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Verlagsausgabe
DOI: 10.5445/IR/1000085262
Veröffentlicht am 23.08.2018

Mechanical modelling of the plastic flow machining process

Vu, V. Q.; Beygelzimer, Y.; Kulagin, R.; Toth, L. S.

Abstract:
A new severe plastic deformation process, plastic flow machining (PFM), was introduced recently to produce sheet materials with ultrafine and gradient structures from bulk samples in one single deformation step. During the PFM process, a part of a rectangular sample is transformed into a thin sheet or fin under high hydrostatic pressure. The obtained fin is heavily deformed and presents a strain gradient across its thickness. The present paper aims to provide better understanding about this new process via analytical modelling accompanied by finite element simulations. PFM experiments were carried out on square commercially pure aluminum (CP Al) billets. Under pressing, the material flowed from the horizontal channel into a narrow 90° oriented lateral channel to form a fin sheet product, and the remaining part of the sample continued to move along the horizontal channel. At the opposite end of the bulk sample, a back-pressure was applied to increase the hydrostatic pressure in the material. The experiments were set at different width sizes of the lateral channel under two conditions; with or without applying back-pressure. A factor ... mehr


Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1996-1944
URN: urn:nbn:de:swb:90-852623
KITopen ID: 1000085262
HGF-Programm 43.22.01; LK 01
Erschienen in Materials
Band 11
Heft 7
Seiten Art. Nr.: 1218
Schlagworte lateral extrusion ratio; Finite Element (FE) simulation; analytical modelling; plastic flow machining; back pressure
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