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首页> 美国政府科技报告 >Investigation of Processing Microstructures and Properties of Oxide Dispersion Strengthened Cobalt Alloy Extruded Shapes.
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Investigation of Processing Microstructures and Properties of Oxide Dispersion Strengthened Cobalt Alloy Extruded Shapes.

机译：氧化物弥散强化钴合金挤压形状加工组织与性能研究。

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The present study describes the development of an Oxide Dispersion Strengthened, Cobalt base alloy with the nominal composition of Co-20Ni-18Cr-4.5A1-1.75 Y2O3. The alloy was produced in extruded form from mechanically attrited powder. In the first part of this study a series of small scale (3in. dia.) extrusions were produced in order to evaluate various compositional and processing parameters. Based upon this study a single powder composition and three sets of extrusion parameters were chosen for use with full scale 7in. diameter extrusion billets. Dynamic (Mach 0.3), 2100 F oxidation tests showed the material to have excellent surface stability under these conditions, and hot corrosion testing at 1650 F showed it to be slightly superior to the analogous Ni base O.D.S. materials in this latter type of environment.

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