首页|Hardening and precipitation behavior of as-quenched Al–0.4Mg–1.0Si alloy with minor Sn addition at different aging temperatures

Hardening and precipitation behavior of as-quenched Al–0.4Mg–1.0Si alloy with minor Sn addition at different aging temperatures

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The effect of Sn on the hardening and corresponding precipitation behavior of as-quenched Al–0.4Mg–1.0Si alloy at different aging temperatures was investigated with hardness tests, differential scanning calorimetry analysis, and transmission electron microscopy. The hardness of the Sn-free alloy was higher than that of the Sn-added alloys during under-aging, but the tendency is reversed during over-aging. The effect of Sn on the hardening behavior of these alloys is not substantially affected by the aging temperature, i.e., the addition of Sn can improve resistance to over-aging softening at different aging temperatures. The reason for the resistance to over-aging softening by the addition of Sn is related to the increase in the number density of precipitates during under-aging and the decrease in precipitates size during over-aging.

Aging temperatureArtificial agingPrecipitatesSn addition

Tu W.、Chen W.、Wang S.、Tang J.、Ma L.、Zhao Y.

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Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province Nanchang Hangkong University

School of Materials Science and Engineering Central South University

2022

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN:0925-8388
年,卷(期):2022.902
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