Gan Li , Chunlu Zhao , Yuhe Huang , Qiyang Tan , Junhua Hou , Xi He , Chuan Guo , Wenjun Lu , Lin Zhou , Sida Liu , Lei Zhang , Xuliang Chen , Xinggang Li , Ying Li , Junhua Luan , Zhenmin Li , Xinping Mao , Ming-Xing Zhang , Qiang Zhu , Jian Lu
{"title":"具有纳米结构强化缺陷的添加式制造细晶粒超高强度块状铝合金","authors":"Gan Li , Chunlu Zhao , Yuhe Huang , Qiyang Tan , Junhua Hou , Xi He , Chuan Guo , Wenjun Lu , Lin Zhou , Sida Liu , Lei Zhang , Xuliang Chen , Xinggang Li , Ying Li , Junhua Luan , Zhenmin Li , Xinping Mao , Ming-Xing Zhang , Qiang Zhu , Jian Lu","doi":"10.1016/j.mattod.2024.05.006","DOIUrl":null,"url":null,"abstract":"<div><p>In response to the critical need for lightweight designs and carbon neutrality, we introduce an innovative additively manufactured ultrafine-grained Al-Mg-Mn-Sc-Zr alloy reinforced with nano-structured planar defects via laser powder bed fusion (L-PBF), developed for complex-shaped parts that demand high strength and superior ductility. Owing to the uneven distribution of the L1<sub>2</sub>-ordered Al<sub>3</sub>(Sc, Zr) nanoparticles, the as-printed alloy demonstrates a hierarchically heterogeneous microstructure featuring a triple-modal grain distribution. Tailored planar defects comprising stacking faults, 9R phase and nanotwins are strategically introduced in the as-printed alloy. Beyond the nano-scaled planar defects and the triple-modal grain distribution, further direct ageing process augments the abundance of nanoprecipitates, collectively boosting the yield strength to 656 MPa, which is higher than almost all L-PBFed Al alloys hitherto reported, and a decent ductility of 7.2 %. This work paves the way for the near net shape forming of high-performance Al alloy components for advanced structural applications.</p></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":null,"pages":null},"PeriodicalIF":21.1000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Additively manufactured fine-grained ultrahigh-strength bulk aluminum alloys with nanostructured strengthening defects\",\"authors\":\"Gan Li , Chunlu Zhao , Yuhe Huang , Qiyang Tan , Junhua Hou , Xi He , Chuan Guo , Wenjun Lu , Lin Zhou , Sida Liu , Lei Zhang , Xuliang Chen , Xinggang Li , Ying Li , Junhua Luan , Zhenmin Li , Xinping Mao , Ming-Xing Zhang , Qiang Zhu , Jian Lu\",\"doi\":\"10.1016/j.mattod.2024.05.006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In response to the critical need for lightweight designs and carbon neutrality, we introduce an innovative additively manufactured ultrafine-grained Al-Mg-Mn-Sc-Zr alloy reinforced with nano-structured planar defects via laser powder bed fusion (L-PBF), developed for complex-shaped parts that demand high strength and superior ductility. Owing to the uneven distribution of the L1<sub>2</sub>-ordered Al<sub>3</sub>(Sc, Zr) nanoparticles, the as-printed alloy demonstrates a hierarchically heterogeneous microstructure featuring a triple-modal grain distribution. Tailored planar defects comprising stacking faults, 9R phase and nanotwins are strategically introduced in the as-printed alloy. Beyond the nano-scaled planar defects and the triple-modal grain distribution, further direct ageing process augments the abundance of nanoprecipitates, collectively boosting the yield strength to 656 MPa, which is higher than almost all L-PBFed Al alloys hitherto reported, and a decent ductility of 7.2 %. This work paves the way for the near net shape forming of high-performance Al alloy components for advanced structural applications.</p></div>\",\"PeriodicalId\":387,\"journal\":{\"name\":\"Materials Today\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":21.1000,\"publicationDate\":\"2024-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1369702124000877\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Today","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1369702124000877","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
In response to the critical need for lightweight designs and carbon neutrality, we introduce an innovative additively manufactured ultrafine-grained Al-Mg-Mn-Sc-Zr alloy reinforced with nano-structured planar defects via laser powder bed fusion (L-PBF), developed for complex-shaped parts that demand high strength and superior ductility. Owing to the uneven distribution of the L12-ordered Al3(Sc, Zr) nanoparticles, the as-printed alloy demonstrates a hierarchically heterogeneous microstructure featuring a triple-modal grain distribution. Tailored planar defects comprising stacking faults, 9R phase and nanotwins are strategically introduced in the as-printed alloy. Beyond the nano-scaled planar defects and the triple-modal grain distribution, further direct ageing process augments the abundance of nanoprecipitates, collectively boosting the yield strength to 656 MPa, which is higher than almost all L-PBFed Al alloys hitherto reported, and a decent ductility of 7.2 %. This work paves the way for the near net shape forming of high-performance Al alloy components for advanced structural applications.
期刊介绍:
Materials Today is the leading journal in the Materials Today family, focusing on the latest and most impactful work in the materials science community. With a reputation for excellence in news and reviews, the journal has now expanded its coverage to include original research and aims to be at the forefront of the field.
We welcome comprehensive articles, short communications, and review articles from established leaders in the rapidly evolving fields of materials science and related disciplines. We strive to provide authors with rigorous peer review, fast publication, and maximum exposure for their work. While we only accept the most significant manuscripts, our speedy evaluation process ensures that there are no unnecessary publication delays.