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Article
Effect of Heat Treatment on Microstructure and Hardness of a High-Chromium Cast Iron Roll
The effect of tempering and of quenching + tempering including step tempering on the microstructure and properties of centrifugally cast rolls made of high-chromium cast iron HCCI is studied. It is shown that ...
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Article
Effects of Niobium on Microstructure, Hardness and Wear Behavior for High-Speed Steel Rolls
In order to refine the microstructure and improve the performance of high-speed steel (HSS) roll, the effects of Nb addition on the microstructure, hardness, and wear behavior were evaluated. The results show ...
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Article
Effect of Dissolution and Precipitation of Nb on Phase Transformation, Microstructure, and Microhardness of Two High-Nb Pipeline Steels
Niobium (Nb) as an important microalloying element is widely applied in high strength pipeline steels. In this work, the continuous cooling transformation diagrams of two high-Nb steels with and without hot de...
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Article
Quantitative Research on Dissolving of Nb in High Nb Microalloyed Steels during Reheating
The accurate prediction of soluble Nb content during reheating is helpful for the design of chemical composition and reheating parameters for Nb-containing steels. The dissolution behavior of Nb in high Nb mic...
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Article
Effect of Nb on Mechanical Properties of HAZ for High-Nb X80 Pipeline Steels
The mechanical properties of heat affected zone (HAZ) of two commercial high-Nb X80 grade pipeline steels with different alloy elements were investigated using thermal simulation performed on a Gleeble-3500 th...
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Article
Effect of Nb Solute and NbC Precipitates on Dynamic or Static Recrystallization in Nb Steels
Nb is often considered to be a powerful alloying element for controlling the recrystallization process in microalloyed high strength steels. However, Nb can be presented either as solute in solution, where it ...
