Advertisement

Tensile and spring-back behavior of DP600 advanced high strength steel at warm temperatures

  • F Ozturk
  • S Toros
  • S Kilic
Article

Abstract

In recent years, the use of advanced high strength steels in automotive industry has been increased remarkably. Among advanced high strength steels, dual phase (DP) steels have gained a great attention owing to a combination of high strength and good formability. However, high strength usually increases the spring-back behavior of the material, which creates problems for the parts during the assembly. Thus, the uniaxial tensile deformation and spring-back behaviors of DP600 advanced high strength steel were investigated in rolling (0°), diagonal (45°), and transverse (90°) directions in the temperature range from room temperature (RT) to 300 °C. All tests were performed at a deformation speed of 25 mm/min. A V-shaped die (60°) was used for the spring-back measurements. The results indicated that the formability and spring-back of the material were decreased with increasing the temperatures. The material showed complex behaviors in different directions and at different temperatures.

Key words

advanced high strength steel DP600 warm forming spring-back 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Kleiner M, Geiger M, Klaus A. Manufacturing of Lightweight Components by Metal Forming [J]. Annals of the CIRP, 2003, 52(2): 521.CrossRefGoogle Scholar
  2. [2]
    Kleiner M, Chatti S, Klaus A. Metal Forming Techniques for Lightweight Construction [J]. J Mater Proc Technol, 2006, 177(1–3): 2.CrossRefGoogle Scholar
  3. [3]
    Neugebauer R, Altan T, Geiger M, et al. Sheet Metal Forming at Elevated Temperatures [J]. Annals of the CIRP, 2006, 55 (2): 793.CrossRefGoogle Scholar
  4. [4]
    Huh H, Kim S B, Song J H, et al. Dynamic Tensile Characteristics of TRIP-Type and DP-Type Steel Sheets for an Auto-Body [J]. Int J Mech Sci, 2008, 50(5): 918.CrossRefGoogle Scholar
  5. [5]
    Keeler S P. Application and Forming of Higher Strength Steel [J]. J Mater Process Technol, 1994, 46(3–4): 443.CrossRefGoogle Scholar
  6. [6]
    Ozturk F, Toros S, Bas M H, et al. Evaluation of Tensile Properties of High Strength Steels at Warm Temperatures and Various Strain Rates [J]. Steel Research International, 2008, 79(2): 295.Google Scholar
  7. [7]
    Mori K, Maki S, Tanaka Y. Warm and Hot Stamping of Ultra High Tensile Strength Steel Sheets Using Resistance Heating [J]. CIRP Annals-Manufacturing Technology, 2005, 54(1): 209.CrossRefGoogle Scholar
  8. [8]
    Marciniak Z, Duncan I J, Hu J S. Mechanics of Sheet Metal Forming [M]. Oxford: Butterworth-Heinemann, 2002.Google Scholar
  9. [9]
    Leu D K, Hsieh C M. The Influence of Coining Force on Spring-Back Reduction in V-Die Bending Process [J]. J Mater Proc Technol, 2008, 196(1–3): 230.CrossRefGoogle Scholar
  10. [10]
    Yanagimoto J, Oyamada K. Mechanisim of Springback-Free Bending of High Strength Steel Sheets Under Warm Forming Conditions [J]. Annals of the CIRP, 2007, 56(1): 265.CrossRefGoogle Scholar
  11. [11]
    Yanagimoto J, Oyamada K. Springback of High Strength Steels After Hot and Warm Sheet Formings [J]. Annals of the CIRP, 2005, 54(1): 213.CrossRefGoogle Scholar
  12. [12]
    Yanagimoto J, Oyamada K. Springback-Free Isothermal Forming of High-Strength Steel Sheets and Aluminum Alloy Sheets Under Warm and Hot Forming Conditions [J]. ISIJ International, 2006, 46(9): 1324.CrossRefGoogle Scholar
  13. [13]
    Tekaslan Ö, Gerger N, Şeker U. Determination of Spring-Back of Stainless Steel Sheet Metal in “V” Bending Dies [J]. Mater Design, 2008, 29(5): 1043.CrossRefGoogle Scholar
  14. [14]
    Imai K, Koyama J, Jin Y. High-Accuracy V-Bending System by Real Time Identifying Material Property [J]. J Mater Proc Technol, 2008, 201(1–3): 193.CrossRefGoogle Scholar
  15. [15]
    Asnafi N. Springback and Fracture in V-Die Air Bending of Thick Stainless Steel Sheets [J]. Mater Design, 2000, 21(3): 217.CrossRefGoogle Scholar
  16. [16]
    Leu D K. A Simplified Approach for Evaluating Bendability and Springback in Plastic Bending of Anisotropic Sheet Metals [J]. J Mater Proc Technol, 1997, 66(1–3): 9.CrossRefGoogle Scholar
  17. [17]
    Fei D, Hodgson P. Experimental and Numerical Studies of Spring-back in Air V-Bending Process for Cold Rolled TRIP Steels [J]. Nuclear Engineering and Design, 2006, 236(18): 1847.CrossRefGoogle Scholar
  18. [18]
    Li X, Yang Y, Wang Y, et al. Effect of the Material Hardening Mode on the Springback Simulation Accuracy of V-Free Bending [J]. J Mater Proc Technol, 2002, 123(2): 209.CrossRefGoogle Scholar
  19. [19]
    Zhang L C, Lu G, Leong S C. V-Shaped Sheet Forming by Deformable Punches [J]. J Mater Proc Technol, 1997, 63(1–3): 134.CrossRefGoogle Scholar
  20. [20]
    Romeu G L M, Ciurana J, Ferrer I. Springback Determination of Sheet Metals in an Air Bending Process Based on an Experimental Work [J]. J Mater Proc Technol, 2007, 191(1–3): 174.CrossRefGoogle Scholar

Copyright information

© China Iron and Steel Research Institute Group 2009

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNigde UniversityNigdeTurkey

Personalised recommendations