Detailed deformation behaviour analysis of DP steels at warm forming temperatures via warm tensile tests
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Dosyalar
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
DP advanced high strength steels (AHSSs) have an important place in automotive industry for producing parts like B-pillars, door rings, etc. However, the excellent strength of AHSSs increases the issues related to their formability. Therefore, it is necessary to implement new forming processes to fully utilize the excellent properties of DP steels in more complex parts. In this study, the formability of DP steels (DP600, DP800) and their deformation behaviour at warm forming temperatures have been investigated by a series of tensile tests conducted at elevated temperatures (75, 175, 275, 375 degrees C) and two different strain rates (0.05, 0.005 s(-1)). To understand the deformation behaviour thoroughly, both instantaneous and average strain hardening - n and strain rate sensitivity - m values, the change in the hardening capacity and the microstructure have been analyzed. The results have shown that the formability of DP steels at 375 degrees C is more favourable as compared at room temperature.
Açıklama
Anahtar Kelimeler
Dp Steels; Ahss; Deformation Behaviour; Tensile Test; Warm Forming; Material Characterization; Strain Hardening; Strain Rate Sensitivity, Strain-Hardening Behavior; Dual-Phase Steels; Rate Sensitivity; Dp600; Stress; Rates
Kaynak
Ironmaking & Steelmaking
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
49
Sayı
6
