Тип публикации: статья из журнала
Год издания: 2024
Идентификатор DOI: 10.1007/s00170-024-13339-8
Ключевые слова: сombined rolling-extrusion, aluminum alloys, rare-earth metals, mechanical properties, modeling, electrical conductivity
Аннотация: The rheological, mechanical, and electrical properties and structure of rods and wires made of aluminum alloy concentration of 1% REM (0.6% Ce and 0.4% La) are investigated and presented. The rods were produced by combined rolling-extrusion (CRE) from two diferent types of billets: casting into a mold 14×14 mm and into electromagneПоказать полностьюtic mold (EMM) Ø12.5 mm. A database of the DEFORM 3D complex was created for computer modeling of the CRE process. The tensile strength of rods Ø9 and 5 mm obtained using CRE method is 120–140 MPa and elongation to failure is 15–26% for billets from EMM. For billets 14×14 mm, the ultimate tensile strength is 112–125 MPa, which is comparatively lower than that of rods made from round billets (elongation to failure is 26–34%). The plastic properties of the fnal wire Ø2 mm from a round billet after EMM are higher than wire Ø2 mm from a billet obtained by casting into a mold 14×14 mm. Rods after CRE from both types of billets are characterized by fairly high ductility. To obtain Ø2-mm wire from rods, no intermediate annealing was required. The values of electrical resistance are taken from 0.02271 to 0.0301 Ω‧mm2 /m for rods from 12.5-mm billets and from 0.02776 to 0.03413 Ω‧mm2 /m for rods from billets 14×14 mm. The electrical resistance values for wire Ø2 mm from billets 14×14 mm are higher than for wire obtained from rods after EMM. Microstructure shows that the fnal wire after CRE from billet in EMM has a more extensive structure than after CRE from billets with dimensions of 14×14 mm.
Журнал: The International Journal of Advanced Manufacturing Technology
Выпуск журнала: Т.131, №9-10
Номера страниц: 4699-4725
ISSN журнала: 02683768
Издатель: Springer-Verlag London Ltd