Influence of V–N Microalloying on the High-Temperature Mechanical Behavior and Net Crack Defect of High Strength Weathering Steel

Abstract

The influence of V-N microalloying on the high-temperature mechanical behavior of high strength weathering steel is discussed through thermomechanical simulation experiment. The difference of tensile strength caused by variation of [%V][%N] appears after proeutectoid phase change, and the higher level of [%V] [%N] is, the stronger the tensile strength tends to be. The ductility trough apparently becomes deeper and wider with the increase of [%V] [%N]. When the level of [%V][%N] reaches to 1.7 Â 10 −3 , high strength weathering steel shows almost similar reduction of area to 0.03% Nb-containing steel in the temperature range of 800-900℃, however, the ductility trough at the lowtemperature stage is wider than that of Nb-containing steel. Moreover, the net crack defect of bloom is optimized through the stable control of N content in low range under the precondition of high strength weathering steel with sufficient strength.

A novel method of preparing vanadium-based precursors and their enhancement mechanism in vanadium nitride preparation

“…1–4 Vanadium nitride is widely used in alloy components, coatings, battery materials, supercapacitor materials, and catalytic carriers 5–12 due to its high melting point, excellent wear resistance, high-temperature stability, and excellent electrical conductivity. 13–17 In order to meet the ever-increasing demand for vanadium nitride and the development of high-quality vanadium nitride, new methods to prepare vanadium nitride are becoming increasingly important.…”