dc.contributor.author | Wang, Leyun | |
dc.contributor.author | Song, Zhe | |
dc.contributor.author | Zhang, Xuan | |
dc.contributor.author | Park, Jun-Sang | |
dc.contributor.author | Almer, Jonathan | |
dc.contributor.author | Zhu, Gaoming | |
dc.contributor.author | Chen, Yiwen | |
dc.contributor.author | Li, Quan | |
dc.contributor.author | Zeng, Xiaoqin | |
dc.contributor.author | Li, Yanjun | |
dc.date.accessioned | 2023-03-02T09:50:14Z | |
dc.date.available | 2023-03-02T09:50:14Z | |
dc.date.created | 2022-04-25T14:10:12Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Additive Manufacturing. 2022, 52 . | en_US |
dc.identifier.issn | 2214-8604 | |
dc.identifier.uri | https://hdl.handle.net/11250/3055226 | |
dc.description.abstract | Laser powder bed fusion (LPBF) is an advanced technology to create metallic components with complex geometry. Ti-6Al-4V (Ti64) is one of the most frequently used materials for LPBF. The intrinsic high cooling rates and ultra-high directional thermal gradient of melt, however, lead to a hierarchical structure composed of fine martensitic α' within columnar prior-β grains in LPBF Ti64. This microstructure results in poor ductility and strong mechanical anisotropy in as-built Ti64 components, which largely limit their applications. Here, we report that the above shortcomings can be overcome by tailoring the alloy composition. Specifically, by reducing the aluminum content from 6 wt% to 4 wt%, the resultant LPBF Ti-4Al-4V (Ti44) alloy exhibits substantially improved ductility and mechanical isotropy. These improvements are attributed to grain refinement during solidification and the activation of multiple slip modes and twinning in the as-built material during deformation. This work offers a simple strategy to design new titanium alloys for LPBF with significantly improved ductility and isotropy. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.title | Developing ductile and isotropic Ti alloy with tailored composition for laser powder bed fusion | en_US |
dc.title.alternative | Developing ductile and isotropic Ti alloy with tailored composition for laser powder bed fusion | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | This version will not be available due to the publisher's copyright. | en_US |
dc.source.pagenumber | 0 | en_US |
dc.source.volume | 52 | en_US |
dc.source.journal | Additive Manufacturing | en_US |
dc.identifier.doi | 10.1016/j.addma.2022.102656 | |
dc.identifier.cristin | 2018944 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |