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Iranian Journal of Materials Forming، جلد ۹، شماره ۱، صفحات ۲۴-۳۰
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عنوان انگلیسی Constitutive Modeling of a Nb-Contained Advanced High-Strength Steel (AHSS) under Hot Compression Experiments
چکیده انگلیسی مقاله In this study, the evaluation of hot forming behavior of an advanced high-strength steel (AHSS), namely Nb-Contained dual phase (DP) steel, is carried out using hot compression tests at temperatures of 850, 900, and 950ºC with strain rates of 0.001, 0.01, and 0.1 (s-1). The resulting flow curves indicated the occurrence of dynamic recrystallization (DRX) at all different conditions of testing. Furthermore, based on the measured stress-strain data, material constants and activation energy (Q) were calculated for the peak stress. Additionally, the values of these constants were estimated for different true strains and the correlation between them and the strain has been illustrated by various diagrams. The comparison shows that the derived Arrhenius equation has an accepted accuracy for predicting the values of flow stress.
کلیدواژه‌های انگلیسی مقاله Hot compression, constitutive equation, High-strength steel, Dual Phase Steel
نویسندگان مقاله Hooman Chavilian |
Department of Materials Engineering, Malek Ashtar University of Technology, Shahinshahr, Iran

Reza Vafaei |
Department of Materials Engineering, Malek Ashtar University of Technology, Shahinshahr, Iran

Hasan Sheikh |
Department of Materials Engineering, Malek Ashtar University of Technology, Shahinshahr, Iran

نشانی اینترنتی https://ijmf.shirazu.ac.ir/article_6521_cfb6126a3290c67143dcc4e750812539.pdf
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