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经过机械合金化和压制成形的高强度超细晶粒铝镁硅合金：与铸造合金的比较。

High-Strength Ultrafine-Grained Al-Mg-Si Alloys Exposed to Mechanical Alloying and Press-Forming: A Comparison with Cast Alloys.

作者信息

Zhong Wenjie, Song Lin, Tang Huaguo, Wu Xu, Qiao Zhuhui, Liu Xunyong

机构信息

Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China.

School of Chemistry and Materials Science, Ludong University, Yantai 264025, China.

出版信息

Materials (Basel). 2024 Dec 29;18(1):99. doi: 10.3390/ma18010099.

DOI:10.3390/ma18010099
PMID:39795744
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11721867/
Abstract

A high-strength Al-Mg-Si alloy was prepared using mechanical alloying (MA) combined with press-forming (PF) technology, achieving a strength of up to 715 MPa and a hardness of 173 HB. The microstructures were comparatively analyzed with conventional cast Al-Mg-Si alloys using XRD, TKD, and TEM. The XRD results showed that the full width at half maximum (FWHM) of the alloy prepared by MA+PF was significantly broadened and accompanied by a shift in the diffraction peak. TKD revealed that the grain size of the MA+PF processed alloy was significantly reduced to approximately 260 nm, indicating substantial refinement compared to the cast alloy. Additionally, using TEM, it was found that the newly developed MA+PF alloy exhibited a distinct morphology of MgSi precipitation phases and a high density of stacking faults (SFs), characteristics that differed from those in the cast alloy. The significant enhancement in strength can be attributed to the synergistic strengthening effects of grain refinement, second-phase precipitation, and stacking fault strengthening, as synthesized and analyzed.

摘要

采用机械合金化（MA）与压制成形（PF）技术制备了一种高强度Al-Mg-Si合金，其强度高达715MPa，硬度为173HB。利用XRD、TKD和TEM对该合金的微观结构与传统铸造Al-Mg-Si合金进行了对比分析。XRD结果表明，通过MA+PF制备的合金的半高宽（FWHM）显著变宽，且衍射峰发生了偏移。TKD显示，经MA+PF处理的合金的晶粒尺寸显著减小至约260nm，表明与铸造合金相比有大幅细化。此外，利用TEM发现，新开发的MA+PF合金呈现出独特的MgSi析出相形态和高密度的层错（SFs），这些特征与铸造合金不同。如合成与分析所示，强度的显著提高可归因于晶粒细化、第二相析出和层错强化的协同强化作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/f418ad2c547b/materials-18-00099-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/2ee899b9116d/materials-18-00099-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/ab07d9ee7773/materials-18-00099-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/1dfa4bd39e6f/materials-18-00099-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/73c921e7b42a/materials-18-00099-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/bf6ad64bd042/materials-18-00099-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/f418ad2c547b/materials-18-00099-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/2ee899b9116d/materials-18-00099-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/5fb3f4c304f2/materials-18-00099-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/759583f7467d/materials-18-00099-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/fd0794df61cf/materials-18-00099-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/ab07d9ee7773/materials-18-00099-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/1dfa4bd39e6f/materials-18-00099-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/73c921e7b42a/materials-18-00099-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/bf6ad64bd042/materials-18-00099-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45c3/11721867/f418ad2c547b/materials-18-00099-g009.jpg

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本文引用的文献

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2
Effect of a Trace Addition of Sn on the Aging Behavior of Al-Mg-Si Alloy with a Different Mg/Si Ratio.微量添加锡对不同镁硅比的铝镁硅合金时效行为的影响。
Materials (Basel). 2020 Feb 19;13(4):913. doi: 10.3390/ma13040913.
3
Numerical and Experimental Study on Melt Treatment for Large-Volume 7075 Alloy by a Modified Annular Electromagnetic Stirring.
大体积7075合金采用改进型环形电磁搅拌熔体处理的数值与实验研究
Materials (Basel). 2019 Mar 11;12(5):820. doi: 10.3390/ma12050820.