Naslov
Torsion plastomer results used for determination of degree of softening in steel

Autori
Kliber, Jiri ; Mamuzić, Ilija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of International Conference on Progresivnyje technologii plasticeskoj deformaciji / - Moskva : MISIS Moskva, OOOTrumpf, 2009, 445-451

Skup
International Conference on Progresivnyje technologii plasticeskoj deformaciji

Mjesto i datum
Moskva, Ruska Federacija, 15.09.2009. - 19.09.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
torsion plastometar; steel; softening

Sažetak
Controlled forming of microalloyed steels containing added microalloying elements, such as niobium and vanadium, produces materials with higher yield strenght and ultimate strenght. If the required conditions of thermomechanical treatment are used, high toughness and resistance to low-temperature brittleness is achieved. Owing to lower amount of carbon, the steels have good weldability. To examin the influence of repeated straining, the simulation os performed on plastometers: in this case torsion test was choosen. The results of torsion tests, such as torque and velocity, are converted to values of stress and strain and analysed. The degree of softening X, described by Avrami equation, enables evaluation of yield strenght and peak strains in interrupted tests. The analysis of the softened fraction X included a new method of comparing areas below measured curves.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA