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选择性激光熔化制备的AlSi10Mg合金的溶质聚集与过饱和固溶体

Solute clustering and supersaturated solid solution of AlSi10Mg alloy fabricated by selective laser melting.

作者信息

Maeshima Takashi, Oh-Ishi Keiichiro

机构信息

Toyota Central R&D Labs. Inc., Japan.

出版信息

Heliyon. 2019 Feb 6;5(2):e01186. doi: 10.1016/j.heliyon.2019.e01186. eCollection 2019 Feb.

DOI:10.1016/j.heliyon.2019.e01186
PMID:30793055
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6370582/
Abstract

α-Al grains surrounded by Al-Si eutectic as the substructures in AlSi10Mg alloy fabricated by selective laser melting (SLM) were investigated in detail using three-dimensional atom-probe and transmission electron microscopy. Quantitative analysis of α-Al revealed (1) the formation of Mg clusters and Mg-Si co-clusters with a density in the order of 10 /m in α-Al of the as-built state caused by the complicated thermal history, and (2) a supersaturated Si content that significantly exceeded the maximum solubility due to rapid solidification, during the SLM process.

摘要

利用三维原子探针和透射电子显微镜对选择性激光熔化（SLM）制备的AlSi10Mg合金中以α-Al晶粒被Al-Si共晶包围作为亚结构的情况进行了详细研究。对α-Al的定量分析表明：（1）由于复杂的热历史，在铸态α-Al中形成了密度约为10 /m的Mg团簇和Mg-Si共团簇；（2）在SLM过程中，由于快速凝固，硅含量过饱和，大大超过了最大溶解度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/ddb3da46178a/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/350a2b906b59/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/a8baadf79ffa/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/98d646f83b4a/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/9431a9cfa9e0/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/62c8401553d3/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/c755fd85a67e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/ddb3da46178a/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/350a2b906b59/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/a8baadf79ffa/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/98d646f83b4a/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/9431a9cfa9e0/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/62c8401553d3/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/c755fd85a67e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c24d/6370582/ddb3da46178a/gr7.jpg

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