Metalurgija, Vol. 46 No. 1, 2007.
Prethodno priopćenje
New Approach to Evaluation of Formability of Higher-Strength Steel Strips
M. Buršák
I. Mamuzić
J. Micheľ
Sažetak
The paper analyses the material characteristics of deep-drawability of steel sheets with the thickness from 1 to 1,8 mm, the yield point above 330 MPa and the loading rate up to 150 m/min. The analysis resulted in the finding that with the loading rate up to ca 10 m/min the formability characteristics slightly increase and after exceeding this value these characteristics significantly decrease. In practice, the strain rates are below 1 s–1, therefore the material characteristics determined using standard tests can be used to determine the limit states up to the above-mentioned rate.
Ključne riječi
strain rate; formability; deep-drawability; cupping test; steel sheets
Hrčak ID:
6454
URI
Datum izdavanja:
12.12.2006.
Posjeta: 1.362 *