分散颗粒对 93W-4.6Ni-2.1Fe-0.3Co 合金微观结构演变和机械性能的影响

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Mingming Wang, Lijun Cao, Boyu Jiang, Ziming Chen, Liukui Gong, Jinqi Ruan, Lixun Deng, Wei Huang
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引用次数: 0

摘要

本文采用两步烧结法制备了由 ZrC 粒子增强的 93W-4.6Ni-2.1Fe-0.3Co 合金。传统的烧结工艺温度为 1485 ℃,较大的分散颗粒与基体之间会形成微空洞,从而导致拉伸性能下降(959 MPa/11.5%)。通过将烧结温度控制在 1440 ℃,得到了综合拉伸性能优异(974 MPa/27.0%)的分散强化钨重质合金(WHAs),这主要归功于均匀分散强化和晶界净化的协同效应。在高压缩应变速率下,分散强化的 WHA 与 WHA 相比具有更高的屈服强度,这表明分散强化的 WHA 在穿甲领域具有潜在的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of dispersed particles on microstructure evolution and mechanical properties of 93W–4.6Ni–2.1Fe–0.3Co alloys
93W–4.6Ni–2.1Fe–0.3Co alloys reinforced by ZrC particles were prepared by the two-step sintering method in this article. The conventional sintering process conducted at a temperature of 1485 °C resulted in the formation of microvoids between the larger dispersed particles and the matrix, thereby leading to a degradation in the tensile property (959 MPa/11.5%). Through controlling the sintering temperature at 1440 °C, a dispersion-strengthened tungsten heavy alloys (WHAs) with excellent comprehensive tensile properties (974 MPa/27.0%) was obtained, mainly attributed to the synergistic effect of homogeneous dispersion strengthening and grain boundary purification. Under high compressive strain rates, dispersion-strengthened WHA demonstrates a superior yield strength compared to WHA, suggesting that dispersion-strengthened WHAs have potential applications in the armour-piercing field.
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来源期刊
Accounts of Chemical Research
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.
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