Tailored sheared blanks produced by incremental ECAP

Research output: Contribution to journalArticle

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142 Downloads (Pure)

Abstract

Incremental equal channel angular pressing (I-ECAP) is a process used for production of continuous ultrafine grained bars, plates and sheets. Normally the thickness of the processed billet is kept unchanged in consecutive passes to enable repetitive insertion into the same die. This is achieved by controlling the bottom dead centre of the reciprocating punch. However, if a final product requires being thinner and therefore longer, the bottom position of the punch can be lowered before the last pass. Going further, the bottom position of the punch can be changed during the process, which opens up a possibility to vary billet thickness along its length. Such a product, especially sheet, can serve as a preform for further metal forming operations and is known as tailored blank. This paper will show examples of varying thickness sheets produced by different configurations of I-ECAP. Experimental and finite element results will be presented.
Original languageEnglish
Pages (from-to)651-656
Number of pages6
JournalKey Engineering Materials
Volume651-653
DOIs
Publication statusPublished - 23 Apr 2015
Event18th Esaform Conference - Graz, Austria
Duration: 15 Apr 201517 Apr 2015

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Equal channel angular pressing
Metal forming
Ultrafine

Keywords

  • severe plastic deformation
  • incremental forming
  • equal channel angular pressing
  • tailored blanks

Cite this

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title = "Tailored sheared blanks produced by incremental ECAP",
abstract = "Incremental equal channel angular pressing (I-ECAP) is a process used for production of continuous ultrafine grained bars, plates and sheets. Normally the thickness of the processed billet is kept unchanged in consecutive passes to enable repetitive insertion into the same die. This is achieved by controlling the bottom dead centre of the reciprocating punch. However, if a final product requires being thinner and therefore longer, the bottom position of the punch can be lowered before the last pass. Going further, the bottom position of the punch can be changed during the process, which opens up a possibility to vary billet thickness along its length. Such a product, especially sheet, can serve as a preform for further metal forming operations and is known as tailored blank. This paper will show examples of varying thickness sheets produced by different configurations of I-ECAP. Experimental and finite element results will be presented.",
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author = "Andrzej Rosochowski and Lech Olejnik and Malgorzata Rosochowska",
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Tailored sheared blanks produced by incremental ECAP. / Rosochowski, Andrzej; Olejnik, Lech; Rosochowska, Malgorzata.

In: Key Engineering Materials, Vol. 651-653, 23.04.2015, p. 651-656.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tailored sheared blanks produced by incremental ECAP

AU - Rosochowski, Andrzej

AU - Olejnik, Lech

AU - Rosochowska, Malgorzata

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Y1 - 2015/4/23

N2 - Incremental equal channel angular pressing (I-ECAP) is a process used for production of continuous ultrafine grained bars, plates and sheets. Normally the thickness of the processed billet is kept unchanged in consecutive passes to enable repetitive insertion into the same die. This is achieved by controlling the bottom dead centre of the reciprocating punch. However, if a final product requires being thinner and therefore longer, the bottom position of the punch can be lowered before the last pass. Going further, the bottom position of the punch can be changed during the process, which opens up a possibility to vary billet thickness along its length. Such a product, especially sheet, can serve as a preform for further metal forming operations and is known as tailored blank. This paper will show examples of varying thickness sheets produced by different configurations of I-ECAP. Experimental and finite element results will be presented.

AB - Incremental equal channel angular pressing (I-ECAP) is a process used for production of continuous ultrafine grained bars, plates and sheets. Normally the thickness of the processed billet is kept unchanged in consecutive passes to enable repetitive insertion into the same die. This is achieved by controlling the bottom dead centre of the reciprocating punch. However, if a final product requires being thinner and therefore longer, the bottom position of the punch can be lowered before the last pass. Going further, the bottom position of the punch can be changed during the process, which opens up a possibility to vary billet thickness along its length. Such a product, especially sheet, can serve as a preform for further metal forming operations and is known as tailored blank. This paper will show examples of varying thickness sheets produced by different configurations of I-ECAP. Experimental and finite element results will be presented.

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