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SOLIDIFICATION OF A356 ALLOY UNDER DIFFERENT DIRECTIONS AND MAGNITUDES OF STATIC ELECTRICAL FIELD       
Yazarlar
Dr. Öğr. Üyesi Sercan BASİT Dr. Öğr. Üyesi Sercan BASİT
Kırşehir Ahi Evran Üniversitesi, Türkiye
Semih Birinci
Necmettin Maraşlı
Türkiye
Özet
A356 alloy, which is a commercial Al-Mg-Si alloy, was solidified with different magnitudes (0.42-1.25 kV cm(-1)) and directions of static electrical fields (E+: positive and E-: negative) to study the influences of E+ and E- on irregular interflake structure and mechanical property of Al-Mg-Si alloy. The direction of E is parallel or antiparallel to the solid-liquid (S-L) interface growth direction. The secondary dendrite arm spacing (lambda(2)), Al-alpha average grain surface area (S-alpha), sphericity ratio of Si into matrix (f(Si)) and Brinell hardness (HB) were measured for A356 alloy solidified with different E+ and E- values. The static electrical field force (F) affects the atomic mass flux at the S-L interface during the solidification and thus the microstructure, and physical and mechanical properties of the material are changed with E+ and E-. While the values of lambda(2), S-alpha and f(Si) increase with increasing the value of E-, the HB value decreases with increasing E-. However, the values of lambda(2), S-alpha and f(Si) decrease with increasing the E+ and the HB value increases with increasing E+. The relationships between them were determined with linear regression analysis. Graphic abstract Optical images of microstructure for the A356 alloy solidified with different directions and magnitudes of static electric fields; (a) 0.0 kV cm(-1) (b) 1.25 kV cm(-1) (c) - 1.25 kV cm(-1).
Anahtar Kelimeler
A356 alloy | electric field | hardness | microstructure | solidification | sphericity ratio
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı INTERNATIONAL JOURNAL OF METALCASTING
Dergi ISSN 1939-5981
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 04-2022
Cilt No 16
Sayı 2
Sayfalar 814 / 825
Doi Numarası 10.1007/s40962-021-00641-4
Makale Linki https://link.springer.com/article/10.1007/s40962-021-00641-4