Liwang Zhang , Caiju Li , Zunyan Xu , Liyuan Liu , Li Fu , Peng Gao , Qiong Lu , Jingmei Tao , Rui Bao , Jianhong Yi
{"title":"通过设计双峰晶和微纳增强剂来平衡纳米sic增强crmnnfeconi高熵合金的强度和塑性","authors":"Liwang Zhang , Caiju Li , Zunyan Xu , Liyuan Liu , Li Fu , Peng Gao , Qiong Lu , Jingmei Tao , Rui Bao , Jianhong Yi","doi":"10.1016/j.vacuum.2025.114036","DOIUrl":null,"url":null,"abstract":"<div><div>The CrMnFeCoNi high-entropy alloy faces limitations in engineering applications due to insufficient room-temperature strength and a suboptimal strength-ductility synergy. This research tackles these limitations by incorporating nano-SiC particles and refining the processing techniques to create a bimodal grain structure. This approach facilitates micro-nano reinforcements and successfully prevents the development of brittle phases. Consequently, the alloy exhibits a yield strength of 595.89 MPa, tensile strength of 891.92 MPa, and an elongation of 10.34 %. Dynamic Hall-Petch effects and twinning-induced plasticity are activated during deformation, facilitating concurrent enhancement of strength and ductility.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"233 ","pages":"Article 114036"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Balancing the strength and ductility of nano-SiC reinforced CrMnFeCoNi high-entropy alloy through designing bimodal grains and micro-nano reinforcements\",\"authors\":\"Liwang Zhang , Caiju Li , Zunyan Xu , Liyuan Liu , Li Fu , Peng Gao , Qiong Lu , Jingmei Tao , Rui Bao , Jianhong Yi\",\"doi\":\"10.1016/j.vacuum.2025.114036\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The CrMnFeCoNi high-entropy alloy faces limitations in engineering applications due to insufficient room-temperature strength and a suboptimal strength-ductility synergy. This research tackles these limitations by incorporating nano-SiC particles and refining the processing techniques to create a bimodal grain structure. This approach facilitates micro-nano reinforcements and successfully prevents the development of brittle phases. Consequently, the alloy exhibits a yield strength of 595.89 MPa, tensile strength of 891.92 MPa, and an elongation of 10.34 %. Dynamic Hall-Petch effects and twinning-induced plasticity are activated during deformation, facilitating concurrent enhancement of strength and ductility.</div></div>\",\"PeriodicalId\":23559,\"journal\":{\"name\":\"Vacuum\",\"volume\":\"233 \",\"pages\":\"Article 114036\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Vacuum\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0042207X25000260\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/13 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X25000260","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/13 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Balancing the strength and ductility of nano-SiC reinforced CrMnFeCoNi high-entropy alloy through designing bimodal grains and micro-nano reinforcements
The CrMnFeCoNi high-entropy alloy faces limitations in engineering applications due to insufficient room-temperature strength and a suboptimal strength-ductility synergy. This research tackles these limitations by incorporating nano-SiC particles and refining the processing techniques to create a bimodal grain structure. This approach facilitates micro-nano reinforcements and successfully prevents the development of brittle phases. Consequently, the alloy exhibits a yield strength of 595.89 MPa, tensile strength of 891.92 MPa, and an elongation of 10.34 %. Dynamic Hall-Petch effects and twinning-induced plasticity are activated during deformation, facilitating concurrent enhancement of strength and ductility.
期刊介绍：
Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences.
A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below.
The scope of the journal includes:
1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes).
2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis.
3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification.
4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.
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