Role of local nanostructural states in plastic deformation and fracture of solids

Panin, V. E.; Егорушкин, В. Е.; Panin, A. V.

doi:10.1134/s1029959912010018

Cited by 16 publications

(11 citation statements)

References 19 publications

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“…One of the most promising ways of producing highstrength material types of joints is laser welding, which is characterized by a number of advantages. They are the formation of a narrow welded joint and a quite smaller heat-affected zone [1,2]. However, there is also a problem of obtaining high-quality welded joints of titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

The structure and mechanical properties of VT23 laser-welded joints

Смирнова¹,

Panin²,

Pochivalov³

et al. 2016

AIP Conference Proceedings

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Abstract. The structure and mechanical properties of welded joints the of VT23 titanium alloy produced by laser welding with subsequent thermomechanical treatment (TMP1 and TMP2) including ultrasonic mechanical forging are investigated. The results have shown that the fatigue life of welded joints in TMP2 multiply increases compared with the fatigue life of the welded connection samples in the delivery. The structure of a welded joint formed by laser welding has a gradient highly non-equilibrium coarse-grained structure based on the -phase. The structure with defect density monotonically decreases with the increasing distance from the surface into the material. As follows from the presented data, the fatigue life of the VT23 titanium alloy has increased more than threefold.

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Section: Introductionmentioning

confidence: 99%

The structure and mechanical properties of VT23 laser-welded joints

Смирнова¹,

Panin²,

Pochivalov³

et al. 2016

AIP Conference Proceedings

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“…In doing so, wear particles are mesovortexes of deformation and deterioration in near-surface friction layers. It is necessary to block mesovortexes initiation for wear rate reduction [1]. As a result, the surface layer strength can be increased by the deceleration of wear particle formation process, i.e.…”

Section: Introductionmentioning

confidence: 99%

Wear resistance of steels under conditions of dry sliding friction and electric current of high density

Fadin¹,

Aleutdinova²,

Колубаев³

et al. 2014

AIP Conference Proceedings

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Abstract. The dependence of current density on the conductivity and the wear rate for the electric contact steel/steel 45 under conditions of dry sliding friction at current density higher 100 А/cm 2 has been presented. It has been determined that the increase in the content of alloying elements or reinforcing phase in the initial structure of the steel leads to lower strength of the surface layer, resulting in a high wear rate of contact and catastrophic wear at a low current density. It has been noted that the rapid destruction of the surface layer of alloy steels is caused by their low plasticity limits. The high values of wear resistance of non-alloyed steel at friction with current collection are due to the instability to the rotary and shear deformation, as well as to the formation of a viscous fluid on the sliding surface.

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“…Such nanostructured surface layers are not coatings yet, but no longer can be called as ion-implanted ones. Study of influence of such layers on fatigue life-time of structural steels is of particular interest due to the possibility of simultaneously improve the fatigue durability and wear resistance [9][10][11]. To study the influence of surface layer DOI 10.12776 nanostructuring of 12Cr1MoV and 30CrMnSiNi2 steels by Zr+ ions on the fatigue durability increase is the purpose of this paper.…”

Section: Introductionmentioning

confidence: 99%

Zr+ ION BEAM SURFACE IRRADIATION FOR IMPROVING FATIGUE DURABILITY OF 12Cr1MoV AND 30CrMnSiNi2 STRUCTURAL STEELS

Panin¹,

Власов²,

Сергеев³

et al. 2014

Acta Metall Slovaca

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A cyclic tension and alternating bending tests of 12Cr1MoV and 30CrMnSiNi2 steels specimens in as-supplied state and after surface nanostructuring by Zr+ ion beam have been carried out. Distinctions in formation of strain induced relief, as well as the cracking pattern of modified surface layer are illustrated by methods of optical microscopy and interferential profilometry. Changes to occur in subsurface layer are characterized by means of nanoindentation and fractography (scanning electron microscopy) of fracture surfaces. The description of differences of deformation behavior is carried out with use of the multilevel approach.

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Role of local nanostructural states in plastic deformation and fracture of solids

Cited by 16 publications

References 19 publications

The structure and mechanical properties of VT23 laser-welded joints

The structure and mechanical properties of VT23 laser-welded joints

Wear resistance of steels under conditions of dry sliding friction and electric current of high density

Zr+ ION BEAM SURFACE IRRADIATION FOR IMPROVING FATIGUE DURABILITY OF 12Cr1MoV AND 30CrMnSiNi2 STRUCTURAL STEELS

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