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181 0 _ai
182 0 _ab
200 1 _aImpact of Modulated Current Welding on Structural-Phase State of 0.12 C-18Cr-10Ni-1 Ti-Fe Austenitic Steel
_fA. Smirnov [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 22 tit.]
330 _aThe structural-phase state of the heat-affected zone of a weld produced by modulated current (fine-droplet transfer) on 0.12 C-18Cr-10Ni-1Ti-Fe austenitic steel was studied by transmission diffraction electron microscopy method on thin foils. Welding modes: amperage and pulse time - 75 А, 0.15 sec., amperage and pause time - 15 А, 0.45 sec, average while-welding amperage - 42 A. The studies were carried out in a heat-affected zone at a 1 mm distance from the fusion line in the base metal's direction - base metal's zone; and the one at a distance of 0.5 mm in the deposited metal's direction - the deposited metal's zone. It was discovered that before welding the steel matrix is a [gamma]- phase (austenite) having a face-centered cubic crystal lattice. Morphologically the steel structure is represented by the grains, a defective structure of which is only formed by a grid dislocation substructure, and the grains which host mechanical (or deformation) micro-twins in the form of packages of one, two or three systems along with the dislocation substructure. Micro-twins possess a crystal lattice and such parameter as [gamma]-phase. The micro-twins' allocation occurs along the {111} [gamma]-phase planes. It was found out that welding in the base metal's zone leads to [epsilon]-martensite formation both in the base (welded) and in the deposited (weld) metals. Moreover, [gamma]->[epsilon] phase transformation in the weld metal's zone is more intense and takes place in all [gamma]-phase grains.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 0 _0(RuTPU)RU\TPU\network\4816
_tAIP Conference Proceedings
463 0 _0(RuTPU)RU\TPU\network\31884
_tVol. 2167 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 (AMHS'19)
_oProceedings of the International Conference, 1–5 October 2019, Tomsk, Russia
_fNational Research Tomsk Polytechnic University (TPU) ; Institute of Strength Physics and Materials Science SB RAS (Russia) ; eds. V. E. Panin ; S. G. Psakhie ; V. M. Fomin
_v[020340, 5 p.]
_d2019
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aсварка
610 1 _aструктурно-фазовые состояния
610 1 _aаустенитные стали
610 1 _aсварные швы
610 1 _aмодулированные токи
610 1 _aпросвечивающая электронная микроскопия
610 1 _aтермические воздействия
701 1 _aSmirnov
_bA.
701 1 _aPopova
_bN.
701 1 _aNikonenko
_bE. L.
_cphysicist
_cAssociate Professor of Tomsk Polytechnic University, candidate of physical and mathematical sciences
_f1962-
_gElena Leonidovna
_2stltpush
_3(RuTPU)RU\TPU\pers\35823
701 1 _aAbabkov
_bN.
701 1 _aKnyazkov
_bK.
701 1 _aKoneva
_bN.
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bШкола базовой инженерной подготовки
_bОтделение русского языка
_h8030
_2stltpush
_3(RuTPU)RU\TPU\col\23517
801 2 _aRU
_b63413507
_c20200113
_gRCR
856 4 _uhttps://doi.org/10.1063/1.5132207
942 _cCF