The effects of temperature and strain rate on yielding and springback behaviour of DP1000 dual phase steel

ÇAVUŞOĞLU O., Toros S., GÜRÜN H.

MATERIALS RESEARCH EXPRESS, vol.6, no.2, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.1088/2053-1591/aaea29
  • Journal Name: MATERIALS RESEARCH EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: sheet metal forming, springback, yield locus, DP1000, dual phase steel, HIGH-STRENGTH STEEL, MARTENSITE VOLUME FRACTION, FINITE-ELEMENT SIMULATION, METAL FORMING PROCESSES, SHEET-METAL, ELEVATED-TEMPERATURES, ALUMINUM-ALLOYS, MECHANICAL-PROPERTIES, LIMIT DIAGRAMS, STRESS
  • Gazi University Affiliated: Yes

Abstract

This study aims to investigate the effects of the temperature and strain rate on the yielding and springback behavior of DP1000 advanced high strength steel. For this purpose, material properties were defined using tensile tests at several temperatures (25 degrees C, 100 degrees C, 200 degrees C) and strain rates (0.0083 s(-1), 0.16 s(-1)). Yield loci were estimated by using Barlat-89 yield criteria. Springback behavior is specified by performing V bending tests. No significant effect was observed in the assessment of the effect of temperature on the yield locus and springback. Moreover, it was found that the increase in strain rate increased dramatically the yield locus and springback.