Carbide coarsening during creep in 12 percent CrMoV steel

Article Abstract:

Carbide coarsening in a 12% CrMoV steel was studied. Investigations in the gauge length and in the head for both interrupted and ruptured creep specimens tested at an initial stress of 80 MPa at different temperatures and at 600 degrees C at various initial stresses were conducted. The contributions to the rise in strain rate in the tertiary creep were studied in terms of plastic deformation. The rise in strain rate was primarily due to the microstructural degradation by carbide coarsening and the cavitation accumulation.

Research, Materials, Steel, Creep (Materials), Carbides

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Microwave synthesis and characterization of magnesium based composites containing nanosized SiC and Hybrid (SiCAl2O3) reinforcements

Article Abstract:

Monolithic magnesium, nanosized SiC reinforced magnesium and nanosized hybrid ((SiCAl2O3) reinforced magnesium materials is synthesized by using powder metallurgy route. It is observed that the monolithic and the reinforced magnesium materials have minimal porosity and the reinforced magnesium have well distributed nanosized SiC and SiCAl2O3 particles in the matrix.

Analysis, Composite materials, Thermal properties, Expansion (Heat), Thermal expansion, Mechanical properties, Magnesium, Magnesium (Metal)

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Influence of extra coarse grains on the creep properties of 9 percent CrMoV (P91) steel weldment

Article Abstract:

Creep tests were performed at 600 degrees Celsius for parent metal, weld metal, cross welds and simulated heat affected zone (HAZ) microstructures in order to study the influence of an extra coarse grain on the creep properties of P91. The creep strain behavior was analyzed using the Omega model where the log creep strain rate is linear in the creep strain.

Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Chromium, Molybdenum, Chromium (Metal), Properties

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