激光粉末床熔炼与单轨激光熔炼马氏体Ti-Nb：相与显微组织的形成

IF 11.1 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2025-07-05 DOI:10.1016/j.addma.2025.104884

Florian Senftleben , Mariana Calin , Jürgen Eckert , Matthias Bönisch

{"title":"激光粉末床熔炼与单轨激光熔炼马氏体Ti-Nb：相与显微组织的形成","authors":"Florian Senftleben , Mariana Calin , Jürgen Eckert , Matthias Bönisch","doi":"10.1016/j.addma.2025.104884","DOIUrl":null,"url":null,"abstract":"<div><div>The aim of this work is to explore the fabrication of α″ Ti-Nb via laser powder bed fusion (LPBF) using pre-alloyed ball-milled feedstock powders. Ti-29Nb alloy powder was prepared by mechanical alloying of elemental Ti and Nb powders, using NaCl as milling agent. Pre-alloyed powders were consolidated into bulk cuboids via LPBF and the effect of different build settings on resulting phases, microstructure and porosity was studied. Phases and microstructures of the LPBF parts were compared with those of single tracks on α″ martensitic substrates. Depending on the Nb content, LPBF leads to either planar or cellular-dendritic solidification. α′ and α″ martensites, β and α phase form in the as-built parts. Single track experiments show that planar growth is conducive for the formation of α″ martensite post-solidification. While in-situ alloying is possible for specific LPBF settings, the use of pre-alloyed powders is recommended to enlarge the build parameter space for reproducible as-built microstructures.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"109 ","pages":"Article 104884"},"PeriodicalIF":11.1000,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Laser powder bed fusion vs. single track laser melting of martensitic Ti-Nb: Phase and microstructure formation\",\"authors\":\"Florian Senftleben , Mariana Calin , Jürgen Eckert , Matthias Bönisch\",\"doi\":\"10.1016/j.addma.2025.104884\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The aim of this work is to explore the fabrication of α″ Ti-Nb via laser powder bed fusion (LPBF) using pre-alloyed ball-milled feedstock powders. Ti-29Nb alloy powder was prepared by mechanical alloying of elemental Ti and Nb powders, using NaCl as milling agent. Pre-alloyed powders were consolidated into bulk cuboids via LPBF and the effect of different build settings on resulting phases, microstructure and porosity was studied. Phases and microstructures of the LPBF parts were compared with those of single tracks on α″ martensitic substrates. Depending on the Nb content, LPBF leads to either planar or cellular-dendritic solidification. α′ and α″ martensites, β and α phase form in the as-built parts. Single track experiments show that planar growth is conducive for the formation of α″ martensite post-solidification. While in-situ alloying is possible for specific LPBF settings, the use of pre-alloyed powders is recommended to enlarge the build parameter space for reproducible as-built microstructures.</div></div>\",\"PeriodicalId\":7172,\"journal\":{\"name\":\"Additive manufacturing\",\"volume\":\"109 \",\"pages\":\"Article 104884\"},\"PeriodicalIF\":11.1000,\"publicationDate\":\"2025-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Additive manufacturing\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214860425002489\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Additive manufacturing","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214860425002489","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}

引用次数: 0

摘要

本工作的目的是探索利用预合金球磨原料粉末，通过激光粉末床熔合（LPBF）制备α″Ti-Nb。以NaCl为磨粉剂，将单质Ti和Nb粉末机械合金化制备Ti- 29nb合金粉末。通过LPBF将预合金粉末固结成块状长方体，研究了不同固结条件对产物相、显微组织和孔隙率的影响。将LPBF零件的物相和显微组织与α″马氏体基体上的单径迹零件进行了比较。根据Nb含量的不同，LPBF可导致平面凝固或细胞枝晶凝固。α′和α″马氏体，β相和α相在铸件中形成。单径迹实验表明，平面生长有利于凝固后α″马氏体的形成。虽然原位合金化可以用于特定的LPBF设置，但建议使用预合金化粉末来扩大构建参数空间，以再现构建时的微观结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Laser powder bed fusion vs. single track laser melting of martensitic Ti-Nb: Phase and microstructure formation

The aim of this work is to explore the fabrication of α″ Ti-Nb via laser powder bed fusion (LPBF) using pre-alloyed ball-milled feedstock powders. Ti-29Nb alloy powder was prepared by mechanical alloying of elemental Ti and Nb powders, using NaCl as milling agent. Pre-alloyed powders were consolidated into bulk cuboids via LPBF and the effect of different build settings on resulting phases, microstructure and porosity was studied. Phases and microstructures of the LPBF parts were compared with those of single tracks on α″ martensitic substrates. Depending on the Nb content, LPBF leads to either planar or cellular-dendritic solidification. α′ and α″ martensites, β and α phase form in the as-built parts. Single track experiments show that planar growth is conducive for the formation of α″ martensite post-solidification. While in-situ alloying is possible for specific LPBF settings, the use of pre-alloyed powders is recommended to enlarge the build parameter space for reproducible as-built microstructures.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.