Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods

Microstructural changes in grade 2 titanium generated by surface mechanical attrition treatment (SMAT) were studied using positron annihilation lifetime spectroscopy and complementary methods. A significant increase in the mean positron lifetime indicated many lattice defects introduced by SMAT. Two...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Konrad Skowron, Mirosław Wróbel, Michał Mosiałek, Léa Le Joncour, Ewa Dryzek
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	titanium surface mechanical attrition treatment SMAT gradient structured materials positron annihilation spectroscopy corrosion Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/2dbde30081ff4dde9d371fb1e8e786e6
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2dbde30081ff4dde9d371fb1e8e786e6
record_format	dspace
spelling	oai:doaj.org-article:2dbde30081ff4dde9d371fb1e8e786e62021-11-11T17:55:03ZGradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods10.3390/ma142163471996-1944https://doaj.org/article/2dbde30081ff4dde9d371fb1e8e786e62021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6347https://doaj.org/toc/1996-1944Microstructural changes in grade 2 titanium generated by surface mechanical attrition treatment (SMAT) were studied using positron annihilation lifetime spectroscopy and complementary methods. A significant increase in the mean positron lifetime indicated many lattice defects introduced by SMAT. Two positron lifetime components were resolved in the positron lifetime spectra measured. The longer lifetime revealed the presence of vacancy clusters containing about 3 or 4 vacancies, while the shorter one was attributed to the annihilation of positrons trapped at dislocations. The changes of the positron lifetime indicated a decreasing dislocation density and the presence of a deeper layer with a higher concentration of vacancy clusters at the distance from the treated surface for which the microhardness approached the value for the strain-free matrix. Electrochemical impedance spectroscopy showed the positive effect of SMAT on the corrosion resistance of the titanium studied in a saline environment also after removal of the original oxide layer that was formed during the SMAT.Konrad SkowronMirosław WróbelMichał MosiałekLéa Le JoncourEwa DryzekMDPI AGarticletitaniumsurface mechanical attrition treatmentSMATgradient structured materialspositron annihilation spectroscopycorrosionTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6347, p 6347 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	titanium surface mechanical attrition treatment SMAT gradient structured materials positron annihilation spectroscopy corrosion Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	titanium surface mechanical attrition treatment SMAT gradient structured materials positron annihilation spectroscopy corrosion Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Konrad Skowron Mirosław Wróbel Michał Mosiałek Léa Le Joncour Ewa Dryzek Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
description	Microstructural changes in grade 2 titanium generated by surface mechanical attrition treatment (SMAT) were studied using positron annihilation lifetime spectroscopy and complementary methods. A significant increase in the mean positron lifetime indicated many lattice defects introduced by SMAT. Two positron lifetime components were resolved in the positron lifetime spectra measured. The longer lifetime revealed the presence of vacancy clusters containing about 3 or 4 vacancies, while the shorter one was attributed to the annihilation of positrons trapped at dislocations. The changes of the positron lifetime indicated a decreasing dislocation density and the presence of a deeper layer with a higher concentration of vacancy clusters at the distance from the treated surface for which the microhardness approached the value for the strain-free matrix. Electrochemical impedance spectroscopy showed the positive effect of SMAT on the corrosion resistance of the titanium studied in a saline environment also after removal of the original oxide layer that was formed during the SMAT.
format	article
author	Konrad Skowron Mirosław Wróbel Michał Mosiałek Léa Le Joncour Ewa Dryzek
author_facet	Konrad Skowron Mirosław Wróbel Michał Mosiałek Léa Le Joncour Ewa Dryzek
author_sort	Konrad Skowron
title	Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
title_short	Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
title_full	Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
title_fullStr	Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
title_full_unstemmed	Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods
title_sort	gradient microstructure induced by surface mechanical attrition treatment in grade 2 titanium studied using positron annihilation spectroscopy and complementary methods
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2dbde30081ff4dde9d371fb1e8e786e6
work_keys_str_mv	AT konradskowron gradientmicrostructureinducedbysurfacemechanicalattritiontreatmentingrade2titaniumstudiedusingpositronannihilationspectroscopyandcomplementarymethods AT mirosławwrobel gradientmicrostructureinducedbysurfacemechanicalattritiontreatmentingrade2titaniumstudiedusingpositronannihilationspectroscopyandcomplementarymethods AT michałmosiałek gradientmicrostructureinducedbysurfacemechanicalattritiontreatmentingrade2titaniumstudiedusingpositronannihilationspectroscopyandcomplementarymethods AT lealejoncour gradientmicrostructureinducedbysurfacemechanicalattritiontreatmentingrade2titaniumstudiedusingpositronannihilationspectroscopyandcomplementarymethods AT ewadryzek gradientmicrostructureinducedbysurfacemechanicalattritiontreatmentingrade2titaniumstudiedusingpositronannihilationspectroscopyandcomplementarymethods
_version_	1718431934151917568

Gradient Microstructure Induced by Surface Mechanical Attrition Treatment in Grade 2 Titanium Studied Using Positron Annihilation Spectroscopy and Complementary Methods

Ejemplares similares