Effect of alloying elements on the composition of carbide phases and mechanical properties of the matrix of high-carbon chromium–vanadium steel

High-strength crystalline/amorphous composites materials based on (Ti-Ni)-(Cu-Zr) system were developed. The optimal concentrations of additional alloying elements Al, Fe, and Cr were obtained. Structural investigations were carried out using X-ray diffraction equipment (XRD) and scanning electron microscope (SEM) with an energy-dispersive X-ray module (EDX). It was found that additives of aluminum and chromium up to 5 at% dissolve well into the solid matrix solution of the NiTi phase. At a concentration of 5 at%, the precipitation of the unfavorable NiTi2 phase occurs, which, as a result, leads to a dramatic decrease in ductility. Iron dissolves very well in the solid solution of the matrix phase due to chemical affinity with nickel. The addition of iron does not cause the precipitation of the NiTi2 phase in the concentration range of 0–8 at%, but with an increase in concentration, this leads to a decrease in the mechanical properties of the alloy. The mechanical behavior of alloys was studied in compression test conditions on a universal testing machine. The developed alloys have a good combination of strength and ductility due to their dual-phase structure. It was shown that additional alloying elements lead to a complete suppression of the martensitic transformation in the alloys.

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Effect of alloying elements on the mechanical properties of structural steels in the highly stable state

Metal Science and Heat Treatment ◽

10.1007/bf00729869 ◽

1990 ◽

Vol 32 (4) ◽

pp. 270-274

Author(s):

B. B. Vinokur ◽

S. E. Kondratyuk ◽

O. G. Kasatkin

Keyword(s):

Mechanical Properties ◽

Stable State ◽

Structural Steels ◽

Alloying Elements ◽

Effect Of Alloying

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Effect of Alloying Elements on the Consolidation and Mechanical Properties of Ti Compacts by SPS

Materials Science Forum ◽

10.4028/www.scientific.net/msf.690.469 ◽

2011 ◽

Vol 690 ◽

pp. 469-472 ◽

Cited By ~ 1

Author(s):

Genki Kikuchi ◽

Hiroshi Izui

Keyword(s):

Mechanical Properties ◽

Tensile Property ◽

Sintered Density ◽

Density Ratio ◽

Alloying Elements ◽

Plasma Sintering ◽

Spark Plasma ◽

Stabilizing Element ◽

Density Rate ◽

Effect Of Alloying

In this study, we focused on the effect of alloying elements (Fe, Mo, and Al) on the consolidation and mechanical properties of Ti compacts. The elemental blended powders is manufactured by spark plasma sintering. The effects of amount of alloying elements and sintering temperature on the relative density and tensile properties of Ti compacts were investigated. The addition of β-stabilizing elements (Fe and Mo) was found significantly improve the densification of Ti compacts, where the sintered density ratio of Ti-5 wt.% Mo specimen was higher than 99.9 %, and Ti-5 wt.% Fe specimen was higher than 99.0 %. On the other hand, addition of Al as α-stabilizing element showed the sintered density rate of Ti-5 wt.% Al specimen was higher than 99.9 %. The tensile property for sintered Ti-5 wt.% Mo specimens had the highest elongation of 16 %. It will be discussed the microstructures and tensile property of the compacts.

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