Jia-qi ZHANG , Chao CHEN , Dan LI , Zhao-wen GENG , Peng PAN , Guo-hua WANG , Ke-chao ZHOU , Jian-ling LIU
{"title":"能量密度对激光粉末床熔合Ta−33Ti合金组织和力学性能的影响","authors":"Jia-qi ZHANG , Chao CHEN , Dan LI , Zhao-wen GENG , Peng PAN , Guo-hua WANG , Ke-chao ZHOU , Jian-ling LIU","doi":"10.1016/S1003-6326(24)66648-3","DOIUrl":null,"url":null,"abstract":"<div><div>The influence of laser process parameters on the densification, phase composition, microstructure, and mechanical properties of Ta−33wt.%Ti alloy prepared via laser powder bed fusion (LPBF) was investigated. The results show that fully dense and homogeneous Ta−Ti parts can be obtained from LPBF with appropriate energy input. The cellular and dendritic structures were formed due to constitutional undercooling. Transmission electron microscopy (TEM) analysis showed that the lamellar <em>α″</em> phase within the cellular structures preferred to concentrate at the cellular boundaries owing to the elemental micro-segregation in the solidification front. The samples fabricated under the energy density of 166.7 J/mm<sup>3</sup> had a favorable ultimate tensile strength of 806 MPa and an excellent Young's modulus of 36.7 GPa.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 3919-3934"},"PeriodicalIF":4.7000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of energy density on microstructure and mechanical properties of Ta−33Ti alloy prepared via laser powder bed fusion\",\"authors\":\"Jia-qi ZHANG , Chao CHEN , Dan LI , Zhao-wen GENG , Peng PAN , Guo-hua WANG , Ke-chao ZHOU , Jian-ling LIU\",\"doi\":\"10.1016/S1003-6326(24)66648-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The influence of laser process parameters on the densification, phase composition, microstructure, and mechanical properties of Ta−33wt.%Ti alloy prepared via laser powder bed fusion (LPBF) was investigated. The results show that fully dense and homogeneous Ta−Ti parts can be obtained from LPBF with appropriate energy input. The cellular and dendritic structures were formed due to constitutional undercooling. Transmission electron microscopy (TEM) analysis showed that the lamellar <em>α″</em> phase within the cellular structures preferred to concentrate at the cellular boundaries owing to the elemental micro-segregation in the solidification front. The samples fabricated under the energy density of 166.7 J/mm<sup>3</sup> had a favorable ultimate tensile strength of 806 MPa and an excellent Young's modulus of 36.7 GPa.</div></div>\",\"PeriodicalId\":23191,\"journal\":{\"name\":\"Transactions of Nonferrous Metals Society of China\",\"volume\":\"34 12\",\"pages\":\"Pages 3919-3934\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions of Nonferrous Metals Society of China\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1003632624666483\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/13 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of Nonferrous Metals Society of China","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1003632624666483","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/13 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Effect of energy density on microstructure and mechanical properties of Ta−33Ti alloy prepared via laser powder bed fusion
The influence of laser process parameters on the densification, phase composition, microstructure, and mechanical properties of Ta−33wt.%Ti alloy prepared via laser powder bed fusion (LPBF) was investigated. The results show that fully dense and homogeneous Ta−Ti parts can be obtained from LPBF with appropriate energy input. The cellular and dendritic structures were formed due to constitutional undercooling. Transmission electron microscopy (TEM) analysis showed that the lamellar α″ phase within the cellular structures preferred to concentrate at the cellular boundaries owing to the elemental micro-segregation in the solidification front. The samples fabricated under the energy density of 166.7 J/mm3 had a favorable ultimate tensile strength of 806 MPa and an excellent Young's modulus of 36.7 GPa.
期刊介绍：
The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.
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