Al-Cu-Mg预合金粉末在超固相液相烧结过程中的致密化和形状变形

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-12-10 DOI:10.22068/IJMSE.17.4.87

H. Momeni, S. Shabestari, S. Razavi

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引用次数: 5

摘要

研究了Al-Cu-Mg（Al2024）预合金粉末压块在超固相液相烧结（SLPS）过程中的致密化和形状畸变。研究了锡对烧结过程的影响。在圆柱形模具中在100至500MPa的压力范围内压实粉末。烧结过程在干燥的N2气氛中，在不同温度（580-620℃）下，以10℃的加热速率进行30分钟。结果表明，致密化过程在600℃开始，变形在610℃开始。向合金中添加0.1wt.%Sn增加了由Al-Cu-Mg预合金粉末制备的样品的畸变，但它们的致密化得到了改善。在最佳烧结温度和大于200MPa的压坯压力下，200MPa的压实压力导致完全致密化；烧结密度与生坯密度无关。

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Densification and Shape Distortion of the Al-Cu-Mg Pre-alloyed Powder Compact in Supersolidus Liquid Phase Sintering Process

In this research, densification and shape distortion of the Al-Cu-Mg (Al2024) pre-alloyed powder compact in the supersolidus liquid phase sintering (SLPS) process were investigated. The effect of Sn on the sintering process was also studied. The powders were compacted at pressures ranging from 100 to 500 MPa in a cylindrical die. The sintering process was performed in a dry N2 atmosphere at various temperatures (580-620 ̊C) for 30 min at a heating rate of 10 ̊C min. Results showed that the onset of the densification process was observed at 600 ̊C and the onset of distortion occurred at 610 ̊C. Addition of 0.1 wt. % Sn to the alloy has increased the distortion of the samples produced from Al-Cu-Mg pre-alloyed powder, but their densification has been improved. The compact pressure of 200 MPa caused the complete densification at the optimum sintering temperature and the compact pressures greater than 200 MPa; the sintered density was independent of green density.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.