Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel

Austenitic stainless steels are prominent materials for their superior corrosion resistance and a combination of strength and ductility. However, the relatively low yield strength limits its application in high strength structural applications. Cryorolling is one of the promising methods of enhancin...

Descripción completa

Detalles Bibliográficos
Autores principales: Kumar, G. Venkata Sarath, Mangipudi, K. R., Sastry, G. V. S., Singh, Lalit Kumar, Dhanasekaran, S., Sivaprasad, K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962382/
https://www.ncbi.nlm.nih.gov/pubmed/31941948
http://dx.doi.org/10.1038/s41598-019-57208-x
_version_ 1783488154139885568
author Kumar, G. Venkata Sarath
Mangipudi, K. R.
Sastry, G. V. S.
Singh, Lalit Kumar
Dhanasekaran, S.
Sivaprasad, K.
author_facet Kumar, G. Venkata Sarath
Mangipudi, K. R.
Sastry, G. V. S.
Singh, Lalit Kumar
Dhanasekaran, S.
Sivaprasad, K.
author_sort Kumar, G. Venkata Sarath
collection PubMed
description Austenitic stainless steels are prominent materials for their superior corrosion resistance and a combination of strength and ductility. However, the relatively low yield strength limits its application in high strength structural applications. Cryorolling is one of the promising methods of enhancing the mechanical properties of sheet metals. In the present work, Cryorolling of UNS S31000 stainless steel resulted in five-fold enhancement in yield strength with a significant loss in ductility. However, flash annealing at 800 °C for 120 s could restore its ductility up to 50% of its original ductility. The enhancement in strength is attributed to the formation of deformation nano-twins during flash annealing along with a bimodal grain structure.
format Online
Article
Text
id pubmed-6962382
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-69623822020-01-23 Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel Kumar, G. Venkata Sarath Mangipudi, K. R. Sastry, G. V. S. Singh, Lalit Kumar Dhanasekaran, S. Sivaprasad, K. Sci Rep Article Austenitic stainless steels are prominent materials for their superior corrosion resistance and a combination of strength and ductility. However, the relatively low yield strength limits its application in high strength structural applications. Cryorolling is one of the promising methods of enhancing the mechanical properties of sheet metals. In the present work, Cryorolling of UNS S31000 stainless steel resulted in five-fold enhancement in yield strength with a significant loss in ductility. However, flash annealing at 800 °C for 120 s could restore its ductility up to 50% of its original ductility. The enhancement in strength is attributed to the formation of deformation nano-twins during flash annealing along with a bimodal grain structure. Nature Publishing Group UK 2020-01-15 /pmc/articles/PMC6962382/ /pubmed/31941948 http://dx.doi.org/10.1038/s41598-019-57208-x Text en © The Author(s) 2020 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/.
spellingShingle Article
Kumar, G. Venkata Sarath
Mangipudi, K. R.
Sastry, G. V. S.
Singh, Lalit Kumar
Dhanasekaran, S.
Sivaprasad, K.
Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title_full Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title_fullStr Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title_full_unstemmed Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title_short Excellent Combination of Tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
title_sort excellent combination of tensile ductility and strength due to nanotwinning and a biamodal structure in cryorolled austenitic stainless steel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962382/
https://www.ncbi.nlm.nih.gov/pubmed/31941948
http://dx.doi.org/10.1038/s41598-019-57208-x
work_keys_str_mv AT kumargvenkatasarath excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel
AT mangipudikr excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel
AT sastrygvs excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel
AT singhlalitkumar excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel
AT dhanasekarans excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel
AT sivaprasadk excellentcombinationoftensileductilityandstrengthduetonanotwinningandabiamodalstructureincryorolledausteniticstainlesssteel

Ejemplares similares