“氢化物技术”和机械处理制备的Al3Er中间合金的组织、相组成和性能

IF 0.6 4区 化学 Q4 CHEMISTRY, APPLIED
S. D. Sokolov, N. I. Karakchieva, Yu. A. Abzaev, N. I. Kakhidze, I. A. Zhukov, V. I. Sachkov, A. B. Vorozhtsov
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引用次数: 0

摘要

稀土元素的加入通过形成、强化金属间相,对基体合金的显微组织、力学性能和整体性能产生了有益的影响。本研究的重点是采用“氢化技术”生产Al3Er中间合金,包括铒的初步氢化和起始部件的机械加工。研究了Al-Er混合粉末预力学处理对Al3Er中间合金组织和性能的影响。预机械加工得到的主合金具有均匀的组织,包括均匀分散的Al3Er夹杂物的铝基体。沿Al固溶体的边界观察到分散共晶的薄夹层,富含约20 - 25wt %的铒。采用Rietveld法对Al3Er中间合金进行结构分析,发现两种金属相:铝固溶体(~95.14%)和金属间化合物Al3Er(~4.86%)。加工过程中,以Al3Er为主区域的平均维氏显微硬度值为(92.4±8.0)HV,最大值为(105±8.0)HV。相比之下,这些区域未经加工的主合金的平均显微硬度值为(68.4±8.0)HV。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Structure, Phase Composition and Properties of Al3Er Master Alloys Obtained by “Hydride Technology” and Mechanical Treatment

Structure, Phase Composition and Properties of Al3Er Master Alloys Obtained by “Hydride Technology” and Mechanical Treatment

The incorporation of rare-earth metals beneficially influences the microstructure, mechanical properties, and overall performance of base alloys by forming modifying and strengthening intermetallic phases. This investigation focuses on the production of Al3Er master alloy using “hydride technology,” involving the preliminary hydrogenation of erbium and mechanical processing of starting components. The study demonstrates the impact of pre-mechanical treatment of an Al–Er powder mixture on the structure and properties of Al3Er master alloy. The master alloy obtained with pre-mechanical processing exhibits a homogeneous structure comprising an aluminium matrix with evenly dispersed Al3Er inclusions. Thin interlayers of dispersed eutectics, enriched with approximately 20–25 wt % erbium, are observed along the boundaries of the Al solid solution. Structural analysis of Al3Er master alloy using the Rietveld method revealed two metallic phases: aluminium solid solutions (~95.14%) and the intermetallic compound Al3Er (~4.86%). With machining, the average Vickers microhardness value of regions predominantly composed of Al3Er was (92.4 ± 8.0) HV, reaching a maximum of (105 ± 8.0) HV. In contrast, the average microhardness value of the master alloy obtained without machining in these areas was (68.4 ± 8.0) HV.

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来源期刊
CiteScore
1.60
自引率
11.10%
发文量
63
审稿时长
2-4 weeks
期刊介绍: Russian Journal of Applied Chemistry (Zhurnal prikladnoi khimii) was founded in 1928. It covers all application problems of modern chemistry, including the structure of inorganic and organic compounds, kinetics and mechanisms of chemical reactions, problems of chemical processes and apparatus, borderline problems of chemistry, and applied research.
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