Self-healing of damage inside metals triggered by electropulsing stimuli

Abstract The microscopic defects that distributed randomly in metals are not only hard to detect, but also may inevitably cause catastrophic failure. Thus, autonomic probing and healing for damage inside metals continue to be a challenging. Here we show a novel approach for self-healing using electr...

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Autores principales:	Hui Song, Zhong-jin Wang, Xiao-dong He, Jie Duan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9bb7db00b5ca40b2bf6fe20e983777b5
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spelling	oai:doaj.org-article:9bb7db00b5ca40b2bf6fe20e983777b52021-12-02T11:40:31ZSelf-healing of damage inside metals triggered by electropulsing stimuli10.1038/s41598-017-06635-92045-2322https://doaj.org/article/9bb7db00b5ca40b2bf6fe20e983777b52017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06635-9https://doaj.org/toc/2045-2322Abstract The microscopic defects that distributed randomly in metals are not only hard to detect, but also may inevitably cause catastrophic failure. Thus, autonomic probing and healing for damage inside metals continue to be a challenging. Here we show a novel approach for self-healing using electropulsing as a stimulus to trigger repairing of damaged metals. This is achieved via a process that through expelling absolutely currents, the microcrack causes them to be redistributed to form a concentrated and a diluted region around it, thereby inducing an extremely high temperature gradient and a large compressive stress, which drive material flow to close microcracks. Simultaneously, a large enough heat for bonding atoms was produced. That is, the microcrack as an empty cavity can be regarded as a special micro-device to shape a localized microscopic energy field, which in turn activates a healing process. The microstructure and mechanical property verified the extrinsic self-healing of a titanium alloy. The process is performed on a short timescale, is enable to detect automatically and act directly on the internal defects in metals, and to heal damage without any healing agent, long time heating as well as applied high pressure, offering unique advantages over conventional healing approaches.Hui SongZhong-jin WangXiao-dong HeJie DuanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hui Song Zhong-jin Wang Xiao-dong He Jie Duan Self-healing of damage inside metals triggered by electropulsing stimuli
description	Abstract The microscopic defects that distributed randomly in metals are not only hard to detect, but also may inevitably cause catastrophic failure. Thus, autonomic probing and healing for damage inside metals continue to be a challenging. Here we show a novel approach for self-healing using electropulsing as a stimulus to trigger repairing of damaged metals. This is achieved via a process that through expelling absolutely currents, the microcrack causes them to be redistributed to form a concentrated and a diluted region around it, thereby inducing an extremely high temperature gradient and a large compressive stress, which drive material flow to close microcracks. Simultaneously, a large enough heat for bonding atoms was produced. That is, the microcrack as an empty cavity can be regarded as a special micro-device to shape a localized microscopic energy field, which in turn activates a healing process. The microstructure and mechanical property verified the extrinsic self-healing of a titanium alloy. The process is performed on a short timescale, is enable to detect automatically and act directly on the internal defects in metals, and to heal damage without any healing agent, long time heating as well as applied high pressure, offering unique advantages over conventional healing approaches.
format	article
author	Hui Song Zhong-jin Wang Xiao-dong He Jie Duan
author_facet	Hui Song Zhong-jin Wang Xiao-dong He Jie Duan
author_sort	Hui Song
title	Self-healing of damage inside metals triggered by electropulsing stimuli
title_short	Self-healing of damage inside metals triggered by electropulsing stimuli
title_full	Self-healing of damage inside metals triggered by electropulsing stimuli
title_fullStr	Self-healing of damage inside metals triggered by electropulsing stimuli
title_full_unstemmed	Self-healing of damage inside metals triggered by electropulsing stimuli
title_sort	self-healing of damage inside metals triggered by electropulsing stimuli
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9bb7db00b5ca40b2bf6fe20e983777b5
work_keys_str_mv	AT huisong selfhealingofdamageinsidemetalstriggeredbyelectropulsingstimuli AT zhongjinwang selfhealingofdamageinsidemetalstriggeredbyelectropulsingstimuli AT xiaodonghe selfhealingofdamageinsidemetalstriggeredbyelectropulsingstimuli AT jieduan selfhealingofdamageinsidemetalstriggeredbyelectropulsingstimuli
_version_	1718395596638781440

Self-healing of damage inside metals triggered by electropulsing stimuli

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