Nanostructuring of Materials by Severe Deformation Processes

2020 ◽  
pp. 243-259
Author(s):  
Aman J. Shukla ◽  
Devesh K. Chouhan ◽  
Somjeet Biswas
Keyword(s):  
Severe Deformation ◽  
Deformation Processes

Experimental study of deformation processes in large-scale concrete structures under quasistatic loading

2020 ◽  
Vol 15 (5) ◽  
pp. 619-633
Author(s):  
Igor Shardakov ◽  
Irina Glot ◽  
Aleksey Shestakov ◽  
Roman Tsvetkov ◽  
Valeriy Yepin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Large Scale ◽  
Concrete Structures ◽  
Deformation Processes ◽  
Quasistatic Loading

The carboniferous onset of subduction at SW Gondwana revisited: Sedimentation and deformation processes along the late Paleozoic forearc of north Chile (21°–33° S)

2021 ◽  
pp. 103149
Author(s):  
Christian Creixell ◽  
Fernando Sepúlveda ◽  
Javier Álvarez ◽  
Paulina Vásquez ◽  
Ricardo Velásquez
Keyword(s):  
Late Paleozoic ◽  
Deformation Processes ◽  
Sw Gondwana

Effect of severe deformation on the microstructure and properties of Nd-Fe-B powders caused by hydrostatic extrusion

2021 ◽  
Vol 524 ◽  
pp. 167665
Author(s):  
W. Kaszuwara ◽  
P. Pawlik ◽  
J. Zygmuntowicz ◽  
B. Michalski ◽  
M. Kulczyk
Keyword(s):  
Hydrostatic Extrusion ◽  
Microstructure And Properties ◽  
Severe Deformation

Soft Reduction of a Cast Ingot on the Incomplete Crystallization Stage

2013 ◽  
Vol 762 ◽  
pp. 261-265 ◽  
Author(s):  
Tanya I. Cherkashina ◽  
Igor Mazur ◽  
Sergey A. Aksenov
Keyword(s):  
Metal Forming ◽  
Physical Simulation ◽  
Fluid Layer ◽  
Liquid Core ◽  
Soft Reduction ◽  
Deformation Processes ◽  
Novel Method ◽  
Full Scale Tests ◽  
Crystallization Stage

Numerical and physical simulation on model samples can provide data for various aspects of metal forming, without resorting to time-consuming and costly full-scale tests. This paper presents examples of modeling of the deformation of a slab with a liquid core. The use of soft reduction can enhance the homogeneity of the structure, which improves the quality of cast billets. Mathematical modeling is described here where the fluid layer is taken into account by the influence of boundary conditions in the crust in the form of ferrostatic pressure, which allows calculation of the intensity of deformation, total deformation and strain. It also provides a novel method for studying the process of soft reduction. It is based on a physical model of the slab consisting of a closed solid shell made of a calibrated lead shot and the Wood's alloy. To simulate the liquid molten metal, the interior of the shell is filled with gelatin. This approach can be applied to further studies on deformation processes and the penetration of deformation into complex metallic systems.

scholarly journals Calculation Model of Resistance to Hot Deformation in Consideration of Metallurgical Phenomena in Continuous Hot Deformation Processes

1984 ◽  
Vol 70 (10) ◽  
pp. 1392-1399 ◽  
Author(s):  
Takehide SENUMA ◽  
Hiroshi YADA ◽  
Yoshikazu MATSUMURA ◽  
Shuichi HAMAUZU ◽  
Koe NAKAJIMA
Keyword(s):  
Hot Deformation ◽  
Calculation Model ◽  
Deformation Processes

Milling Curves Influence in Ring Rolling Processes

2014 ◽  
Vol 622-623 ◽  
pp. 956-963 ◽  
Author(s):  
Luca Giorleo ◽  
Elisabetta Ceretti ◽  
Claudio Giardini
Keyword(s):  
Numerical Approach ◽  
The Other ◽  
Ring Rolling ◽  
Roll Speed ◽  
Forming Process ◽  
Industrial Case Study ◽  
Industrial Environment ◽  
Ring Shape ◽  
Deformation Processes

Ring Rolling is a complex hot forming process used for the production of shaped rings, seamless and axis symmetrical workpieces. The main advantage of workpieces produced by ring rolling, compared to other technological processes, is given by the size and orientation of grains, especially on the worked surface which give to the final product excellent mechanical properties. In this process different rolls (Idle, Axial, Guide and Driver) are involved in generating the desired ring shape. Since each roll is characterized by a speed law that can be set independently by the speed law imposed to the other rolls, an optimization is more critical compared with other deformation processes. Usually, in industrial environment, a milling curve is introduced in order to correlate the Idle and Axial roll displacement, however it must be underlined that different milling curves lead to different loads and energy for ring realization. In this work an industrial case study was modeled by a numerical approach: different milling curves characterized by different Idle and Axial roll speed laws (linearly decreasing, constant, linearly increasing) were designed and simulated. The results were compared in order to identify the best milling curve that guarantees a good quality ring (higher diameter, lower fishtail) with lower loads and energy required for manufacturing.

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