2015
DOI: 10.1002/adem.201500097
|View full text |Cite
|
Sign up to set email alerts
|

Some Physical Characteristics of Strain Hardening in Severe Plastic Deformation

Abstract: It is shown here using group theory principles that the Hencky strain is not an appropriate measure for tests involving simple shear, for which the von Mises formulation should be used exclusively. It is also shown analytically that the application of self-similarity principles to Stages III-IV indicates that these obey power laws, while the same principles do not apply to the other stages. As a result, they do not develop self-similar microstructures. Finally, the effect of strain path on the work hardening r… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
10
0

Year Published

2016
2016
2024
2024

Publication Types

Select...
5
1

Relationship

1
5

Authors

Journals

citations
Cited by 14 publications
(10 citation statements)
references
References 42 publications
0
10
0
Order By: Relevance
“…In [22] the scaling nature of the power-law interval of the hardening curve was established based on the self-similarity of the microstructure. Therefore, self-similarity at the micro-level is a physical reason of self-similarity at the macro-level.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…In [22] the scaling nature of the power-law interval of the hardening curve was established based on the self-similarity of the microstructure. Therefore, self-similarity at the micro-level is a physical reason of self-similarity at the macro-level.…”
Section: Resultsmentioning
confidence: 99%
“…It has been shown in [22] that the power-law hardening is originating from the self-similarity of the microstructure, while it has been shown in the present work that the self-similarity of HPT at the macro-level requires power-law hardening, Thus, there is a relationship between self-similarities at different scales in HPT: Self-similarity at the micro-level is a physical cause of self-similarity at the macro-level.…”
Section: Modelmentioning
confidence: 99%
“…[27,28] However, for structure formation in polycrystals, the rotational strain modes, also known as vortex or turbulent modes, are important as well. [29,30] The contribution of these modes into deformation was recently considered through the example of ECAP processing. [7] Here, the movement of material points along Lagrange's physical paths was used, i.e., along the physical paths of mass transfer.…”
Section: Discussion Of Resultsmentioning
confidence: 99%
“…An important feature of simple shear determining microstructure formation in metallic materials is that, unlike pure shear, it leads to an early formation of shear bands and their further transformation into ultrafine grains. [14][15][16] Analyzing the process of simple shear, the authors showed in various studies [17,18] that such a shear forms a separate group of geometric transformations, different from the one typical for pure shear. It turns out that the von Mises strain satisfies the group properties of simple shear, but the Hencky strain does not.…”
Section: Simple and Complex Loading Of A Billet During Deformationmentioning
confidence: 99%
See 1 more Smart Citation