Effect of Martensite Volume Fraction on Forming Limit Diagrams of Dual-Phase Steel

被引：0
作者：
Mohammad Zaeimi
Ali Basti
Majid Alitavoli
机构：
[1] University of Guilan,Department of Mechanical Engineering
来源：
Journal of Materials Engineering and Performance | 2015年 / 24卷
关键词：
dual-phase steel; forming limit diagram; M-K model; Newton-Raphson method;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Prediction of the onset of failure due to localized necking has an important role on the determination of the formability of sheet metal, especially dual-phase steels, because of their increasing applications in the automotive industry. In the present study, a new application of the M-K model and theoretical forming limit diagram has been proposed. It is shown that this model can be useful in predicting the effect of microstructural aspects on the formability of dual-phase steels. For this purpose, the limiting strains of the dual-phase (ferrite-martensite) steel under different martensite volume fractions have been calculated. Furthermore, the effect of the heating rate on the formability of the DP samples has been predicted. To solve the non-linear system of equations, the modified Newton-Raphson method has been used. The results show that the limiting strains decrease by increasing the amount of martensite volume fractions. Furthermore, by increasing the heating rate, the dependence of the forming limit curves on the martensite volume fraction will be decreased.
引用
收藏
页码：1781 / 1789
页数：8
相关论文
共 58 条
  • [11] Owen WS(1952)Plastic Instability Under Plane Stress J. Mech. Phys. Solids 1 1-18
  • [12] Huper T(1967)Limit Strains in the Process of Stretch-Forming Sheet Metal Int. J. Mech. Sci. 9 609-620
  • [13] Endo S(1990)Calculations of Forming Limit Diagrams Metal. Trans. A 21 87-94
  • [14] Ishikawa N(1989)Plastic Behavior and Stretchability of Sheet Metals. Part II. Effect of Yield Surface Shape on Sheet Forming Limit Int. J. Plast. 5 131-147
  • [15] Osawa K(1998)Prediction of Forming Limit Curves of Sheet Metals Using Hill’s, 1993 User-Friendly Yield Criterion of Anisotropic Materials Int. J. Mech. Sci. 40 913-925
  • [16] Choi KS(2000)Forming Limit Diagrams for Anisotropic Metal Sheets with Different Yield Criteria Int. J. Solids Struct. 37 5037-5059
  • [17] Liu WN(2002)A More General Model for Forming Limit Diagrams Prediction J. Mater. Process. Technol. 125-126 213-218
  • [18] Sun X(2002)The Performance of Yld96 and BBC2000 Yield Functions in Forming Limit Prediction J. Mater. Process. Technol. 125-126 281-286
  • [19] Khaleel MA(2004)A Combined Necking and Shear Localization Analysis for Aluminum Sheets under Biaxial Stretching Conditions Int. J. Plast. 20 1953-1981
  • [20] Sun X(2008)Implementation of a Robust Algorithm for Prediction of Forming Limit Diagrams J. Mater. Eng. Perform. 17 1-6
123456