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Characterization Of Two Ods Alloys: 18cr Ods And 9cr Ods, Julianne Goddard Jan 2014

Characterization Of Two Ods Alloys: 18cr Ods And 9cr Ods, Julianne Goddard

Julianne Goddard

ODS alloys, or oxide dispersion strengthened alloys, are made from elemental or pre-alloyed metal powders mechanically alloyed with oxide powders in a high-energy attributor mill, and then consolidated by either hot isostatic pressing or hot extrusion causing the production of nanometer scale oxide and carbide particles within the alloy matrix; crystalline properties such as creep strength, ductility, corrosion resistance, tensile strength, swelling resistance, and resistance to embrittlement are all observed to be improved by the presence of nanoparticles in the matrix. The presented research uses various methods to observe and characterize the microstructural and microchemical properties of two experimental ODS ...