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Kawulok, Petr
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Publications (9/9 displayed)
- 2022INFLUENCE OF TEMPERATURE AND STRUCTURE ON THE FORMABILITY OF STEELS FOR THE PRODUCTION OF SEAMLESS TUBES
- 2022FORMABILITY OF INVAR 36 ALLOY AT HIGH TEMPERATURES
- 2014Effect of Ti2AlC particles on the microstructure and elevated-temperature-deformation properties of g-TiAl alloys
- 2013Comparison of methods for physical determination of phase transformations temperatures
- 2013Activation energy in hot forming and recrystallization models for magnesium alloy AZ31citations
- 2013Influence of calculation method on value of activation energy in hot formingcitations
- 2013Characteristics of plasticity and microstructure of hot forming magnesium alloys Mg-Al-Zn typecitations
- 2012Structural and mechanical properties of laboratory rolled steels high-alloyed with manganese and aluminiumcitations
- 2011Complex flow stress model for a magnesium alloy AZ31 at hot formingcitations
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article
FORMABILITY OF INVAR 36 ALLOY AT HIGH TEMPERATURES
Abstract
<jats:p>By using of hot tensile tests, which were performed on simulator HDS-20, the formability of Invar 36 alloy was investigated. By a special type of a tensile test, involving a continuous control heating of the tested specimens and their simultaneous load by a constant tensile force of 80 N, a nil-strength temperature of investigated alloy 1419 °C was determined. By continuous uniaxial tensile tests to rupture the strength and plastic properties of the Invar 36 alloy were determined in the wide range of deformation temperatures (from 800 °C to 1390 °C) and mean strain rates (from 0.09 s-1 to 75 s-1). On the basis of obtained results the 3D maps were constructed, expressing the dependence of the contractual hot ultimate tensile strength, hot ductility and hot reduction of area of the Invar 36 alloy on the deformation temperature and on the mean strain rate. Based on the determined plastic properties, the nil-ductility temperature of the investigated alloy of 1390 °C was also determined.</jats:p>