Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets

Research output: Contribution to conferencePaper

Abstract

Incremental equal channel angular pressing (I-ECAP) is an extension of the classical ECAP method used to produce ultrafine grained (UFG) metals. This paper investigates the first pass of I-ECAP performed on AA-1050 billets measuring 10x10x60mm and the effects of processing with two different dies with the channel intersection angle ϕ=90° and ϕ=120°. The forces required to produce billets were examined and compared. Micro hardness measurements were performed to create a hardness distribution contour map and to evaluate the strain distribution. Moreover FE simulations were performed to investigate the plastic strain distribution within the billets. It was found that using the ϕ=90° die results in higher deformation forces and also greater uniformity of strain distribution when compared to billets processed with ϕ=120° die. The experimental results correlated well with the findings of the simulations.

Conference

ConferenceThe 19th International ESAFORM Conference on Material Forming
CountryFrance
CityNantes
Period27/04/1629/04/16
Internet address

Fingerprint

Equal channel angular pressing
Hardness
Microhardness
Plastic deformation
Processing
Metals

Keywords

  • incremental equal channel angular pressing
  • severe plastic deformation
  • ultrafine grain material

Cite this

Salamati, M., Qarni, M. J., Tamimi, S., & Rosochowski, A. (2016). Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets. 1-12. Paper presented at The 19th International ESAFORM Conference on Material Forming, Nantes, France.
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abstract = "Incremental equal channel angular pressing (I-ECAP) is an extension of the classical ECAP method used to produce ultrafine grained (UFG) metals. This paper investigates the first pass of I-ECAP performed on AA-1050 billets measuring 10x10x60mm and the effects of processing with two different dies with the channel intersection angle ϕ=90° and ϕ=120°. The forces required to produce billets were examined and compared. Micro hardness measurements were performed to create a hardness distribution contour map and to evaluate the strain distribution. Moreover FE simulations were performed to investigate the plastic strain distribution within the billets. It was found that using the ϕ=90° die results in higher deformation forces and also greater uniformity of strain distribution when compared to billets processed with ϕ=120° die. The experimental results correlated well with the findings of the simulations.",
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Salamati, M, Qarni, MJ, Tamimi, S & Rosochowski, A 2016, 'Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets' Paper presented at The 19th International ESAFORM Conference on Material Forming, Nantes, France, 27/04/16 - 29/04/16, pp. 1-12.

Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets. / Salamati, Mohammad; Qarni, Muhammad Jawad; Tamimi, Saeed; Rosochowski, Andrzej.

2016. 1-12 Paper presented at The 19th International ESAFORM Conference on Material Forming, Nantes, France.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets

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AU - Qarni, Muhammad Jawad

AU - Tamimi, Saeed

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AB - Incremental equal channel angular pressing (I-ECAP) is an extension of the classical ECAP method used to produce ultrafine grained (UFG) metals. This paper investigates the first pass of I-ECAP performed on AA-1050 billets measuring 10x10x60mm and the effects of processing with two different dies with the channel intersection angle ϕ=90° and ϕ=120°. The forces required to produce billets were examined and compared. Micro hardness measurements were performed to create a hardness distribution contour map and to evaluate the strain distribution. Moreover FE simulations were performed to investigate the plastic strain distribution within the billets. It was found that using the ϕ=90° die results in higher deformation forces and also greater uniformity of strain distribution when compared to billets processed with ϕ=120° die. The experimental results correlated well with the findings of the simulations.

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KW - severe plastic deformation

KW - ultrafine grain material

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Salamati M, Qarni MJ, Tamimi S, Rosochowski A. Effect of channel angle on the material flow and hardness distribution during incremental ECAP of Al-1050 billets. 2016. Paper presented at The 19th International ESAFORM Conference on Material Forming, Nantes, France.