZr alloys processed by rapid laser melting

Qingbo Jia, Paul Rometsch, Sheng Cao, Kai Zhang, Aijun Huang, Xinhua Wu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

AlScZr and AlErZr alloys with Sc or Er additions of ~0.6 at.% were prepared by a novel wedge mould casting and laser remelting methodology. Precipitation strengthening and thermal stability were studied using hardness testing and transmission electron microscopy. After ageing, the AlScZr alloy achieved a peak hardness of 113 HV0.5 and possessed pronounced thermal stability, while the AlErZr alloy obtained a maximum hardness of 84 HV0.5 and experienced relatively rapid over-ageing. Compared with Sc, the lower solubility of Er even after laser remelting and its more rapid diffusivity are responsible for the relatively lower ageing response and poorer thermal stability.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalScripta Materialia
Volume151
DOIs
Publication statusPublished - 1 Jul 2018

Cite this

@article{0aa6b39ef0434162b543a604426b7593,
title = "Characterisation of AlScZr and AlErZr alloys processed by rapid laser melting",
abstract = "AlScZr and AlErZr alloys with Sc or Er additions of ~0.6 at.{\%} were prepared by a novel wedge mould casting and laser remelting methodology. Precipitation strengthening and thermal stability were studied using hardness testing and transmission electron microscopy. After ageing, the AlScZr alloy achieved a peak hardness of 113 HV0.5 and possessed pronounced thermal stability, while the AlErZr alloy obtained a maximum hardness of 84 HV0.5 and experienced relatively rapid over-ageing. Compared with Sc, the lower solubility of Er even after laser remelting and its more rapid diffusivity are responsible for the relatively lower ageing response and poorer thermal stability.",
author = "Qingbo Jia and Paul Rometsch and Sheng Cao and Kai Zhang and Aijun Huang and Xinhua Wu",
year = "2018",
month = "7",
day = "1",
doi = "10.1016/j.scriptamat.2018.03.035",
language = "English",
volume = "151",
pages = "42--46",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier",

}

Characterisation of AlScZr and AlErZr alloys processed by rapid laser melting. / Jia, Qingbo; Rometsch, Paul; Cao, Sheng; Zhang, Kai; Huang, Aijun; Wu, Xinhua.

In: Scripta Materialia, Vol. 151, 01.07.2018, p. 42-46.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Characterisation of AlScZr and AlErZr alloys processed by rapid laser melting

AU - Jia, Qingbo

AU - Rometsch, Paul

AU - Cao, Sheng

AU - Zhang, Kai

AU - Huang, Aijun

AU - Wu, Xinhua

PY - 2018/7/1

Y1 - 2018/7/1

N2 - AlScZr and AlErZr alloys with Sc or Er additions of ~0.6 at.% were prepared by a novel wedge mould casting and laser remelting methodology. Precipitation strengthening and thermal stability were studied using hardness testing and transmission electron microscopy. After ageing, the AlScZr alloy achieved a peak hardness of 113 HV0.5 and possessed pronounced thermal stability, while the AlErZr alloy obtained a maximum hardness of 84 HV0.5 and experienced relatively rapid over-ageing. Compared with Sc, the lower solubility of Er even after laser remelting and its more rapid diffusivity are responsible for the relatively lower ageing response and poorer thermal stability.

AB - AlScZr and AlErZr alloys with Sc or Er additions of ~0.6 at.% were prepared by a novel wedge mould casting and laser remelting methodology. Precipitation strengthening and thermal stability were studied using hardness testing and transmission electron microscopy. After ageing, the AlScZr alloy achieved a peak hardness of 113 HV0.5 and possessed pronounced thermal stability, while the AlErZr alloy obtained a maximum hardness of 84 HV0.5 and experienced relatively rapid over-ageing. Compared with Sc, the lower solubility of Er even after laser remelting and its more rapid diffusivity are responsible for the relatively lower ageing response and poorer thermal stability.

UR - http://www.scopus.com/inward/record.url?scp=85044931632&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2018.03.035

DO - 10.1016/j.scriptamat.2018.03.035

M3 - Article

VL - 151

SP - 42

EP - 46

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

ER -