Effect of aging and cold working on the resistance to plastic deformation of structural steels under low-cycle loading

1970 ◽  
Vol 2 (1) ◽  
pp. 39-42
Author(s):  
N. A. Makhutov ◽  
A. M. Shcherbak ◽  
V. G. Poida ◽  
V. F. Terent'ev
Keyword(s):  
Plastic Deformation ◽  
Cold Working ◽  
Structural Steels ◽  
Cycle Loading

Influence of Severe Plastic Deformation on Physicomechanical Properties of Ti-40 mas % Nb Alloy

2016 ◽  
Vol 685 ◽  
pp. 525-529
Author(s):  
Zhanna G. Kovalevskaya ◽  
Margarita A. Khimich ◽  
Andrey V. Belyakov ◽  
Ivan A. Shulepov
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Cold Working ◽  
Young Modulus ◽  
Physicomechanical Properties ◽  
X Ray Diffraction ◽  
Refined Grains ◽  
X Ray ◽  
Initial Alloy ◽  
Composition Structure

The changes of the phase composition, structure and physicomechanical properties of Ti‑40 mas % Nb after severe plastic deformation are investigated in this paper. By the methods of microstructural, X-ray diffraction analysis and scanning electron microscopy it is determined that phase and structural transformations occur simultaneously in the alloy after severe plastic deformation. The martensitic structure formed after tempering disappears. The inverse α'' → β transformation occurs. The structure consisting of oriented refined grains is formed. The alloy is hardened due to the cold working. The Young modulus is equal to 79 GPa and it is less than that of initial alloy and close to the value obtained after tempering. It is possible that Young modulus is reduced by additional annealing.

scholarly journals Formation of microstructure and properties of Cu-3Ti alloy in thermal and thermomechanical processes

2017 ◽  
Vol 62 (1) ◽  
pp. 223-230 ◽  
Author(s):  
A. Szkliniarz
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Plastic Deformation ◽  
Cold Working ◽  
Cold Deformation ◽  
Solution Treatment ◽  
Cold Plastic Deformation ◽  
Working Solution ◽  
Thermomechanical Processes ◽  
Selection Of

Abstract This paper presents the possibilities of forming the microstructure as well as mechanical properties and electrical conductivity of Cu-3Ti alloy (wt.%) in thermal and thermomechanical processes that are a combination of homogenising treatment, hot and cold working, solution treatment and ageing. Phase composition of the alloy following various stages of processing it into the specified semi-finished product was being determined too. It was demonstrated that the application of cold plastic deformation between solution treatment and ageing could significantly enhance the effect of hardening of the Cu-3Ti alloy without deteriorating its electrical conductivity. It was found that for the investigated alloy the selection of appropriate conditions for homogenising treatment, hot and cold deformation as well as solution treatment and ageing enables to obtain the properties comparable to those of beryllium bronzes.

Plastic Deformation Behavior of Micro-Alloyed Cold Forging Steel

2007 ◽  
Vol 26-28 ◽  
pp. 61-64
Author(s):  
Yong Nam Kwon ◽  
Young Seon Lee ◽  
Jung Hwan Lee
Keyword(s):  
Plastic Deformation ◽  
Work Hardening ◽  
Cold Working ◽  
Cold Forging ◽  
Element Analysis ◽  
Die Life ◽  
Heat Treated ◽  
Plastic Deformation Behavior ◽  
Save Energy ◽  
Life Predictions

Micro-alloyed cold forging steel has been developed to rule out heat treatment process before forging in order to save energy consumption. These non heat-treated cold forging steels utilize the work hardening during cold working to ensure the mechanical properties. In other words, the required strength of forged part is achieved by work hardening with the accumulation of plastic strain during the cold working. Therefore, the plastic deformation characteristics should be carefully understood for successful process design. Evolution of both microstructure and plastic characteristics of micro-alloyed cold forging steel has been investigated in the present study. For the optimization of forging processes, finite element analysis and die life predictions were carried out.

scholarly journals Model of long-length part flattening by mobile local bend

2018 ◽  
Vol 2018 (6) ◽  
pp. 44-48
Author(s):  
Альберт Королев ◽  
Albert Korolev ◽  
Михаил Решетников ◽  
Mihail Reshetnikov ◽  
Сергей Савран ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Bending Moment ◽  
Energy Approach ◽  
Geometrical Parameters ◽  
Technological Parameters ◽  
Continuous Rotation ◽  
Cycle Loading ◽  
Uniform Area

In the paper there is described a method of flattening and stabilization of geometrical parameters of long-length parts. The method is based on the formation of a uniform area displacement of an elasto-plastic deformation formed by a bending moment at continuous rotation of a part which results in the occurrence of multi-cycle loading. Because of the action of controlled multi-cycle loading takes place an accumulation and further relaxation of inner stresses. The process of flattening and stabilization of geometrical parameters is described by a simulator showing a tie between geometrical, physic-mechanical and technological parameters. At the heart of a simulator is an energy approach to the description of an elasto-plastic deformation of a part at multi-cycle loading.

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