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Evaluation of Formability Under Different Deformation Modes for TWIP900 Steel       
Yazarlar
Doç. Dr. Süleyman KILIÇ Doç. Dr. Süleyman KILIÇ
Ahi Evran Üniversitesi, Türkiye
Fahrettin Öztürk
Ankara Yıldırım Beyazıt Üniversitesi, Türkiye
Özet
Automotive manufacturers always seek high strength and high formability materials for automotive bodies. Advanced high strength steels (AHSS) are excellent candidates for this purpose. These steels generally show a reasonable degree of formability, in addition to their high strength. One particular type is the twinning-induced plasticity (TWIP) steel, which is a high manganese austenite steel, and represents a second generation in AHSS. In this study, comprehensive deformation analysis of TWIP900CR steel including tensile, bending, Erichsen, and deep drawing of cylindrical cups tests is made. Finite element simulation of U and V shaped bending processes is also performed. Results indicate that the TWIP steel has good mechanical properties and high formability. However, spring-back is quite significant. The coining force should be considered in order to reduce the amount of springback. For springback prediction, it is found that the Yld2000-2d material model has better prediction capability than the Hill48 model.
Anahtar Kelimeler
TWIP | AHSS | formability | springback | Erichsen | deep drawing
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME
Dergi ISSN 0094-4289
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 01-2017
Cilt No 139
Sayı 3
Sayfalar 8 / 0
Doi Numarası 10.1115/1.4035621
Makale Linki http://dx.doi.org/10.1115/1.4035621