The Structure and Mechanical Properties of VT23 Welded Joints with Surface Layer Modified by Ultrasonic Mechanical Forging; Key Engineering Materials; Vol. 743 : High Technology: Research and Applications (HTRA 2016)

Détails bibliographiques
Parent link:Key Engineering Materials: Scientific Journal
Vol. 743 : High Technology: Research and Applications (HTRA 2016).— 2017.— [P. 264-268]
Collectivité auteur: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра материаловедения в машиностроении (ММС)
Autres auteurs: Smirnova A. Anastasia, Pochivalov Yu. Yury, Panin V. E. Viktor Evgenyevich, Orishich A. Anatoly, Malikov Aleksandr A., Fomin V. Vasily, Gorbunov A. Anton
Résumé:Title screen
The structure and mechanical properties of welded joints of VT23 titanium alloy received by method of laser welding after modifying the surface layers by ultrasonic mechanical forging (Treatment 1 and Treatment 2) were investigated. The experimental tests have revealed that the Treatment 2 provides a multiple increase in the relaxation property in fatigue life test. The formation of nonuniform distribution of vanadium, chromium and molybdenum in the welded joint increases the strength and, at the same time, the brittleness of [beta]-phase. Mechanical treatment of the surface layers in the second mode provides a multiple increase in ductility up to 13%, in the as-received condition up to 9.9%. In consequence of plastic deformation, the [beta]-phase intensity reduces twice with Treatment 2 which is related to its clustering. As follows from a presented data, the fatigue life of the VT23 titanium alloy has increased more than threefold.
Режим доступа: по договору с организацией-держателем ресурса
Langue:anglais
Publié: 2017
Sujets:
Accès en ligne:http://dx.doi.org/10.4028/www.scientific.net/KEM.743.264
Format: Électronique Chapitre de livre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655469

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200 1 |a The Structure and Mechanical Properties of VT23 Welded Joints with Surface Layer Modified by Ultrasonic Mechanical Forging  |f A. Smirnova [et al.] 
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300 |a Title screen 
330 |a The structure and mechanical properties of welded joints of VT23 titanium alloy received by method of laser welding after modifying the surface layers by ultrasonic mechanical forging (Treatment 1 and Treatment 2) were investigated. The experimental tests have revealed that the Treatment 2 provides a multiple increase in the relaxation property in fatigue life test. The formation of nonuniform distribution of vanadium, chromium and molybdenum in the welded joint increases the strength and, at the same time, the brittleness of [beta]-phase. Mechanical treatment of the surface layers in the second mode provides a multiple increase in ductility up to 13%, in the as-received condition up to 9.9%. In consequence of plastic deformation, the [beta]-phase intensity reduces twice with Treatment 2 which is related to its clustering. As follows from a presented data, the fatigue life of the VT23 titanium alloy has increased more than threefold. 
333 |a Режим доступа: по договору с организацией-держателем ресурса 
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