The Effect of Strain-Rate Sensitivity on Formability of AA 5754-O at Cold and Warm Temperatures


Ozturk F., PEKEL H. , HALKACI H. S.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, cilt.20, ss.77-81, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s11665-010-9652-y
  • Dergi Adı: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
  • Sayfa Sayıları: ss.77-81

Özet

Aluminum-magnesium (Al-Mg) alloys have been widely used in diverse applications ranging from automotive bodies to food processing industries because of their excellent high-strength-to-weight ratio, corrosion resistance, and recyclability potential. The formability of these alloys is decreased at room temperature (RT) and is related with the strain-rate sensitivity. This study presents the effect of strain-rate sensitivity on formability of AA 5754-O alloy sheet at a test temperature range of -60 to 250 A degrees C by duplicate tensile test at different strain rates. The test results indicated that the formability change with positive or negative strain-rate sensitivity values. It was observed that the strain-rate sensitivity values increased at negative temperatures with respect to RT. The best formability condition for this alloy in the test ranges was observed at 250 A degrees C and 0.0016 s(-1).