Cargando…
Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy
Due to the low thermal stability of crystallographic boundaries, the grain boundary engineering (GBE) manifests some limits to the fineness and types of microstructures achievable, while unique chemical boundary engineering (CBE) enables us to create a metallic material with an ultrafine hierarchica...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550820/ https://www.ncbi.nlm.nih.gov/pubmed/36216815 http://dx.doi.org/10.1038/s41467-022-33710-1 |
_version_ | 1784805968115138560 |
---|---|
author | Zhang, Chongle Bao, Xiangyun Hao, Mengyuan Chen, Wei Zhang, Dongdong Wang, Dong Zhang, Jinyu Liu, Gang Sun, Jun |
author_facet | Zhang, Chongle Bao, Xiangyun Hao, Mengyuan Chen, Wei Zhang, Dongdong Wang, Dong Zhang, Jinyu Liu, Gang Sun, Jun |
author_sort | Zhang, Chongle |
collection | PubMed |
description | Due to the low thermal stability of crystallographic boundaries, the grain boundary engineering (GBE) manifests some limits to the fineness and types of microstructures achievable, while unique chemical boundary engineering (CBE) enables us to create a metallic material with an ultrafine hierarchically heterogeneous microstructure for enhancing the mechanical properties of materials. Here, using a low cost metastable Ti-2.8Cr-4.5Zr-5.2Al (wt.%) alloy as a model material, we create a high density of chemical boundaries (CBs) through the significant diffusion mismatch between Cr and Al alloying elements to architecture hierarchical nano-martensites with an average thickness of ~20 nm. For this metastable titanium alloy, the significantly enhanced yield strength originates from dense nano-martensitic interface strengthening, meanwhile the large ductility is attributed to the multi-stage strain hardening of hierarchical 3D α'/β lamellae assisted by equiaxed primary α (α(p)) nodules. The hierarchical nano-martensite engineering strategy confers our alloy a desired combination of strength and ductility, which can potentially be applied to many transformable alloys, and reveal a new target in microstructural design for ultrastrong-yet-ductile structural materials. |
format | Online Article Text |
id | pubmed-9550820 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-95508202022-10-12 Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy Zhang, Chongle Bao, Xiangyun Hao, Mengyuan Chen, Wei Zhang, Dongdong Wang, Dong Zhang, Jinyu Liu, Gang Sun, Jun Nat Commun Article Due to the low thermal stability of crystallographic boundaries, the grain boundary engineering (GBE) manifests some limits to the fineness and types of microstructures achievable, while unique chemical boundary engineering (CBE) enables us to create a metallic material with an ultrafine hierarchically heterogeneous microstructure for enhancing the mechanical properties of materials. Here, using a low cost metastable Ti-2.8Cr-4.5Zr-5.2Al (wt.%) alloy as a model material, we create a high density of chemical boundaries (CBs) through the significant diffusion mismatch between Cr and Al alloying elements to architecture hierarchical nano-martensites with an average thickness of ~20 nm. For this metastable titanium alloy, the significantly enhanced yield strength originates from dense nano-martensitic interface strengthening, meanwhile the large ductility is attributed to the multi-stage strain hardening of hierarchical 3D α'/β lamellae assisted by equiaxed primary α (α(p)) nodules. The hierarchical nano-martensite engineering strategy confers our alloy a desired combination of strength and ductility, which can potentially be applied to many transformable alloys, and reveal a new target in microstructural design for ultrastrong-yet-ductile structural materials. Nature Publishing Group UK 2022-10-10 /pmc/articles/PMC9550820/ /pubmed/36216815 http://dx.doi.org/10.1038/s41467-022-33710-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Zhang, Chongle Bao, Xiangyun Hao, Mengyuan Chen, Wei Zhang, Dongdong Wang, Dong Zhang, Jinyu Liu, Gang Sun, Jun Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title | Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title_full | Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title_fullStr | Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title_full_unstemmed | Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title_short | Hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
title_sort | hierarchical nano-martensite-engineered a low-cost ultra-strong and ductile titanium alloy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550820/ https://www.ncbi.nlm.nih.gov/pubmed/36216815 http://dx.doi.org/10.1038/s41467-022-33710-1 |
work_keys_str_mv | AT zhangchongle hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT baoxiangyun hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT haomengyuan hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT chenwei hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT zhangdongdong hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT wangdong hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT zhangjinyu hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT liugang hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy AT sunjun hierarchicalnanomartensiteengineeredalowcostultrastrongandductiletitaniumalloy |