Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures

The areas of the GaP (111) plane placed between the scratches parallel to [110] have been investigated. The deformation degree of these areas was varied by distance between scratches (60-180 µm) and scratching temperature (T = 20, 150, and 450°C). It was obtained that the microhardness value (H)...

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Autores principales:	Jitaru, Raisa, Rahvalov, Veaceslav
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2008
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/c25af114dcc74cd1acd6a058d8b32b89
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spelling	oai:doaj.org-article:c25af114dcc74cd1acd6a058d8b32b892021-11-21T12:07:41ZInfluence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures 2537-63651810-648Xhttps://doaj.org/article/c25af114dcc74cd1acd6a058d8b32b892008-02-01T00:00:00Zhttps://mjps.nanotech.md/archive/2008/article/3783https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The areas of the GaP (111) plane placed between the scratches parallel to [110] have been investigated. The deformation degree of these areas was varied by distance between scratches (60-180 µm) and scratching temperature (T = 20, 150, and 450°C). It was obtained that the microhardness value (H) is smaller and the acoustic emission (AE) is more intensive for the areas with higher stress state. It was established that rest (~500 h) resulted in the AE significant increase for complete cycle of microindentation and emission in unloading. It was shown that the active formation of cracks and, especially, a material break off around the indents under microindentation of the investigated GaP zones have been observed while the AE increase; however, the H value in this case changed weakly. Obviously, after rest the revealed deformation acts differently influence the AE and microhardness changes. The essential changes of the relaxation coefficient (K) dependence on deformation degree as a result of rest have been revealed: K linearly increases with deformation degree increase before rest and monotonically decreases after rest. Jitaru, RaisaRahvalov, VeaceslavD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 7, Iss 1, Pp 64-71 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Jitaru, Raisa Rahvalov, Veaceslav Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
description	The areas of the GaP (111) plane placed between the scratches parallel to [110] have been investigated. The deformation degree of these areas was varied by distance between scratches (60-180 µm) and scratching temperature (T = 20, 150, and 450°C). It was obtained that the microhardness value (H) is smaller and the acoustic emission (AE) is more intensive for the areas with higher stress state. It was established that rest (~500 h) resulted in the AE significant increase for complete cycle of microindentation and emission in unloading. It was shown that the active formation of cracks and, especially, a material break off around the indents under microindentation of the investigated GaP zones have been observed while the AE increase; however, the H value in this case changed weakly. Obviously, after rest the revealed deformation acts differently influence the AE and microhardness changes. The essential changes of the relaxation coefficient (K) dependence on deformation degree as a result of rest have been revealed: K linearly increases with deformation degree increase before rest and monotonically decreases after rest.
format	article
author	Jitaru, Raisa Rahvalov, Veaceslav
author_facet	Jitaru, Raisa Rahvalov, Veaceslav
author_sort	Jitaru, Raisa
title	Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
title_short	Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
title_full	Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
title_fullStr	Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
title_full_unstemmed	Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures
title_sort	influence of rest on mechanical properties of gap single crystals deformed by scleroscopic method at different temperatures
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2008
url	https://doaj.org/article/c25af114dcc74cd1acd6a058d8b32b89
work_keys_str_mv	AT jitaruraisa influenceofrestonmechanicalpropertiesofgapsinglecrystalsdeformedbyscleroscopicmethodatdifferenttemperatures AT rahvalovveaceslav influenceofrestonmechanicalpropertiesofgapsinglecrystalsdeformedbyscleroscopicmethodatdifferenttemperatures
_version_	1718419210863902720

Influence of rest on mechanical properties of GaP single crystals deformed by scleroscopic method at different temperatures

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