粉末床熔合电子束增材制造AlSi10Mg合金T6热处理过程中的组织演变

Q4 Materials Science

Keikinzoku/Journal of Japan Institute of Light Metals Pub Date : 2022-06-15 DOI:10.2464/jilm.72.321

Kohei Yamakawa, Huakang Bian, K. Aoyagi, K. Yamanaka, A. Chiba

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引用次数: 0

摘要

采用粉末床熔合电子束(PBF-EB)熔炼技术制备了AlSi10Mg合金。本文主要研究了后热处理对合金组织和力学性能的影响。在最佳时效条件下，即240°C时效0.1 ks, 200°C时效1.0 ks, 160°C时效43.2 ks，硬度达到峰值。时效过程中，纳米级细Si相再析出，使AlSi10Mg合金增强。拉伸强度提高到>300 MPa，拉伸伸长率保持在15%左右。本研究为今后调控轻量化合金组织提供了一种可能的方法。

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Microstructure evolution during T6 heat treatment in an additive manufactured AlSi10Mg alloy using powder bed fusion-electron beam

The AlSi10Mg alloy was manufactured via the powder bed fusion-electron beam (PBF-EB) melting technology. The present study mainly focused on the inﬂuence of post heat treatment on microstructure and mechanical proper -ties. The peak hardness was obtained under optimal aging conditions, such as 240°C for 0.1 ks, 200°C for 1.0 ks, and 160°C for 43.2 ks, respectively. The nanoscale and ﬁne Si phase reprecipitated during aging process, giving rise to the strengthening of as-built AlSi10Mg alloy. The tensile strength increased to>300 MPa while the tensile elon-gation remained approximately 15%. The present study provides a potential method to regulate the microstructure of light-weight alloy in future.

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来源期刊

Keikinzoku/Journal of Japan Institute of Light Metals Materials Science-Metals and Alloys

CiteScore

0.40

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0.00%

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