Effect of low strain rate on formability of aluminium alloy 2014 by means of torsion test was performed. The presented experimental results exhibit decrease of the ductility with increase and decrease of ε and T, respectively, and optimal values of , ε T are thus obtained

E. Evangelista

J. Bidulská

M. Cabbibo

R. Bidulský

T. Kvačkaj

English

Bidulská, J.

Kvačkaj, T.

Bidulský, R.

Cabbibo, M.

Evangelista, E.

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Effect of Low Strain Rate on Formability of Aluminium Alloy

T. Kvaèkaj

CABIBBO, MARCELLO

EVANGELISTA, ENRICO

IRIS UniversitÃ  Politecnica delle Marche

Effect of low strain rate on formability of aluminium alloy

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METALURGIJA 46 (2007) 3, 157-159 157J. BIDULSKÁ et al.: EFFECT OF LOW STRAIN RATE ON FORMABILITY OF ALUMINIUM ALLOYReceived - Primljeno: 2006-03-14ISSN 0543-5846METABK 46 (3) 157-159 (2007)UDC - UDK 669.715:620.175:620.178.7:539.37=111EFFECT OF LOW STRAIN RATE ON FORMABILITY OF ALUMINIUM ALLOYINTRODUCTION-materials under shear–3 to 10 s–1-ture, Ntorque, Mk.Mk– N  – ) curves 33 3 ,2kM m nr (1)- stress / MPa,Mk - torque /N·mm,rn, ,ln ln,      ,ln lnk kT TM Mm n(2)- strain rate /s–1,T 2 ,3rNL (3)- equivalent strain /–,RNL Effect of low strain rate on formability of aluminium alloy 2014 by means of torsion test was performed. The presented experimental results exhibit decrease of the ductility with increase and decrease of  and T, respec-tively, and optimal values of , T are thus obtained.Key words: aluminium alloy, torsion test, stress-strain curves, formability- i T i T. aluminijska slitina, torziono ispitivanje, krivulje naprezanje - deformacija, obradivostMETALURGIJA 46 (2007) 3, 157-159158J. BIDULSKÁ et al.: EFFECT OF LOW STRAIN RATE ON FORMABILITY OF ALUMINIUM ALLOYMATERIAL AND EXPERIMENTAL PROCEDUREcompositions, Table 1.-–3, 10–2 and 10–1 s. -EXPERIMENTAL RESULTS AND DISCUSSIONMicrohardness-materials increases.-2Stress-strain curves -METALURGIJA 46 (2007) 3, 157-159 159J. BIDULSKÁ et al.: EFFECT OF LOW STRAIN RATE ON FORMABILITY OF ALUMINIUM ALLOY-T. f–3 s–1.CONCLUSIONS--T = 300  = 10–3 s–1.-–3 and 10 –2 s–1–1 s–1Fracture strain-f -mation temperature T and in the Table 2.  Evaluation simple because it varies -men shape and dimension, REFERENCES155.--als Science 38 (2003) 1, 81 - 88.- 401.219 - 274.- 465.229 - 237.-25 (2004) 5, 439 - 445.-5329 - 5338.- 268.239 - 245.Acknowledgment

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Effect of Low Strain Rate on Formability of Aluminium Alloy

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