Influence of second phase precipitates on the microstructure and mechanical properties of WE43-0.5Ca alloy during hot deformation process

IF 17.7 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-15 DOI:10.1177/02670836241245817
Mengyuan Xia, Hui-wen Zhu, B. Yu, Li Zheng, Shunning Lv, Lei Li, Tao Huang
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Abstract

The WE43-0.5Ca alloy was processed by the combination of extrusion, ageing treatment and rolling in the present study. The results showed that the strength of the alloy is better at an extrusion temperature of 470 °C. The alloy was then subjected to ageing treatment. The alloy aged for 14 h had the highest strength. However, there was still a high amount of the second phase enriched at the shear bands. The as-extruded state alloy was rolled. The strength of the alloy in the rolled state was significantly increased. Broken into fine second-phase particles during rolling, these second-phase particles are diffusely distributed in the matrix, resulting in second-phase strengthening that enhances the strength of the alloy.
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热变形过程中第二相析出物对 WE43-0.5Ca 合金微观结构和机械性能的影响
本研究采用挤压、时效处理和轧制相结合的方法对 WE43-0.5Ca 合金进行了加工。结果表明,挤压温度为 470 ℃ 时,合金的强度较高。然后对合金进行时效处理。时效处理 14 小时的合金强度最高。然而,在剪切带处仍然富集了大量的第二相。对挤压状态的合金进行轧制。轧制状态下的合金强度显著提高。在轧制过程中破碎成细小的第二相颗粒,这些第二相颗粒弥散地分布在基体中,导致第二相强化,从而提高了合金的强度。
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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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