Improvement in HAZ Toughness of Steel by TiN-MnS Addition.

Removal of MnS inclusions in molten steel using electropulsing

A method using electropulsing to separate inclusions from molten steel is developed, based on the differences in electrical properties between the inclusions and liquid metal. The inclusions have different electrical resistivity from that of the liquid steel and hence being expelled to the surface of the metal by electropulsing. In comparison with the as-solidified untreated steel, the size of ...

Effect of Composition and MnS Addition on Microstructure and Mechanical Properties of Powder Forged Copper Steel Parts

In this work, the effects of carbon content and manganese sulfide addition on the microstructure and mechanical properties of copper steel parts have been studied. Steel powder mixture containing 2%Cu and different graphite contents with and without MnS additions were compacted, sintered and forged to almost full density. Forged samples, with near theoretical densities, were tested for tensile,...

Improvement of Impact Toughness of API-X70 Steel Weld metals With Electromagnetic Vibration

Improvement of Impact Toughness of API-X70 Steel Weld metals With Electromagnetic Vibration

Creep Rupture of the Simulated HAZ of T92 Steel Compared to that of a T91 Steel

The increased thermal efficiency of fossil power plants calls for the development of advanced creep-resistant alloy steels like T92. In this study, microstructures found in the heat-affected zone (HAZ) of a T92 steel weld were simulated to evaluate their creep-rupture-life at elevated temperatures. An infrared heating system was used to heat the samples to 860 °C (around AC1), 900 °C (slightly ...