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Residual elastic stress and texture evolution in the surface layer of a Ti-6Al-4 V alloy induced by pulsed radially converging low-energy high-current electron beams.

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Titel: Residual elastic stress and texture evolution in the surface layer of a Ti-6Al-4 V alloy induced by pulsed radially converging low-energy high-current electron beams.
Autoren: Meisner, L. L.1 (AUTHOR) llm@ispms.ru, D'yachenko, F. A.1 (AUTHOR), Ostapenko, M. G.1 (AUTHOR), Meisner, S. N.1 (AUTHOR), Semin, V. O.1 (AUTHOR), Ozur, G. E.2 (AUTHOR), Kiziridi, P. P.2 (AUTHOR), Naimark, O. B.3 (AUTHOR), Oborin, V. A.3 (AUTHOR), Balakhnin, A. N.3 (AUTHOR)
Quelle: Journal of Materials Science. Dec2025, Vol. 60 Issue 47, p24541-24565. 25p.
Schlagwörter: *RESIDUAL stresses, *CRYSTAL texture, *ELECTRON beams, *HARDNESS, *DISLOCATIONS in crystals, *COATING processes, *TITANIUM alloys
Abstract: This paper presents the results of investigations into the structure, crystallographic texture and residual stresses of Ti-6Al-4 V alloy samples before and after treatment with a low-energy, high-current electron beam in pulse melting mode and radially convergent geometry. Research shows that this type of electron-beam treatment prevents the formation of a columnar structure in the surface layer that solidifies rapidly. Consequently, its hardness does not increase. It has been established that the residual stresses of the first kind in the α-Ti phase are heterogeneously distributed over the surface of the irradiated sample and are dependent on the crystallographic orientation of the surface α-grains. The α-grains forming the basic texture are the most elastically stressed, and the α-grains forming the prismatic texture are the least elastically stressed. The residual stress level of α-grains forming a pyramidal texture occupies an intermediate position between the first two types of grains. A proposed explanation for these differences is based on crystallographic ideas about the slip systems in the hcp-structure of the α-Ti phase. [ABSTRACT FROM AUTHOR]
Datenbank: Academic Search Index
Beschreibung
Abstract:This paper presents the results of investigations into the structure, crystallographic texture and residual stresses of Ti-6Al-4 V alloy samples before and after treatment with a low-energy, high-current electron beam in pulse melting mode and radially convergent geometry. Research shows that this type of electron-beam treatment prevents the formation of a columnar structure in the surface layer that solidifies rapidly. Consequently, its hardness does not increase. It has been established that the residual stresses of the first kind in the α-Ti phase are heterogeneously distributed over the surface of the irradiated sample and are dependent on the crystallographic orientation of the surface α-grains. The α-grains forming the basic texture are the most elastically stressed, and the α-grains forming the prismatic texture are the least elastically stressed. The residual stress level of α-grains forming a pyramidal texture occupies an intermediate position between the first two types of grains. A proposed explanation for these differences is based on crystallographic ideas about the slip systems in the hcp-structure of the α-Ti phase. [ABSTRACT FROM AUTHOR]
ISSN:00222461
DOI:10.1007/s10853-025-11782-w