SIZE EFFECT IN EQUAL CHANNEL ANGULAR PRESSING (ECAP) PROCESS

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RIAZAT M.; FARAJI G.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Advanced Materials and Processing Year:2015 | Volume:3 | Issue:3 Page(s): 3-12

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Information Journal Paper

Title

SIZE EFFECT IN EQUAL CHANNEL ANGULAR PRESSING (ECAP) PROCESS

Author(s)

RIAZAT M. | FARAJI G. | Issue Writer Certificate

Keywords

ECAP

SIZE EFFECT

STRAIN HOMOGENEITY

TOTAL FORCE

FRICTION FORCE

EXPERIMENT

Abstract

The influence of the sample size (diameter while keeping the length constant) in equal channel angular pressing (ECAP) of pure aluminum is examined using finite element method (FEM) and EXPERIMENT. Aluminum rods with different sizes were processed via ECAP and the effect of the sample size on the STRAIN HOMOGENEITY, process load, and the ratio of the friction to the TOTAL FORCE was evaluated. The results showed that there is no distinct trend in variation of the STRAIN HOMOGENEITY when the sample diameter is changed although largest diameter sample exhibits the best STRAIN HOMOGENEITY. It was apparent that an increase in the sample diameter caused an increase in the total required load. A decrease in the sample size led to a significant increase in the ratio of the friction to the TOTAL FORCE. On the other hand, the FRICTION FORCE is more sensitive than the deformation force to the sample size. More precisely, the friction to total load ratio may be related to the ratio of the sample length to the sample diameter (l/d). In a constant sample length, friction to total load ratio amplifies significantly with a decrease in the sample diameter. The present study showed some limitation for the scaling up of the ECAP process for the industrial application especially with increase in the sample length. It may be concluded that the ECAP processing is not suitable method for producing of long UFG materials.

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APA: Copy

RIAZAT, M., & FARAJI, G.. (2015). SIZE EFFECT IN EQUAL CHANNEL ANGULAR PRESSING (ECAP) PROCESS. JOURNAL OF ADVANCED MATERIALS AND PROCESSING (JOURNAL OF MATERIALS SCIENCE), 3(3), 3-12. SID. https://sid.ir/paper/677234/en

Vancouver: Copy

RIAZAT M., FARAJI G.. SIZE EFFECT IN EQUAL CHANNEL ANGULAR PRESSING (ECAP) PROCESS. JOURNAL OF ADVANCED MATERIALS AND PROCESSING (JOURNAL OF MATERIALS SCIENCE)[Internet]. 2015;3(3):3-12. Available from: https://sid.ir/paper/677234/en

IEEE: Copy

M. RIAZAT, and G. FARAJI, “SIZE EFFECT IN EQUAL CHANNEL ANGULAR PRESSING (ECAP) PROCESS,” JOURNAL OF ADVANCED MATERIALS AND PROCESSING (JOURNAL OF MATERIALS SCIENCE), vol. 3, no. 3, pp. 3–12, 2015, [Online]. Available: https://sid.ir/paper/677234/en

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